Cortical and spinal responses to short-term strength training and detraining in young and older adults in rectus femoris muscle.

ABSTRACT:

Introduction

Strength training mitigates the age-related decline in strength and muscle activation but limited evidence exists on specific motor pathway adaptations.

Methods

Eleven young (22-34 years) and ten older (66-80 years) adults underwent five testing sessions where lumbar-evoked potentials (LEPs) and motor-evoked potentials (MEPs) were measured during 20 and 60% of maximum voluntary contraction (MVC). Ten stimulations, randomly delivered, targeted 25% of maximum compound action potential for LEPs and 120, 140, and 160% of active motor threshold (aMT) for MEPs. The 7-week whole-body resistance training intervention included five exercises, e.g., knee extension (5 sets) and leg press (3 sets), performed twice weekly and was followed by 4 weeks of detraining.

Results

SUBMITTER: Gomez-Guerrero G 

PROVIDER: S-EPMC11199260 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature