Inertial Sensor Algorithm to Estimate Walk Distance

The “total distance walked” obtained during a standardized walking test is an integral component of physical fitness and health status tracking in a range of consumer and clinical applications. Wearable inertial sensors offer the advantages of providing accurate, objective, and reliable measures of...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Sensors (Basel, Switzerland) Jg. 22; H. 3; S. 1077
Hauptverfasser: Shah, Vrutangkumar V., Curtze, Carolin, Sowalsky, Kristen, Arpan, Ishu, Mancini, Martina, Carlson-Kuhta, Patricia, El-Gohary, Mahmoud, Horak, Fay B., McNames, James
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Switzerland MDPI AG 29.01.2022
MDPI
Schlagworte:
ISSN:1424-8220, 1424-8220
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Abstract The “total distance walked” obtained during a standardized walking test is an integral component of physical fitness and health status tracking in a range of consumer and clinical applications. Wearable inertial sensors offer the advantages of providing accurate, objective, and reliable measures of gait while streamlining walk test administration. The aim of this study was to develop an inertial sensor-based algorithm to estimate the total distance walked using older subjects with impaired fasting glucose (Study I), and to test the generalizability of the proposed algorithm in patients with Multiple Sclerosis (Study II). All subjects wore two inertial sensors (Opals by Clario-APDM Wearable Technologies) on their feet. The walking distance algorithm was developed based on 108 older adults in Study I performing a 400 m walk test along a 20 m straight walkway. The validity of the algorithm was tested using a 6-minute walk test (6MWT) in two sub-studies of Study II with different lengths of a walkway, 15 m (Study II-A, n = 24) and 20 m (Study II-B, n = 22), respectively. The start and turn around points were marked with lines on the floor while smaller horizontal lines placed every 1 m served to calculate the manual distance walked (ground truth). The proposed algorithm calculates the forward distance traveled during each step as the change in the horizontal position from each foot-flat period to the subsequent foot-flat period. The total distance walked is then computed as the sum of walk distances for each stride, including turns. The proposed algorithm achieved an average absolute error rate of 1.92% with respect to a fixed 400 m distance for Study I. The same algorithm achieved an absolute error rate of 4.17% and 3.21% with respect to an averaged manual distance for 6MWT in Study II-A and Study II-B, respectively. These results demonstrate the potential of an inertial sensor-based algorithm to estimate a total distance walked with good accuracy with respect to the manual, clinical standard. Further work is needed to test the generalizability of the proposed algorithm with different administrators and populations, as well as larger diverse cohorts.
AbstractList The "total distance walked" obtained during a standardized walking test is an integral component of physical fitness and health status tracking in a range of consumer and clinical applications. Wearable inertial sensors offer the advantages of providing accurate, objective, and reliable measures of gait while streamlining walk test administration. The aim of this study was to develop an inertial sensor-based algorithm to estimate the total distance walked using older subjects with impaired fasting glucose (Study I), and to test the generalizability of the proposed algorithm in patients with Multiple Sclerosis (Study II). All subjects wore two inertial sensors (Opals by Clario-APDM Wearable Technologies) on their feet. The walking distance algorithm was developed based on 108 older adults in Study I performing a 400 m walk test along a 20 m straight walkway. The validity of the algorithm was tested using a 6-minute walk test (6MWT) in two sub-studies of Study II with different lengths of a walkway, 15 m (Study II-A, = 24) and 20 m (Study II-B, = 22), respectively. The start and turn around points were marked with lines on the floor while smaller horizontal lines placed every 1 m served to calculate the manual distance walked (ground truth). The proposed algorithm calculates the forward distance traveled during each step as the change in the horizontal position from each foot-flat period to the subsequent foot-flat period. The total distance walked is then computed as the sum of walk distances for each stride, including turns. The proposed algorithm achieved an average absolute error rate of 1.92% with respect to a fixed 400 m distance for Study I. The same algorithm achieved an absolute error rate of 4.17% and 3.21% with respect to an averaged manual distance for 6MWT in Study II-A and Study II-B, respectively. These results demonstrate the potential of an inertial sensor-based algorithm to estimate a total distance walked with good accuracy with respect to the manual, clinical standard. Further work is needed to test the generalizability of the proposed algorithm with different administrators and populations, as well as larger diverse cohorts.
The “total distance walked” obtained during a standardized walking test is an integral component of physical fitness and health status tracking in a range of consumer and clinical applications. Wearable inertial sensors offer the advantages of providing accurate, objective, and reliable measures of gait while streamlining walk test administration. The aim of this study was to develop an inertial sensor-based algorithm to estimate the total distance walked using older subjects with impaired fasting glucose (Study I), and to test the generalizability of the proposed algorithm in patients with Multiple Sclerosis (Study II). All subjects wore two inertial sensors (Opals by Clario-APDM Wearable Technologies) on their feet. The walking distance algorithm was developed based on 108 older adults in Study I performing a 400 m walk test along a 20 m straight walkway. The validity of the algorithm was tested using a 6-minute walk test (6MWT) in two sub-studies of Study II with different lengths of a walkway, 15 m (Study II-A, n = 24) and 20 m (Study II-B, n = 22), respectively. The start and turn around points were marked with lines on the floor while smaller horizontal lines placed every 1 m served to calculate the manual distance walked (ground truth). The proposed algorithm calculates the forward distance traveled during each step as the change in the horizontal position from each foot-flat period to the subsequent foot-flat period. The total distance walked is then computed as the sum of walk distances for each stride, including turns. The proposed algorithm achieved an average absolute error rate of 1.92% with respect to a fixed 400 m distance for Study I. The same algorithm achieved an absolute error rate of 4.17% and 3.21% with respect to an averaged manual distance for 6MWT in Study II-A and Study II-B, respectively. These results demonstrate the potential of an inertial sensor-based algorithm to estimate a total distance walked with good accuracy with respect to the manual, clinical standard. Further work is needed to test the generalizability of the proposed algorithm with different administrators and populations, as well as larger diverse cohorts.
The "total distance walked" obtained during a standardized walking test is an integral component of physical fitness and health status tracking in a range of consumer and clinical applications. Wearable inertial sensors offer the advantages of providing accurate, objective, and reliable measures of gait while streamlining walk test administration. The aim of this study was to develop an inertial sensor-based algorithm to estimate the total distance walked using older subjects with impaired fasting glucose (Study I), and to test the generalizability of the proposed algorithm in patients with Multiple Sclerosis (Study II). All subjects wore two inertial sensors (Opals by Clario-APDM Wearable Technologies) on their feet. The walking distance algorithm was developed based on 108 older adults in Study I performing a 400 m walk test along a 20 m straight walkway. The validity of the algorithm was tested using a 6-minute walk test (6MWT) in two sub-studies of Study II with different lengths of a walkway, 15 m (Study II-A, n = 24) and 20 m (Study II-B, n = 22), respectively. The start and turn around points were marked with lines on the floor while smaller horizontal lines placed every 1 m served to calculate the manual distance walked (ground truth). The proposed algorithm calculates the forward distance traveled during each step as the change in the horizontal position from each foot-flat period to the subsequent foot-flat period. The total distance walked is then computed as the sum of walk distances for each stride, including turns. The proposed algorithm achieved an average absolute error rate of 1.92% with respect to a fixed 400 m distance for Study I. The same algorithm achieved an absolute error rate of 4.17% and 3.21% with respect to an averaged manual distance for 6MWT in Study II-A and Study II-B, respectively. These results demonstrate the potential of an inertial sensor-based algorithm to estimate a total distance walked with good accuracy with respect to the manual, clinical standard. Further work is needed to test the generalizability of the proposed algorithm with different administrators and populations, as well as larger diverse cohorts.The "total distance walked" obtained during a standardized walking test is an integral component of physical fitness and health status tracking in a range of consumer and clinical applications. Wearable inertial sensors offer the advantages of providing accurate, objective, and reliable measures of gait while streamlining walk test administration. The aim of this study was to develop an inertial sensor-based algorithm to estimate the total distance walked using older subjects with impaired fasting glucose (Study I), and to test the generalizability of the proposed algorithm in patients with Multiple Sclerosis (Study II). All subjects wore two inertial sensors (Opals by Clario-APDM Wearable Technologies) on their feet. The walking distance algorithm was developed based on 108 older adults in Study I performing a 400 m walk test along a 20 m straight walkway. The validity of the algorithm was tested using a 6-minute walk test (6MWT) in two sub-studies of Study II with different lengths of a walkway, 15 m (Study II-A, n = 24) and 20 m (Study II-B, n = 22), respectively. The start and turn around points were marked with lines on the floor while smaller horizontal lines placed every 1 m served to calculate the manual distance walked (ground truth). The proposed algorithm calculates the forward distance traveled during each step as the change in the horizontal position from each foot-flat period to the subsequent foot-flat period. The total distance walked is then computed as the sum of walk distances for each stride, including turns. The proposed algorithm achieved an average absolute error rate of 1.92% with respect to a fixed 400 m distance for Study I. The same algorithm achieved an absolute error rate of 4.17% and 3.21% with respect to an averaged manual distance for 6MWT in Study II-A and Study II-B, respectively. These results demonstrate the potential of an inertial sensor-based algorithm to estimate a total distance walked with good accuracy with respect to the manual, clinical standard. Further work is needed to test the generalizability of the proposed algorithm with different administrators and populations, as well as larger diverse cohorts.
Author Shah, Vrutangkumar V.
Curtze, Carolin
Sowalsky, Kristen
Mancini, Martina
Carlson-Kuhta, Patricia
Horak, Fay B.
Arpan, Ishu
El-Gohary, Mahmoud
McNames, James
AuthorAffiliation 2 Department of Biomechanics, University of Nebraska at Omaha, 6001 Dodge St., Omaha, NE 68182, USA; ccurtze@unomaha.edu
4 Department of Electrical and Computer Engineering, Portland State University, 1825 SW Broadway, Portland, OR 97201, USA
1 Department of Neurology, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; arpan@ohsu.edu (I.A.); mancinim@ohsu.edu (M.M.); carlsonp@ohsu.edu (P.C.-K.); horakf@ohsu.edu (F.B.H.)
3 APDM Wearable Technologie—A Clario Company, 2828 S Corbett Ave, Ste 135, Portland, OR 97201, USA; kristen.sowalsky@ert.com (K.S.); mahmoud.el-gohary@ert.com (M.E.-G.); james.mcnames@ert.com (J.M.)
AuthorAffiliation_xml – name: 4 Department of Electrical and Computer Engineering, Portland State University, 1825 SW Broadway, Portland, OR 97201, USA
– name: 2 Department of Biomechanics, University of Nebraska at Omaha, 6001 Dodge St., Omaha, NE 68182, USA; ccurtze@unomaha.edu
– name: 3 APDM Wearable Technologie—A Clario Company, 2828 S Corbett Ave, Ste 135, Portland, OR 97201, USA; kristen.sowalsky@ert.com (K.S.); mahmoud.el-gohary@ert.com (M.E.-G.); james.mcnames@ert.com (J.M.)
– name: 1 Department of Neurology, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; arpan@ohsu.edu (I.A.); mancinim@ohsu.edu (M.M.); carlsonp@ohsu.edu (P.C.-K.); horakf@ohsu.edu (F.B.H.)
Author_xml – sequence: 1
  givenname: Vrutangkumar V.
  surname: Shah
  fullname: Shah, Vrutangkumar V.
– sequence: 2
  givenname: Carolin
  orcidid: 0000-0001-5394-4628
  surname: Curtze
  fullname: Curtze, Carolin
– sequence: 3
  givenname: Kristen
  surname: Sowalsky
  fullname: Sowalsky, Kristen
– sequence: 4
  givenname: Ishu
  surname: Arpan
  fullname: Arpan, Ishu
– sequence: 5
  givenname: Martina
  surname: Mancini
  fullname: Mancini, Martina
– sequence: 6
  givenname: Patricia
  orcidid: 0000-0002-5794-4155
  surname: Carlson-Kuhta
  fullname: Carlson-Kuhta, Patricia
– sequence: 7
  givenname: Mahmoud
  surname: El-Gohary
  fullname: El-Gohary, Mahmoud
– sequence: 8
  givenname: Fay B.
  orcidid: 0000-0001-7704-5459
  surname: Horak
  fullname: Horak, Fay B.
– sequence: 9
  givenname: James
  surname: McNames
  fullname: McNames, James
BackLink https://www.ncbi.nlm.nih.gov/pubmed/35161822$$D View this record in MEDLINE/PubMed
BookMark eNplkU1LXDEUhoNY_GoX_gG50E1dTE3uyc3HpiBW2wGhi7Z0GXJzkzHTTGKTTKH_3oyjonaVcM57nvNy3kO0G1O0CB0T_BFA4rPS9xgI5nwHHRDa05lohd1n_310WMoS4x4AxB7ah4Ew0hoHCObR5up16L7bWFLuzsMiZV9vVl1N3WWpfqWr7X7p8Lv77EvV0di36I3Todh3D-8R-nl1-ePi6-z625f5xfn1zFAm68z1jOjRDdZMhDHgfLC27YVp0IQAc8IJbpiTRHIjOYhJUwI9aDc4oaUc4QjNt9wp6aW6zc1K_qeS9uq-kPJC6ebdBKv45Cgf5UhGItpyJiQ1lBoxMSonoLixPm1Zt-txZSdjY806vIC-7ER_oxbprxICBMHQAB8eADn9WdtS1coXY0PQ0aZ1UT3rJWbtvKxJ37-SLtM6x3aqjYoLaPZIU508d_Rk5TGbJjjbCkxOpWTrlPFVV582Bn1QBKtN-uop_TZx-mriEfq_9g4ZMavg
CitedBy_id crossref_primary_10_1016_j_gaitpost_2024_01_030
crossref_primary_10_3390_s24082632
crossref_primary_10_1016_j_jbiomech_2023_111907
crossref_primary_10_1186_s12984_024_01409_7
crossref_primary_10_1080_14796678_2025_2457881
crossref_primary_10_3390_s23084091
crossref_primary_10_3390_s24051480
crossref_primary_10_1016_j_heliyon_2023_e17854
crossref_primary_10_2196_44428
Cites_doi 10.2196/13756
10.1109/MeMeA49120.2020.9137305
10.1002/mds.26718
10.1586/17434440.2016.1153421
10.1183/09031936.00071506
10.1111/j.1532-5415.2006.00701.x
10.1016/S1474-4422(19)30397-7
10.1016/S0140-6736(86)90837-8
10.1186/s12984-015-0013-9
10.1007/s00415-020-09696-5
10.1557/s43577-021-00123-2
10.1093/eurheartj/ehi162
10.1016/j.gaitpost.2016.04.025
10.1109/TBME.2006.875664
10.3810/psm.2011.05.1904
10.1093/qjmed/hch084
10.1519/00139143-200932020-00002
10.1038/s41746-020-0299-2
10.1164/ajrccm.158.5.9710086
10.1212/WNL.43.2.268
10.1164/ajrccm.166.1.at1102
10.1038/s41746-018-0073-x
10.1109/MCG.2005.140
10.1109/MPRV.2012.16
10.1089/tmj.2014.0025
10.1088/1361-6579/ab4023
10.3390/s20092660
10.1016/S1474-4422(06)70678-0
10.2196/10527
10.1109/JBHI.2015.2427511
10.1001/jamaneurol.2018.0809
10.1249/01.MSS.0000089342.96098.C4
10.1136/thx.39.11.818
10.1177/1352458507082607
10.1037/0033-2909.86.2.420
10.1016/j.jsams.2013.10.241
10.1249/01.MSS.0000078932.61440.A2
10.1016/j.gaitpost.2017.04.013
10.1161/CIRCHEARTFAILURE.115.002062
10.1136/bmj.284.6329.1607
10.1016/j.jdiacomp.2015.10.006
10.1016/j.amjmed.2017.11.051
10.1183/09031936.00150314
ContentType Journal Article
Copyright 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
2022 by the authors. 2022
Copyright_xml – notice: 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
– notice: 2022 by the authors. 2022
DBID AAYXX
CITATION
CGR
CUY
CVF
ECM
EIF
NPM
3V.
7X7
7XB
88E
8FI
8FJ
8FK
ABUWG
AFKRA
AZQEC
BENPR
CCPQU
DWQXO
FYUFA
GHDGH
K9.
M0S
M1P
PHGZM
PHGZT
PIMPY
PJZUB
PKEHL
PPXIY
PQEST
PQQKQ
PQUKI
PRINS
7X8
5PM
DOA
DOI 10.3390/s22031077
DatabaseName CrossRef
Medline
MEDLINE
MEDLINE (Ovid)
MEDLINE
MEDLINE
PubMed
ProQuest Central (Corporate)
ProQuest Health & Medical Collection
ProQuest Central (purchase pre-March 2016)
Medical Database (Alumni Edition)
Hospital Premium Collection
Hospital Premium Collection (Alumni Edition)
ProQuest Central (Alumni) (purchase pre-March 2016)
ProQuest Central (Alumni)
ProQuest Central UK/Ireland
ProQuest Central Essentials
ProQuest Central
ProQuest One Community College
ProQuest Central
Health Research Premium Collection
Health Research Premium Collection (Alumni)
ProQuest Health & Medical Complete (Alumni)
Health & Medical Collection (Alumni Edition)
PML(ProQuest Medical Library)
ProQuest Central Premium
ProQuest One Academic (New)
Publicly Available Content Database
ProQuest Health & Medical Research Collection
ProQuest One Academic Middle East (New)
One Health & Nursing
ProQuest One Academic Eastern Edition (DO NOT USE)
ProQuest One Academic (retired)
ProQuest One Academic UKI Edition
ProQuest Central China
MEDLINE - Academic
PubMed Central (Full Participant titles)
DOAJ Directory of Open Access Journals
DatabaseTitle CrossRef
MEDLINE
Medline Complete
MEDLINE with Full Text
PubMed
MEDLINE (Ovid)
Publicly Available Content Database
ProQuest One Academic Middle East (New)
ProQuest Central Essentials
ProQuest Health & Medical Complete (Alumni)
ProQuest Central (Alumni Edition)
ProQuest One Community College
ProQuest One Health & Nursing
ProQuest Central China
ProQuest Central
ProQuest Health & Medical Research Collection
Health Research Premium Collection
Health and Medicine Complete (Alumni Edition)
ProQuest Central Korea
Health & Medical Research Collection
ProQuest Central (New)
ProQuest Medical Library (Alumni)
ProQuest One Academic Eastern Edition
ProQuest Hospital Collection
Health Research Premium Collection (Alumni)
ProQuest Hospital Collection (Alumni)
ProQuest Health & Medical Complete
ProQuest Medical Library
ProQuest One Academic UKI Edition
ProQuest One Academic
ProQuest One Academic (New)
ProQuest Central (Alumni)
MEDLINE - Academic
DatabaseTitleList MEDLINE
Publicly Available Content Database
MEDLINE - Academic

CrossRef

Database_xml – sequence: 1
  dbid: DOA
  name: DOAJ Directory of Open Access Journals
  url: https://www.doaj.org/
  sourceTypes: Open Website
– sequence: 2
  dbid: NPM
  name: PubMed
  url: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed
  sourceTypes: Index Database
– sequence: 3
  dbid: PIMPY
  name: Publicly Available Content Database
  url: http://search.proquest.com/publiccontent
  sourceTypes: Aggregation Database
DeliveryMethod fulltext_linktorsrc
Discipline Engineering
EISSN 1424-8220
ExternalDocumentID oai_doaj_org_article_7df47b9b1b184696894c44c8d649d340
PMC8838103
35161822
10_3390_s22031077
Genre Journal Article
GeographicLocations Oregon
United States--US
GeographicLocations_xml – name: United States--US
– name: Oregon
GrantInformation_xml – fundername: Medical Research Foundation
  grantid: N/A
– fundername: Collins Medical Trust
  grantid: N/A
– fundername: United States Department of Defense
  grantid: MS170133
– fundername: NIH HHS
  grantid: 5IK2CX000729
GroupedDBID ---
123
2WC
53G
5VS
7X7
88E
8FE
8FG
8FI
8FJ
AADQD
AAHBH
AAYXX
ABDBF
ABUWG
ACUHS
ADBBV
ADMLS
AENEX
AFFHD
AFKRA
AFZYC
ALMA_UNASSIGNED_HOLDINGS
BENPR
BPHCQ
BVXVI
CCPQU
CITATION
CS3
D1I
DU5
E3Z
EBD
ESX
F5P
FYUFA
GROUPED_DOAJ
GX1
HH5
HMCUK
HYE
IAO
ITC
KQ8
L6V
M1P
M48
MODMG
M~E
OK1
OVT
P2P
P62
PHGZM
PHGZT
PIMPY
PJZUB
PPXIY
PQQKQ
PROAC
PSQYO
RNS
RPM
TUS
UKHRP
XSB
~8M
ALIPV
CGR
CUY
CVF
ECM
EIF
NPM
3V.
7XB
8FK
AZQEC
DWQXO
K9.
PKEHL
PQEST
PQUKI
PRINS
7X8
PUEGO
5PM
ID FETCH-LOGICAL-c469t-f261abf5ecd1663775ee5163d5a1136f8f87c6f9197c9738da41323af5f8a99b3
IEDL.DBID 7X7
ISICitedReferencesCount 9
ISICitedReferencesURI http://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=Summon&SrcAuth=ProQuest&DestLinkType=CitingArticles&DestApp=WOS_CPL&KeyUT=000920100600017&url=https%3A%2F%2Fcvtisr.summon.serialssolutions.com%2F%23%21%2Fsearch%3Fho%3Df%26include.ft.matches%3Dt%26l%3Dnull%26q%3D
ISSN 1424-8220
IngestDate Fri Oct 03 12:52:02 EDT 2025
Tue Nov 04 01:58:39 EST 2025
Thu Sep 04 18:56:41 EDT 2025
Tue Oct 07 07:15:06 EDT 2025
Thu Apr 03 06:56:52 EDT 2025
Tue Nov 18 22:16:51 EST 2025
Sat Nov 29 07:18:06 EST 2025
IsDoiOpenAccess true
IsOpenAccess true
IsPeerReviewed true
IsScholarly true
Issue 3
Keywords inertial sensors
6MWD
6MWT
400 m walk test
neurological disorders
Language English
License Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
LinkModel DirectLink
MergedId FETCHMERGED-LOGICAL-c469t-f261abf5ecd1663775ee5163d5a1136f8f87c6f9197c9738da41323af5f8a99b3
Notes ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ORCID 0000-0001-5394-4628
0000-0001-7704-5459
0000-0002-5794-4155
OpenAccessLink https://www.proquest.com/docview/2627836891?pq-origsite=%requestingapplication%
PMID 35161822
PQID 2627836891
PQPubID 2032333
ParticipantIDs doaj_primary_oai_doaj_org_article_7df47b9b1b184696894c44c8d649d340
pubmedcentral_primary_oai_pubmedcentral_nih_gov_8838103
proquest_miscellaneous_2629063386
proquest_journals_2627836891
pubmed_primary_35161822
crossref_citationtrail_10_3390_s22031077
crossref_primary_10_3390_s22031077
PublicationCentury 2000
PublicationDate 20220129
PublicationDateYYYYMMDD 2022-01-29
PublicationDate_xml – month: 1
  year: 2022
  text: 20220129
  day: 29
PublicationDecade 2020
PublicationPlace Switzerland
PublicationPlace_xml – name: Switzerland
– name: Basel
PublicationTitle Sensors (Basel, Switzerland)
PublicationTitleAlternate Sensors (Basel)
PublicationYear 2022
Publisher MDPI AG
MDPI
Publisher_xml – name: MDPI AG
– name: MDPI
References Washabaugh (ref_38) 2017; 55
Nutt (ref_1) 1993; 43
Takacs (ref_29) 2014; 17
Burr (ref_7) 2011; 39
Sabatini (ref_41) 2006; 53
Juen (ref_34) 2015; 19
Zhan (ref_22) 2018; 75
Bland (ref_46) 1986; 327
Juen (ref_35) 2014; 20
Shrout (ref_47) 1979; 86
Maksimovic (ref_36) 2015; 30
Olsson (ref_6) 2005; 26
Casanova (ref_11) 2007; 29
Schneider (ref_30) 2003; 35
Guyatt (ref_10) 1984; 39
Godfrey (ref_18) 2016; 31
Butland (ref_14) 1982; 284
Schubert (ref_26) 2020; 3
Feehan (ref_32) 2018; 6
Crouter (ref_31) 2003; 35
Fritz (ref_4) 2009; 32
Pearson (ref_16) 2004; 97
Ata (ref_33) 2018; 1
Holland (ref_8) 2014; 44
ref_23
ref_45
ref_44
Warmerdam (ref_15) 2020; 19
Fischer (ref_42) 2013; 12
ref_43
Capela (ref_25) 2015; 12
Salvi (ref_27) 2020; 8
Huang (ref_24) 2016; 48
Snijders (ref_2) 2007; 6
Mancini (ref_17) 2016; 13
Yang (ref_20) 2021; 12
Goldman (ref_37) 2008; 14
Perera (ref_12) 2006; 54
Shah (ref_19) 2020; 267
Baker (ref_3) 2018; 131
Foxlin (ref_40) 2005; 25
Dong (ref_21) 2021; 46
ref_5
Guyatt (ref_13) 1985; 132
Brooks (ref_28) 2015; 8
Enright (ref_9) 1998; 158
Morris (ref_39) 2019; 40
References_xml – volume: 8
  start-page: e13756
  year: 2020
  ident: ref_27
  article-title: The mobile-based 6-minute walk test: Usability study and algorithm development and validation
  publication-title: JMIR mHealth uHealth
  doi: 10.2196/13756
– ident: ref_45
  doi: 10.1109/MeMeA49120.2020.9137305
– volume: 31
  start-page: 1293
  year: 2016
  ident: ref_18
  article-title: Free-living monitoring of Parkinson’s disease: Lessons from the field
  publication-title: Mov. Disord.
  doi: 10.1002/mds.26718
– volume: 13
  start-page: 455
  year: 2016
  ident: ref_17
  article-title: Potential of APDM mobility lab for the monitoring of the progression of Parkinson’s disease
  publication-title: Expert Rev. Med. Devices
  doi: 10.1586/17434440.2016.1153421
– volume: 29
  start-page: 535
  year: 2007
  ident: ref_11
  article-title: The 6-min walking distance: Long term follow up in patients with COPD
  publication-title: Eur. Respir. J.
  doi: 10.1183/09031936.00071506
– volume: 54
  start-page: 743
  year: 2006
  ident: ref_12
  article-title: Meaningful change and responsiveness in common physical performance measures in older adults
  publication-title: J. Am. Geriatr. Soc.
  doi: 10.1111/j.1532-5415.2006.00701.x
– volume: 19
  start-page: 462
  year: 2020
  ident: ref_15
  article-title: Long-term unsupervised mobility assessment in movement disorders
  publication-title: Lancet Neurol.
  doi: 10.1016/S1474-4422(19)30397-7
– volume: 327
  start-page: 307
  year: 1986
  ident: ref_46
  article-title: Statistical methods for assessing agreement between two methods of clinical measurement
  publication-title: Lancet
  doi: 10.1016/S0140-6736(86)90837-8
– volume: 12
  start-page: 19
  year: 2015
  ident: ref_25
  article-title: Novel algorithm for a smartphone-based 6-minute walk test application: Algorithm, application development, and evaluation
  publication-title: J. Neuroeng. Rehabil.
  doi: 10.1186/s12984-015-0013-9
– volume: 267
  start-page: 1188
  year: 2020
  ident: ref_19
  article-title: Quantity and quality of gait and turning in people with multiple sclerosis, Parkinson’s disease and matched controls during daily living
  publication-title: J. Neurol.
  doi: 10.1007/s00415-020-09696-5
– volume: 46
  start-page: 512
  year: 2021
  ident: ref_21
  article-title: Smart textile triboelectric nanogenerators: Current status and perspectives
  publication-title: MRS Bull.
  doi: 10.1557/s43577-021-00123-2
– volume: 26
  start-page: 778
  year: 2005
  ident: ref_6
  article-title: Six minute corridor walk test as an outcome measure for the assessment of treatment in randomized, blinded intervention trials of chronic heart failure: A systematic review
  publication-title: Eur. Heart J.
  doi: 10.1093/eurheartj/ehi162
– volume: 48
  start-page: 36
  year: 2016
  ident: ref_24
  article-title: Validity of FitBit, Jawbone UP, Nike+ and other wearable devices for level and stair walking
  publication-title: Gait Posture
  doi: 10.1016/j.gaitpost.2016.04.025
– volume: 53
  start-page: 1346
  year: 2006
  ident: ref_41
  article-title: Quaternion-based extended Kalman filter for determining orientation by inertial and magnetic sensing
  publication-title: IEEE Trans. Biomed. Eng.
  doi: 10.1109/TBME.2006.875664
– volume: 39
  start-page: 133
  year: 2011
  ident: ref_7
  article-title: The 6-min walk test as a predictor of objectively measured aerobic fitness in healthy working-aged adults
  publication-title: Phys. Sportsmed.
  doi: 10.3810/psm.2011.05.1904
– volume: 97
  start-page: 463
  year: 2004
  ident: ref_16
  article-title: Quantification of walking mobility in neurological disorders
  publication-title: QJM
  doi: 10.1093/qjmed/hch084
– ident: ref_44
– volume: 32
  start-page: 2
  year: 2009
  ident: ref_4
  article-title: White Paper: “Walking Speed: The Sixth Vital Sign”
  publication-title: J. Geriatr. Phys. Ther.
  doi: 10.1519/00139143-200932020-00002
– volume: 3
  start-page: 92
  year: 2020
  ident: ref_26
  article-title: Wearable devices can predict the outcome of standardized 6-minute walk tests in heart disease
  publication-title: NPJ Digit. Med.
  doi: 10.1038/s41746-020-0299-2
– volume: 158
  start-page: 1384
  year: 1998
  ident: ref_9
  article-title: Reference equations for the six-minute walk in healthy adults
  publication-title: Am. J. Respir. Crit. Care Med.
  doi: 10.1164/ajrccm.158.5.9710086
– volume: 43
  start-page: 268
  year: 1993
  ident: ref_1
  article-title: Human walking and higher-level gait disorders, particularly in the elderly
  publication-title: Neurology
  doi: 10.1212/WNL.43.2.268
– ident: ref_5
  doi: 10.1164/ajrccm.166.1.at1102
– volume: 1
  start-page: 66
  year: 2018
  ident: ref_33
  article-title: Clinical validation of smartphone-based activity tracking in peripheral artery disease patients
  publication-title: NPJ Digit. Med.
  doi: 10.1038/s41746-018-0073-x
– volume: 25
  start-page: 38
  year: 2005
  ident: ref_40
  article-title: Pedestrian tracking with shoe-mounted inertial sensors
  publication-title: IEEE Comput. Graph. Appl.
  doi: 10.1109/MCG.2005.140
– volume: 12
  start-page: 17
  year: 2013
  ident: ref_42
  article-title: Tutorial: Implementing a pedestrian tracker using inertial sensors
  publication-title: IEEE Pervasive Comput.
  doi: 10.1109/MPRV.2012.16
– volume: 20
  start-page: 1035
  year: 2014
  ident: ref_35
  article-title: Health monitors for chronic disease by gait analysis with mobile phones
  publication-title: Telemed. E-Health
  doi: 10.1089/tmj.2014.0025
– volume: 40
  start-page: 095003
  year: 2019
  ident: ref_39
  article-title: Validity of Mobility Lab (version 2) for gait assessment in young adults, older adults and Parkinson’s disease
  publication-title: Physiol. Meas.
  doi: 10.1088/1361-6579/ab4023
– ident: ref_23
  doi: 10.3390/s20092660
– volume: 6
  start-page: 63
  year: 2007
  ident: ref_2
  article-title: Neurological gait disorders in elderly people: Clinical approach and classification
  publication-title: Lancet Neurol.
  doi: 10.1016/S1474-4422(06)70678-0
– volume: 132
  start-page: 919
  year: 1985
  ident: ref_13
  article-title: The 6-min walk: A new measure of exercise capacity in patients with chronic heart failure sur sa capacite dans les activites de la vie quotidienne. colleagues’0 introduced the 12-min walking test, in
  publication-title: Can. Med. Assoc. J.
– volume: 6
  start-page: e10527
  year: 2018
  ident: ref_32
  article-title: Accuracy of Fitbit Devices: Systematic Review and Narrative Syntheses of Quantitative Data
  publication-title: JMIR mHealth uHealth
  doi: 10.2196/10527
– volume: 19
  start-page: 1399
  year: 2015
  ident: ref_34
  article-title: A Natural Walking Monitor for Pulmonary Patients Using Mobile Phones
  publication-title: IEEE J. Biomed. Health Inform.
  doi: 10.1109/JBHI.2015.2427511
– volume: 75
  start-page: 876
  year: 2018
  ident: ref_22
  article-title: Using smartphones and machine learning to quantify Parkinson disease severity the mobile Parkinson disease score
  publication-title: JAMA Neurol.
  doi: 10.1001/jamaneurol.2018.0809
– volume: 35
  start-page: 1779
  year: 2003
  ident: ref_30
  article-title: Accuracy and reliability of 10 pedometers for measuring steps over a 400-m walk
  publication-title: Med. Sci. Sports Exerc.
  doi: 10.1249/01.MSS.0000089342.96098.C4
– volume: 39
  start-page: 818
  year: 1984
  ident: ref_10
  article-title: Effect of encouragement on walking test performance
  publication-title: Thorax
  doi: 10.1136/thx.39.11.818
– volume: 14
  start-page: 383
  year: 2008
  ident: ref_37
  article-title: Evaluation of the six-minute walk in multiple sclerosis subjects and healthy controls
  publication-title: Mult. Scler. J.
  doi: 10.1177/1352458507082607
– volume: 86
  start-page: 420
  year: 1979
  ident: ref_47
  article-title: Intraclass Correlations: Uses in Assessing Rater Reliability
  publication-title: Psychol. Bull.
  doi: 10.1037/0033-2909.86.2.420
– volume: 12
  start-page: 1
  year: 2021
  ident: ref_20
  article-title: A non-printed integrated-circuit textile for wireless theranostics
  publication-title: Nat. Commun.
– volume: 17
  start-page: 496
  year: 2014
  ident: ref_29
  article-title: Validation of the Fitbit One activity monitor device during treadmill walking
  publication-title: J. Sci. Med. Sport
  doi: 10.1016/j.jsams.2013.10.241
– volume: 35
  start-page: 1455
  year: 2003
  ident: ref_31
  article-title: Validity of 10 electronic pedometers for measuring steps, distance, and energy cost
  publication-title: Med. Sci. Sports Exerc.
  doi: 10.1249/01.MSS.0000078932.61440.A2
– volume: 55
  start-page: 87
  year: 2017
  ident: ref_38
  article-title: Validity and repeatability of inertial measurement units for measuring gait parameters
  publication-title: Gait Posture
  doi: 10.1016/j.gaitpost.2017.04.013
– volume: 8
  start-page: 905
  year: 2015
  ident: ref_28
  article-title: Accuracy and Usability of a Self-Administered 6-Min Walk Test Smartphone Application
  publication-title: Circ. Heart Fail.
  doi: 10.1161/CIRCHEARTFAILURE.115.002062
– ident: ref_43
– volume: 284
  start-page: 1607
  year: 1982
  ident: ref_14
  article-title: Two-, six-, and 12-min walking tests in respiratory disease
  publication-title: Br. Med. J.
  doi: 10.1136/bmj.284.6329.1607
– volume: 30
  start-page: 61
  year: 2015
  ident: ref_36
  article-title: Gait characteristics in older adults with diabetes and impaired fasting glucose: The Rotterdam Study
  publication-title: J. Diabetes Its Complicat.
  doi: 10.1016/j.jdiacomp.2015.10.006
– volume: 131
  start-page: 602
  year: 2018
  ident: ref_3
  article-title: Gait Disorders
  publication-title: Am. J. Med.
  doi: 10.1016/j.amjmed.2017.11.051
– volume: 44
  start-page: 1428
  year: 2014
  ident: ref_8
  article-title: An official European respiratory society/American thoracic society technical standard: Field walking tests in chronic respiratory disease
  publication-title: Eur. Respir. J.
  doi: 10.1183/09031936.00150314
SSID ssj0023338
Score 2.4101708
Snippet The “total distance walked” obtained during a standardized walking test is an integral component of physical fitness and health status tracking in a range of...
The "total distance walked" obtained during a standardized walking test is an integral component of physical fitness and health status tracking in a range of...
SourceID doaj
pubmedcentral
proquest
pubmed
crossref
SourceType Open Website
Open Access Repository
Aggregation Database
Index Database
Enrichment Source
StartPage 1077
SubjectTerms 400 m walk test
6MWD
6MWT
Aged
Algorithms
Clinical trials
Consent
Data collection
Datasets
Diabetes
Disease
Fasting
Foot
Gait
Glucose
Heart failure
Humans
inertial sensors
Multiple sclerosis
Neurological disorders
Older people
Sensors
Walk Test
Walking
Walkways
SummonAdditionalLinks – databaseName: DOAJ Directory of Open Access Journals
  dbid: DOA
  link: http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwrV1La9wwEB5C6CE9lLZJW6dJcUIOvZjEkqzHMU8aCCHQV25GzyZ0a4fdTX9_Z2yv2S2BXnq1BjyaT0Lfh-VvAA6s8FpG5woenCiETqLQnvlCSFwxTJWJdY43367U9bW-vTU3S62-6E5Ybw_cF-5QhSSUM650qEXIycUIL_AFQQoTuOjU-pEyCzE1SC2Oyqv3EeIo6g9njJEFplIrp09n0v8Us_z7guTSiXPxEl4MVDE_7lN8BWuxeQ3PlwwEN4FfNnQvGqM-oxxtp_nx5EeLcv_uVz5v83PcvkhIY_7dTn7mZ8QUEeIt-Hpx_uX0UzG0QSg8TnheJBQ51qUq-lAiP1CqirFCGhUqSw1Zkk5aeZlMaZQ3iutg8WBi3KYqaWuM429gvWmb-A5yGbXUZCAvnSKXFquEr2JIPgZLPb4z-LgoT-0Hj3BqVTGpUStQJeuxkhnsj6EPvTHGU0EnVOMxgLysuweIcD0gXP8L4Qx2FgjVwwab1UxSixCMxZz3xmHcGvS9wzaxfexiDDIwrmUGb3tAx0x4RZ0CGMtArUC9kurqSHN_19lva02uaHz7f8ztPWww-p_iqCyY2YH1-fQx7sIz_3t-P5t-6Nb0H9Tj-cQ
  priority: 102
  providerName: Directory of Open Access Journals
Title Inertial Sensor Algorithm to Estimate Walk Distance
URI https://www.ncbi.nlm.nih.gov/pubmed/35161822
https://www.proquest.com/docview/2627836891
https://www.proquest.com/docview/2629063386
https://pubmed.ncbi.nlm.nih.gov/PMC8838103
https://doaj.org/article/7df47b9b1b184696894c44c8d649d340
Volume 22
WOSCitedRecordID wos000920100600017&url=https%3A%2F%2Fcvtisr.summon.serialssolutions.com%2F%23%21%2Fsearch%3Fho%3Df%26include.ft.matches%3Dt%26l%3Dnull%26q%3D
hasFullText 1
inHoldings 1
isFullTextHit
isPrint
journalDatabaseRights – providerCode: PRVAON
  databaseName: DOAJ Directory of Open Access Journals
  customDbUrl:
  eissn: 1424-8220
  dateEnd: 99991231
  omitProxy: false
  ssIdentifier: ssj0023338
  issn: 1424-8220
  databaseCode: DOA
  dateStart: 20010101
  isFulltext: true
  titleUrlDefault: https://www.doaj.org/
  providerName: Directory of Open Access Journals
– providerCode: PRVHPJ
  databaseName: ROAD: Directory of Open Access Scholarly Resources
  customDbUrl:
  eissn: 1424-8220
  dateEnd: 99991231
  omitProxy: false
  ssIdentifier: ssj0023338
  issn: 1424-8220
  databaseCode: M~E
  dateStart: 20010101
  isFulltext: true
  titleUrlDefault: https://road.issn.org
  providerName: ISSN International Centre
– providerCode: PRVPQU
  databaseName: ProQuest Central
  customDbUrl:
  eissn: 1424-8220
  dateEnd: 99991231
  omitProxy: false
  ssIdentifier: ssj0023338
  issn: 1424-8220
  databaseCode: BENPR
  dateStart: 20010101
  isFulltext: true
  titleUrlDefault: https://www.proquest.com/central
  providerName: ProQuest
– providerCode: PRVPQU
  databaseName: ProQuest Health & Medical Collection
  customDbUrl:
  eissn: 1424-8220
  dateEnd: 99991231
  omitProxy: false
  ssIdentifier: ssj0023338
  issn: 1424-8220
  databaseCode: 7X7
  dateStart: 20010101
  isFulltext: true
  titleUrlDefault: https://search.proquest.com/healthcomplete
  providerName: ProQuest
– providerCode: PRVPQU
  databaseName: Publicly Available Content Database
  customDbUrl:
  eissn: 1424-8220
  dateEnd: 99991231
  omitProxy: false
  ssIdentifier: ssj0023338
  issn: 1424-8220
  databaseCode: PIMPY
  dateStart: 20010101
  isFulltext: true
  titleUrlDefault: http://search.proquest.com/publiccontent
  providerName: ProQuest
link http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwpV1Lb9QwEB5BywEOvAuBsgqIA5eoje34cUItbEUlulrxXE6R40dbsSRlN-XIb2cmm912UcWFSw72KBplxvZ8tvN9AC-tcFqGqsq4r0QmdBSZdsxlQmLGMJVH1jHefHmvRiM9mZhxv-E2769VLufEbqL2jaM98h0mSRNCapO_PvuZkWoUna72EhrXYZNksynP1eQCcHHEXws2IY7QfmfOGBFhKrW2BnVU_VfVl39fk7y07hzc-V-P78LtvuJM9xYpcg-uhfo-3LrEQ_gA-GFN16vR6iOi2maW7k2P8U3tyY-0bdIhzgJY14b0q51-T99SwYmZ8hA-Hww_vXmX9WoKmUMI3GYRsZKtYhGcz7HMUKoIocBqzBeWdF2ijlo5GU1ulDOKa29xfWPcxiJqa0zFt2CjburwGFIZtNTEQy8rRWQvVglXBB9d8JakwhN4tfy-peupxknxYloi5KBQlKtQJPBiZXq24Ne4ymifgrQyIErsrqGZHZf9CCuVj0JVpsorBK1E-WOEE5iJXgrjudhNYHsZprIfp_PyIkYJPF914wijYxNbh-a8szFYyHEtE3i0yIiVJ7wgwQHGElBrubLm6npPfXrSsXhrTeRq_Mm_3XoKNxn9cLGbZ8xsw0Y7Ow_P4Ib71Z7OZ4Mu3bunHsDm_nA0_jDodhXwefR7iG3jw6Pxtz_66A8e
linkProvider ProQuest
linkToHtml http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMw1V1Nb9QwEB2VLRLlwHchUCAgkLhE3dhObB8QKrRVV92uVqLQcgqJY7cVS1J2UxB_it_ITJINXVRx64FrPIpG8ZvxTGy_B_AiFUbFNssCnmciEMqJQBlmAhEjYpgMHasZbz4O5WikDg_1eAl-ze_C0LHKeU6sE3VeGvpHvs5i0oSIlQ7fnH4LSDWKdlfnEhoNLHbtzx_Yss1eDzZxfl8ytr21_24naFUFAoOtYBU47BnSzEXW5CEut1JG1kZYleRRSvomTjklTex0qKXRkqs8xTzPeOoip1KtM47vvQLLAsHe78HyeLA3_tS1eBw7voa_iHPdX58xRtSbUi6serU4wEUV7d8HM8-tdNs3_7dvdAtutDW1v9EEwW1YssUduH6OafEu8EFBB8jR6j327eXU35gcoefV8Ve_Kv0tzHNYuVv_IJ188TeppMZYuAcfLsXrVegVZWEfgB9bFSti2o8zSXQ2qRQmsrkzNk9JDN2DV_P5TExLpk6aHpMEmyqa-qSbeg-ed6anDYPIRUZvCRSdAZF-1w_K6VHS5pBE5k7ITGdhhm05kRppYQTGWh4LnXPR92BtDoukzUSz5A8mPHjWDWMOoY2htLDlWW2jsVTlKvbgfoPAzhMekaQCYx7IBWwuuLo4Upwc1zzlShF9HH_4b7eewrWd_b1hMhyMdh_BCqPrJf0wYHoNetX0zD6Gq-Z7dTKbPmmDzYfPl43d39rPZtM
linkToPdf http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMw1V1Nb9QwEB2VLULlwDclUCAgkLhEu7Gd2D4gVNiuWLWsVuKrnELi2G3FkpTdFMRf49cxk2RDF1XceuAaj6JR_DyeicfvATxJhVGxzbKA55kIhHIiUIaZQMSIGCZDx2rGmw97cjJR-_t6uga_lndhqK1yGRPrQJ2Xhv6R91lMmhCx0mHftW0R0-HoxfG3gBSk6KR1KafRQGTX_vyB5dvi-XiIc_2UsdHOu1evg1ZhIDBYFlaBw_ohzVxkTR7i1itlZG2EGUoepaR14pRT0sROh1oaLbnKU4z5jKcucirVOuP43guwLkm_twfr0_Gb6aeu3ONY_TVcRpzrQX_BGNFwSrmyA9ZCAWdlt383aZ7a9UZX_-fvdQ2utLm2v90sjuuwZosbcPkUA-NN4OOCGsvR6i3W8-Xc354doOfV4Ve_Kv0djH-Y0Vv_Yzr74g8p1cY1cgven4vXt6FXlIW9A35sVayIgT_OJNHcpFKYyObO2DwlkXQPni3nNjEtyTppfcwSLLYIBkkHAw8ed6bHDbPIWUYvCSCdAZGB1w_K-UHSxpZE5k7ITGdhhuU6kR1pYQSuwTwWOudi4MHWEiJJG6EWyR98ePCoG8bYQgdGaWHLk9pGYwrLVezBZoPGzhMekdQCYx7IFZyuuLo6Uhwd1vzlShGtHL_7b7cewiUEbLI3nuzegw1Gt04GYcD0FvSq-Ym9DxfN9-poMX_QrjsfPp83dH8DIx9vnA
openUrl ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Inertial+Sensor+Algorithm+to+Estimate+Walk+Distance&rft.jtitle=Sensors+%28Basel%2C+Switzerland%29&rft.au=Shah%2C+Vrutangkumar+V.&rft.au=Curtze%2C+Carolin&rft.au=Sowalsky%2C+Kristen&rft.au=Arpan%2C+Ishu&rft.date=2022-01-29&rft.issn=1424-8220&rft.eissn=1424-8220&rft.volume=22&rft.issue=3&rft.spage=1077&rft_id=info:doi/10.3390%2Fs22031077&rft.externalDBID=n%2Fa&rft.externalDocID=10_3390_s22031077
thumbnail_l http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=1424-8220&client=summon
thumbnail_m http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=1424-8220&client=summon
thumbnail_s http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=1424-8220&client=summon