Effect of isometric upper-extremity exercises on the activation of core stabilizing muscles
To evaluate whether isometric exercises for the upper extremities could sufficiently activate core stabilizing muscles to increase muscle strength. Cross-sectional study. Department of physical medicine and rehabilitation at a Finnish hospital. Healthy adult women (N=20). Not applicable. Peak isomet...
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| Published in: | Archives of physical medicine and rehabilitation Vol. 89; no. 3; p. 513 |
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| Main Authors: | , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
United States
01.03.2008
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| ISSN: | 1532-821X, 1532-821X |
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| Abstract | To evaluate whether isometric exercises for the upper extremities could sufficiently activate core stabilizing muscles to increase muscle strength.
Cross-sectional study.
Department of physical medicine and rehabilitation at a Finnish hospital.
Healthy adult women (N=20).
Not applicable.
Peak isometric strength of the back and abdominal muscles was measured and relative loading in 5 test exercises was evaluated by surface electromyography.
The rectus abdominis and obliquus externus abdominis were activated to the greatest degree in a bilateral shoulder extension exercise and the average surface electromyographic activity was 114% and 101% compared with the amplitude elicited during the maximal isometric trunk flexion exercise. Horizontal shoulder extension elicited the greatest activation of the longissimus and multifidus muscles. In this exercise, the activity levels of the left side multifidus and longissimus muscles were 84% and 69%, respectively, compared with the level of activity elicited during trunk extension.
Of all the exercises studied, bilaterally performed isometric shoulder extension and unilaterally performed horizontal shoulder extension elicited the greatest levels of activation of the trunk musculature. Thus, it can be assumed that these exercises elicit sufficient levels of contraction of the trunk muscles for the development of their endurance and strength characteristics in rehabilitation. |
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| AbstractList | To evaluate whether isometric exercises for the upper extremities could sufficiently activate core stabilizing muscles to increase muscle strength.OBJECTIVETo evaluate whether isometric exercises for the upper extremities could sufficiently activate core stabilizing muscles to increase muscle strength.Cross-sectional study.DESIGNCross-sectional study.Department of physical medicine and rehabilitation at a Finnish hospital.SETTINGDepartment of physical medicine and rehabilitation at a Finnish hospital.Healthy adult women (N=20).PARTICIPANTSHealthy adult women (N=20).Not applicable.INTERVENTIONSNot applicable.Peak isometric strength of the back and abdominal muscles was measured and relative loading in 5 test exercises was evaluated by surface electromyography.MAIN OUTCOME MEASURESPeak isometric strength of the back and abdominal muscles was measured and relative loading in 5 test exercises was evaluated by surface electromyography.The rectus abdominis and obliquus externus abdominis were activated to the greatest degree in a bilateral shoulder extension exercise and the average surface electromyographic activity was 114% and 101% compared with the amplitude elicited during the maximal isometric trunk flexion exercise. Horizontal shoulder extension elicited the greatest activation of the longissimus and multifidus muscles. In this exercise, the activity levels of the left side multifidus and longissimus muscles were 84% and 69%, respectively, compared with the level of activity elicited during trunk extension.RESULTSThe rectus abdominis and obliquus externus abdominis were activated to the greatest degree in a bilateral shoulder extension exercise and the average surface electromyographic activity was 114% and 101% compared with the amplitude elicited during the maximal isometric trunk flexion exercise. Horizontal shoulder extension elicited the greatest activation of the longissimus and multifidus muscles. In this exercise, the activity levels of the left side multifidus and longissimus muscles were 84% and 69%, respectively, compared with the level of activity elicited during trunk extension.Of all the exercises studied, bilaterally performed isometric shoulder extension and unilaterally performed horizontal shoulder extension elicited the greatest levels of activation of the trunk musculature. Thus, it can be assumed that these exercises elicit sufficient levels of contraction of the trunk muscles for the development of their endurance and strength characteristics in rehabilitation.CONCLUSIONSOf all the exercises studied, bilaterally performed isometric shoulder extension and unilaterally performed horizontal shoulder extension elicited the greatest levels of activation of the trunk musculature. Thus, it can be assumed that these exercises elicit sufficient levels of contraction of the trunk muscles for the development of their endurance and strength characteristics in rehabilitation. To evaluate whether isometric exercises for the upper extremities could sufficiently activate core stabilizing muscles to increase muscle strength. Cross-sectional study. Department of physical medicine and rehabilitation at a Finnish hospital. Healthy adult women (N=20). Not applicable. Peak isometric strength of the back and abdominal muscles was measured and relative loading in 5 test exercises was evaluated by surface electromyography. The rectus abdominis and obliquus externus abdominis were activated to the greatest degree in a bilateral shoulder extension exercise and the average surface electromyographic activity was 114% and 101% compared with the amplitude elicited during the maximal isometric trunk flexion exercise. Horizontal shoulder extension elicited the greatest activation of the longissimus and multifidus muscles. In this exercise, the activity levels of the left side multifidus and longissimus muscles were 84% and 69%, respectively, compared with the level of activity elicited during trunk extension. Of all the exercises studied, bilaterally performed isometric shoulder extension and unilaterally performed horizontal shoulder extension elicited the greatest levels of activation of the trunk musculature. Thus, it can be assumed that these exercises elicit sufficient levels of contraction of the trunk muscles for the development of their endurance and strength characteristics in rehabilitation. |
| Author | Tarnanen, Sami P Siekkinen, Kirsti M Mälkiä, Esko A Kautiainen, Hannu J Häkkinen, Arja H Ylinen, Jari J |
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| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/18295631$$D View this record in MEDLINE/PubMed |
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| SubjectTerms | Abdominal Muscles - physiology Adult Cohort Studies Cross-Sectional Studies Electromyography Exercise Therapy - methods Female Humans Isometric Contraction - physiology Middle Aged Muscle Strength - physiology Muscle, Skeletal - physiology Postural Balance - physiology Posture Probability Reference Values Rehabilitation Centers Sensitivity and Specificity Upper Extremity |
| Title | Effect of isometric upper-extremity exercises on the activation of core stabilizing muscles |
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