دورية أكاديمية
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The Effect of Age on Technique Variability and Outcome Variability during a Leg Press.

التفاصيل البيبلوغرافية
العنوان: The Effect of Age on Technique Variability and Outcome Variability during a Leg Press.
المؤلفون: Wilson C; Department for Health, University of Bath, Bath, United Kingdom., Perkin OJ; Department for Health, University of Bath, Bath, United Kingdom.; Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Bath, United Kingdom., McGuigan MP; Department for Health, University of Bath, Bath, United Kingdom., Stokes KA; Department for Health, University of Bath, Bath, United Kingdom.; Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Bath, United Kingdom.
المصدر: PloS one [PLoS One] 2016 Oct 04; Vol. 11 (10), pp. e0163764. Date of Electronic Publication: 2016 Oct 04 (Print Publication: 2016).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
أسماء مطبوعة: Original Publication: San Francisco, CA : Public Library of Science
مواضيع طبية MeSH: Aging*/physiology , Motor Activity* , Movement*, Leg/*physiology, Adult ; Age Factors ; Aged ; Aged, 80 and over ; Biomechanical Phenomena ; Female ; Humans ; Knee Joint ; Male ; Muscle Strength ; Young Adult
مستخلص: The aim of this study was to determine the effect of aging on power generation and joint coordination during a leg press, in order to increase understanding of how functional movements are affected during the aging process. 44 older and 24 younger adults performed eight sub-maximal power repetitions on a seated leg press dynamometer. Peak power and velocity (at 40% maximum resistance) were measured along with the coordination (coupling angle) of the lower limb joints using the vector coding technique. The younger adults produced significantly greater peak power than the older adults (mean ± SD; 762 W ± 245 vs 361 W ± 162, p < 0.01) and at higher peak velocities (mean ± SD; 1.37 m/s ± 0.05 vs 1.00 m/s ± 0.06, p < 0.01). The older adults produced less consistent values of peak power than younger adults, evidenced by a higher coefficient of variation (mean ± SD; 7.6% ± 5.2 vs 5.0% ± 3.0, p < 0.01), however, there was significantly less variability in the coupling angles displayed by the older adults compared to the younger adults (mean ± SD; 2.0° ± 1.1 vs 3.5° ± 2.7, p < 0.01 (ankle-knee); 1.7° ± 0.6 vs 4.1° ± 3.0, p < 0.01 (knee-hip)). The results of this study demonstrate that older adults display higher outcome variability but lower variability in technique (coordination). The more rigid movement strategies displayed by the older adults potentially reflects an increased risk of overuse injury due to repetitive demands on the same structures, or the reduced ability to respond to unexpected situations due to a lack of flexibility in joint control.
Competing Interests: The authors have declared that no competing interests exist.
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تواريخ الأحداث: Date Created: 20161005 Date Completed: 20170616 Latest Revision: 20181113
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC5049752
DOI: 10.1371/journal.pone.0163764
PMID: 27701431
قاعدة البيانات: MEDLINE
الوصف
تدمد:1932-6203
DOI:10.1371/journal.pone.0163764