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Erschienen in: European Journal of Applied Physiology 2/2010

01.01.2010 | Original Article

Acute effects of passive stretching on the electromechanical delay and evoked twitch properties

Erschienen in: European Journal of Applied Physiology | Ausgabe 2/2010

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Abstract

The purpose of this study was to investigate the acute effects of passive stretching on the electromechanical delay (EMD), peak twitch force (PTF), rate of force development (RFD), and compound muscle action potential (M-wave) amplitude during evoked twitches of the plantar flexor muscles. 16 men (mean age ± SD = 21.1 ± 1.7 years; body mass = 75.9 ± 11.4 kg; height = 176.5 ± 8.6 cm) participated in this study. A single, square-wave, supramaximal transcutaneous electrical stimulus was delivered to the tibial nerve before and after passive stretching. The stretching protocol consisted of nine repetitions of passive assisted stretching designed to stretch the calf muscles. Each repetition was held for 135 s separated by 5–10 s of rest. Dependent-samples t tests (pre- vs. post-stretching) were used to analyze the EMD, PTF, RFD, and M-wave amplitude data. There were significant changes (P ≤ 0.05) from pre- to post-stretching for EMD (mean ± SE = 4.84 ± 0.31 and 6.22 ± 0.34 ms), PTF (17.2 ± 1.3 and 15.6 ± 1.5), and RFD (320.5 ± 24.5 and 279.8 ± 28.2), however, the M-wave amplitude did not change (P > 0.05). These findings suggested that passively stretching the calf muscles affected the mechanical aspects of force production from the onset of the electrically evoked twitch to the peak twitch force. These results may help to explain the mechanisms underlying the stretching-induced force deficit that have been reported as either “mechanical” or “electrical” in origin.
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Metadaten
Titel
Acute effects of passive stretching on the electromechanical delay and evoked twitch properties
Publikationsdatum
01.01.2010
Erschienen in
European Journal of Applied Physiology / Ausgabe 2/2010
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-009-1214-3

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Die demographische Alterung hat vielfältige gesellschaftliche Konsequenzen, deren Ausmaß wesentlich vom Gesundheitszustand der Bevölkerung abhängt. Um diesen analysieren und bewerten zu können, wurden spezielle Kennziffern entwickelt, die in …

Wie hat sich die Lebenserwartung ohne funktionelle Einschränkungen in Deutschland entwickelt? Eine Analyse mit Daten des Deutschen Alterssurveys (DEAS)

Deutschland erfährt, wie andere Hocheinkommensstaaten, aufgrund kontinuierlich rückläufiger Mortalität und niedriger Geburtenraten tiefgreifende demografische Veränderungen. Der demografische Wandel führt in Deutschland zu einem zunehmend höheren …

Hitzeschutz im Fokus der hessischen Betreuungs- und Pflegeaufsicht

Open Access Klimawandel Übersichtsartikel

Im Sommer 2023 kündigte das Bundesministerium für Gesundheit (BMG) einen nationalen Hitzeschutzplan an und forderte die Länder auf, zu prüfen, „ob die Warnstufen des [Deutschen Wetterdienstes] DWD mit der Durchführung von Akutmaßnahmen …