A behavioral mechanism of how increases in leg strength improve old adults′ gait speed

Azusa Uematsu, Kazushi Tsuchiya, Norio Kadono, Hirofumi Kobayashi, Takamasa Kaetsu, Tibor Hortobágyi, Shuji Suzuki

    研究成果: Article査読

    10 被引用数 (Scopus)

    抄録

    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.

    本文言語English
    論文番号e110350
    ジャーナルPLoS One
    9
    10
    DOI
    出版ステータスPublished - 2014 10 13

    ASJC Scopus subject areas

    • Agricultural and Biological Sciences(all)
    • Biochemistry, Genetics and Molecular Biology(all)
    • Medicine(all)

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