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03.05.2024 | Original Article

Age-related effects of neuromuscular fatigue and acute recovery responses on maximal and rapid torque measures of the leg extensors and flexors

verfasst von: Brennan J. Thompson, Eric C. Conchola, Kimberly A. Clevenger

Erschienen in: European Journal of Applied Physiology

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Abstract

Purpose

To examine the effects of neuromuscular fatigue and recovery on maximal and rapid torque characteristics in young and old men for the leg extensors and flexors.

Methods

Twenty-one young (age = 24.8 years) and 19 old (72.1 years) men performed maximal voluntary contractions (MVCs) before and at 0, 7, 15, and 30 min following an intermittent submaximal fatigue task. Outcome measures included endurance time, maximal (peak torque; PT) and rapid (absolute and normalized rate of torque development; RTD and nRTD) torque characteristics.

Results

The old men had greater endurance times than the young men. Differential recovery patterns were observed for PT, and early and late RTD phases between the leg extensor and flexor muscle groups such that the early rapid torque variables and the flexors demonstrated slower recovery compared to later rapid torque variables and the extensors. The normalized RTD variables were reduced less after the fatigue task and differential muscle and age effects were observed where the flexors were reduced more at the early phase (nRTD1/6) compared to the extensors, however, for the later phase (nRTD2/3) the young men exhibited a greater reduction compared to the old men.

Conclusions

Dissimilar fatigue recovery patterns across different phases of RTD, lower limb muscles, and age groups may have important fatigue-related performance and injury risk implications across the adult lifespan.

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Titel: Age-related effects of neuromuscular fatigue and acute recovery responses on maximal and rapid torque measures of the leg extensors and flexors
verfasst von: Brennan J. Thompson
Eric C. Conchola
Kimberly A. Clevenger
Publikationsdatum: 03.05.2024
Verlag: Springer Berlin Heidelberg
Erschienen in: European Journal of Applied Physiology
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI: https://doi.org/10.1007/s00421-024-05493-4

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Age-related effects of neuromuscular fatigue and acute recovery responses on maximal and rapid torque measures of the leg extensors and flexors

Abstract

Purpose

Methods

Results

Conclusions

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Die Highlights vom Kongress des American College of Cardiology 2024

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Abstract

Purpose

Methods

Results

Conclusions

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