Comparative Effects of Fatiguing Exercise on Anticipatory and Compensatory Postural Adjustments Between Trained and Untrained Individuals

Overview

Journal Life (Basel)

Specialty Biology

Date 2024 Aug 29

PMID 39202685

Authors

Hui Lyu

Xueying Cao

Jian Wang

Affiliations

Soon will be listed here.

Abstract

This study evaluates the effects of general fatiguing exercises on anticipatory postural adjustments (APAs), compensatory postural adjustments (CPAs), and standing stability between 18 individuals with comprehensive training experience (TR) and 18 untrained individuals (UT). Assessments were conducted before and after a 20-min fatiguing exercise using surface electromyography and a force platform during self-initiated perturbation and postural stability tests. Key findings include that, irrespective of fatigue, the APAs onsets in the TrA/IO ( = 0.004), LMF (PRE = 0.003, POST < 0.001), and ST (PRE = 0.001, POST = 0.006) muscles activated earlier in the TR group than in the UT group. Additionally, the APA co-contraction indices of the TrA/IO-LMF (PRE = 0.011, POST = 0.029), TrA/IO-ST ( = 0.014), and LMF-ST (PRE = 0.002, POST = 0.005) muscle pairs were higher in the TR group. After fatigue, the UT group significantly increased CPA co-contraction indices for the TrA/IO-LMF ( = 0.035) and LMF-ST ( = 0.005) muscle pairs. This research highlights the importance of comprehensive training in facilitating feedforward control strategies, particularly for individuals facing challenging postural conditions, such as fatigue or disturbances.

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