Bone health, muscle properties and stretch-shortening cycle function of young and elderly males
Document Type
Journal Article
Publication Title
Journal of Musculoskeletal Neuronal Interactions
Publisher
International Society of Musculoskeletal and Neuronal Interactions
School
Centre for Exercise and Sports Science Research
RAS ID
31246
Abstract
The aim of this study was to examine bone, muscle, strength and stretch-shortening cycle (SSC) performance in young and elderly individuals with an ankle model to elucidate potential effects of ageing that have been suggested to influence fall risk. Moderately active young (n=10; age=22.3±1.3 yrs) and elderly (n=8; age=67.5±3.3 yrs) males completed a peripheral quantitative computed tomography scan on the dominant lower leg, maximal voluntary isometric plantarflexions (MVIP) and SSC tasks: a countermovement hop and drop hops from three different heights. Bone stress-strain index at 14% of the lower leg and muscle density, muscle cross-sectional area and muscle+bone cross-sectional area at 66% of the lower leg were all significantly greater (p≤0.05) in younger males than elderly males. Younger males also had significantly greater rate of force development and peak force during the MVIP when compared to the elderly. Younger males achieved significantly higher forces, velocities and hop heights during all SSC tasks than elderly males. Such information provides support for greater specificity in exercise interventions that prevent lower leg morphological and functional decrements in the ageing population.
Access Rights
free_to_read
Comments
Rice, P. E., Needle, A. R., Leicht, Z. S., Zwetsloot, McBride, J. M. (2019). Bone health, muscle properties and stretch-shortening cycle function of young and elderly males. Journal of Musculoskeletal and Neuronal Interactions, 19(4), 389-395. Available here