Heterogeneity of the strength response to progressive resistance exercise training in older adults: Contributions of muscle contractility.

ABSTRACT:

Background

Older adults display wide individual variability (heterogeneity) in the effects of resistance exercise training on muscle strength. The mechanisms driving this heterogeneity are poorly understood. Understanding of these mechanisms could permit development of more targeted interventions and/or improved identification of individuals likely to respond to resistance training interventions. Thus, this study assessed potential physiological factors that may contribute to strength response heterogeneity in older adults: neural activation, muscle hypertrophy, and muscle contractility.

Methods

In 24 older adults (72.3 ± 6.8 years), we measured the following parameters before and after 12 weeks of progressive resistance exercise training: i) isometric leg extensor strength;

SUBMITTER: Clark LA 

PROVIDER: S-EPMC8319076 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature