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Monitoring exercise-induced muscle damage indicators and myoelectric activity during two weeks of knee extensor exercise training in young and old men

Heckel, Zoltán and Atlasz, Tamás and Tékus, Éva and Kőszegi, Tamás and Laczkó, József and Váczi, Márk (2019) Monitoring exercise-induced muscle damage indicators and myoelectric activity during two weeks of knee extensor exercise training in young and old men. PLOS ONE, 14 (11). ISSN 1932-6203

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Abstract

This study considered the effects of repeated bouts of short-term resistive exercise in old (age: 64.5±5.5 years; n = 10) and young men (age: 25.1±4.9 years; n = 10) who performed six knee extension exercise bouts over two weeks using various markers of exercise-induced muscle damage and electromyographic activity. We found that time-course changes in quadriceps isometric torque, creatine kinase activity, and muscle soreness in the two groups were similar. However, recovery in the acute torque deficit was mediated by more favourable electromyographic activity changes in the young group than in the older adults group. Muscle elastic energy storage and re-use assessed with dynamometry was selectively improved in the young group by the end of the protocol. Serum myoglobin concentration increased selectively in old group, and remained elevated with further bouts, suggesting higher sarcolemma vulnerability and less effective metabolic adaptation in the older adults, which, however, did not affect muscle contractility.

Item Type: Article
Additional Information: Funding Agency and Grant Number: NKFIH [FK129190]; New National Excellence Program of the Ministry of Human Capacities [UNKP-18-4-PTE-364]; Institutional Excellence Program 2018 [17886-4/2018 FEKUTSTRAT]; University of Pecs, Medical School [KA-2018-17]; [GINOP 2.3.2-15-2016-00047] Funding text: The present work was supported by the GINOP 2.3.2-15-2016-00047, the NKFIH FK129190, the UNKP-18-4-PTE-364 New National Excellence Program of the Ministry of Human Capacities, the "Institutional Excellence Program 2018" (17886-4/2018 FEKUTSTRAT) grants and the University of Pecs, Medical School, KA-2018-17 research grant.
Subjects: R Medicine / orvostudomány > R1 Medicine (General) / orvostudomány általában
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 06 Oct 2020 14:06
Last Modified: 06 Oct 2020 14:06
URI: http://real.mtak.hu/id/eprint/115786

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