Tracking of cardiorespiratory fitness in Japanese men

The stability of the relative order of cardiorespiratory fitness (CRF) during adulthood has not been sufficiently investigated. This study investigated the tracking of CRF over a 7-year follow-up period in Japanese male adults aged 18-53 years. A total of 3,718 male workers who underwent three subma...

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Published in:The journal of physical fitness and sports medicine Vol. 7; no. 1; pp. 25 - 33
Main Authors: Naofumi Yamamoto, Susumu S. Sawada, I-Min Lee, Yuko Gando, Ryoko Kawakami, Haruka Murakami, Motohiko Miyachi, Yutaka Yoshitake, Hidenori Asai, Takashi Okamoto, Koji Tsukamoto, Hiroaki Tanaka, Steven N. Blair
Format: Journal Article
Language:English
Published: Japanese Society of Physical Fitness and Sports Medicine 01.01.2018
Subjects:
cohort study
physical activity
regression dilution bias
stability
ISSN:2186-8131, 2186-8123
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Abstract The stability of the relative order of cardiorespiratory fitness (CRF) during adulthood has not been sufficiently investigated. This study investigated the tracking of CRF over a 7-year follow-up period in Japanese male adults aged 18-53 years. A total of 3,718 male workers who underwent three submaximal exercise tests (a first test and again 3 and 7 years later for a second and third test) were included. CRF was defined as the maximal oxygen uptake estimated from a submaximal exercise test using a cycle ergometer. Spearman correlation coefficients for CRF in the first and second tests, the second and third tests and the first and third tests were 0.61, 0.62 and 0.54, respectively. A moderate kappa coefficient, indicating the degree of agreement for quartiles, was obtained for all follow-up periods (kappa coefficient = 0.43-0.53). The changes in quartiles for all three time measurements indicated that approximately 70% of participants had stable (participants in the same quartile for all three measurements) or moderately stable (participants who exhibited changes varying by one quartile from the initial quartile) CRF levels. These findings showed moderate CRF tracking during adulthood over a period of up to 7 years.
AbstractList The stability of the relative order of cardiorespiratory fitness (CRF) during adulthood has not been sufficiently investigated. This study investigated the tracking of CRF over a 7-year follow-up period in Japanese male adults aged 18-53 years. A total of 3,718 male workers who underwent three submaximal exercise tests (a first test and again 3 and 7 years later for a second and third test) were included. CRF was defined as the maximal oxygen uptake estimated from a submaximal exercise test using a cycle ergometer. Spearman correlation coefficients for CRF in the first and second tests, the second and third tests and the first and third tests were 0.61, 0.62 and 0.54, respectively. A moderate kappa coefficient, indicating the degree of agreement for quartiles, was obtained for all follow-up periods (kappa coefficient = 0.43-0.53). The changes in quartiles for all three time measurements indicated that approximately 70% of participants had stable (participants in the same quartile for all three measurements) or moderately stable (participants who exhibited changes varying by one quartile from the initial quartile) CRF levels. These findings showed moderate CRF tracking during adulthood over a period of up to 7 years.
Author Takashi Okamoto
Hiroaki Tanaka
Hidenori Asai
Koji Tsukamoto
Ryoko Kawakami
Yutaka Yoshitake
Susumu S. Sawada
Yuko Gando
Haruka Murakami
Steven N. Blair
Naofumi Yamamoto
Motohiko Miyachi
I-Min Lee
Author_xml – sequence: 1
  fullname: Naofumi Yamamoto
  organization: Ehime University
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  fullname: Susumu S. Sawada
  organization: Department of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition
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  fullname: I-Min Lee
  organization: Division of Preventive Medicine, Brigham and Women's Hospital and Harvard Medical School
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  fullname: Yuko Gando
  organization: Department of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition
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  fullname: Ryoko Kawakami
  organization: Waseda University
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  fullname: Haruka Murakami
  organization: Department of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition
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  fullname: Motohiko Miyachi
  organization: Department of Physical Activity Research, National Institutes of Biomedical Innovation, Health and Nutrition
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  fullname: Yutaka Yoshitake
  organization: National Institute of Fitness and Sports in Kanoya
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  fullname: Hidenori Asai
  organization: Ehime University
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  fullname: Takashi Okamoto
  organization: Tokyo Gas Co., Ltd
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  fullname: Koji Tsukamoto
  organization: Tokyo Gas Co., Ltd
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  fullname: Hiroaki Tanaka
  organization: Laboratory of Exercise Physiology, Faculty of Sports and Health Science, Fukuoka University
– sequence: 13
  fullname: Steven N. Blair
  organization: Arnold School of Public Health, University of South Carolina
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Snippet The stability of the relative order of cardiorespiratory fitness (CRF) during adulthood has not been sufficiently investigated. This study investigated the...
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physical activity
regression dilution bias
stability
Title Tracking of cardiorespiratory fitness in Japanese men
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