Hip mechanics underlie lower extremity power training-induced increase in old adults’ fast gait velocity
- Methods: As part of the Potsdam Gait Study (POGS), healthy old adults completed a no-intervention control period (69.1 +/- 4A yrs, n =14) or a power training program followed by detraining (72.9 +/- 5.4 yrs, n = 15).We measured isokinetic knee extensor and plantarflexor power and measured hip, knee and ankle kinetics at habitual, fast and standardized walking speeds. Results: Power training significantly increased isokinetic knee extensor power (25%), plantarflexor power (43%), and fast gait velocity (5.9%). Gait mechanics underlying the improved fast gait velocity included increases in hip angular impulse (29%) and H1 work (37%) and no changes in positive knee (K2) and A2 work. Detraining further improved fast gait velocity (4.7%) with reductions in H1(-35%), and increases in K2 (36%) and A2 (7%). Conclusion: Power training increased fast gait velocity in healthy old adults by increasing the reliance on hip muscle function and thus further strengthened the age-related distal-to-proximal shift in muscle function. (C) 2016 ElsevierMethods: As part of the Potsdam Gait Study (POGS), healthy old adults completed a no-intervention control period (69.1 +/- 4A yrs, n =14) or a power training program followed by detraining (72.9 +/- 5.4 yrs, n = 15).We measured isokinetic knee extensor and plantarflexor power and measured hip, knee and ankle kinetics at habitual, fast and standardized walking speeds. Results: Power training significantly increased isokinetic knee extensor power (25%), plantarflexor power (43%), and fast gait velocity (5.9%). Gait mechanics underlying the improved fast gait velocity included increases in hip angular impulse (29%) and H1 work (37%) and no changes in positive knee (K2) and A2 work. Detraining further improved fast gait velocity (4.7%) with reductions in H1(-35%), and increases in K2 (36%) and A2 (7%). Conclusion: Power training increased fast gait velocity in healthy old adults by increasing the reliance on hip muscle function and thus further strengthened the age-related distal-to-proximal shift in muscle function. (C) 2016 Elsevier B.V. All rights reserved.…
Author details: | Chantal M. I. Beijersbergen, Urs GranacherORCiDGND, Martijn Gaebler, Paul DeVita, Tibor HortobagyiORCiD |
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DOI: | https://doi.org/10.1016/j.gaitpost.2016.12.024 |
ISSN: | 0966-6362 |
ISSN: | 1879-2219 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/28043055 |
Title of parent work (English): | Gait & posture |
Subtitle (English): | the Potsdam Gait Study (POGS) |
Publisher: | Elsevier |
Place of publishing: | Clare |
Publication type: | Article |
Language: | English |
Date of first publication: | 2017/12/30 |
Publication year: | 2017 |
Release date: | 2022/06/27 |
Tag: | Biomechanics; Detraining; Exercise; Muscle; Walking |
Volume: | 52 |
Number of pages: | 7 |
First page: | 338 |
Last Page: | 344 |
Organizational units: | Humanwissenschaftliche Fakultät / Strukturbereich Kognitionswissenschaften / Department Sport- und Gesundheitswissenschaften |
DDC classification: | 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit |