A Behavioral Mechanism of How Increases in Leg Strength Improve Old Adults' Gait Speed
| Autor: | Alway, Stephen, Uematsu, Azusa, Tsuchiya, Kazushi, Kadono, Norio, Kobayashi, Hirofumi, Kaetsu, Takamasa, Hortobágyi, Tibor, Suzuki, Shuji |
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| Přispěvatelé: | SMART Movements (SMART) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Male
lcsh:Medicine Walking Intervention group Isometric exercise WALKING-SPEED Medicine and Health Sciences Medicine Biomechanics Leg strength lcsh:Science Leg press Gait Aged 80 and over Multidisciplinary Age Factors WOMEN medicine.anatomical_structure SKELETAL-MUSCLE Female FUNCTIONAL PERFORMANCE LIFE-STYLE Research Article medicine.medical_specialty Strength training POWER B100 Physical medicine and rehabilitation AGE Humans Muscle Strength Sports and Exercise Medicine Exercise Aged Leg EXECUTIVE FUNCTION Biological Locomotion business.industry lcsh:R Biology and Life Sciences Resistance Training COGNITIVE FUNCTION C800 Gait speed Physical therapy lcsh:Q Ankle PHYSICAL PERFORMANCE business human activities |
| Zdroj: | PLoS ONE, Vol 9, Iss 10, p e110350 (2014) PLoS ONE, 9(10):e110350. PUBLIC LIBRARY SCIENCE PLoS ONE |
| ISSN: | 1932-6203 |
| Popis: | We examined a behavioral mechanism of how increases in leg strength improve healthy old adults' gait speed. Leg press strength training improved maximal leg press load 40% (p = 0.001) and isometric strength in 5 group of leg muscles 32% (p = 0.001) in a randomly allocated intervention group of healthy old adults (age 74, n = 15) but not in no-exercise control group (age 74, n = 8). Gait speed increased similarly in the training (9.9%) and control (8.6%) groups (time main effect, p = 0.001). However, in the training group only, in line with the concept of biomechanical plasticity of aging gait, hip extensors and ankle plantarflexors became the only significant predictors of self-selected and maximal gait speed. The study provides the first behavioral evidence regarding a mechanism of how increases in leg strength improve healthy old adults' gait speed. |
| Databáze: | OpenAIRE |
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