The effects of resistance training to near volitional failure on motor unit recruitment during neuromuscular fatigue.

ABSTRACT:

Background

It is unclear whether chronically training close to volitional failure influences motor unit recruitment strategies during fatigue.

Purpose

We compared resistance training to near volitional failure vs. non-failure on individual motor unit action potential amplitude (MUAP) and surface electromyographic excitation (sEMG) during fatiguing contractions.

Methods

Nineteen resistance-trained adults (11 males, 8 females) underwent 5 weeks (3×/week) of either low repetitions-in-reserve (RIR; 0-1 RIR) or high RIR training (4-6 RIR). Before and after the intervention, participants performed isometric contractions of the knee extensors at 30% of maximal peak torque until exhaustion while vastus lateralis sEMG signals were recorded and later decomposed. MUAP and

SUBMITTER: Beausejour JP 

PROVIDER: S-EPMC11485100 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature