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Titolo:
Force recovery after eccentric exercise in males and females
Autore:
Sayers, SP; Clarkson, PM;
Indirizzi:
Univ Massachusetts, Dept Exercise Sci, Amherst, MA 01003 USA Univ Massachusetts Amherst MA USA 01003 ercise Sci, Amherst, MA 01003 USA
Titolo Testata:
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 1-2, volume: 84, anno: 2001,
pagine: 122 - 126
SICI:
1439-6319(200101/02)84:1-2<122:FRAEEI>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
SHORTENING CYCLE EXERCISE; INDUCED MUSCLE DAMAGE; INDUCED INJURY; PREVENTION; STRENGTH; SORENESS;
Keywords:
maximal isometric force; strength loss; muscle damage; gender differences;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Sayers, SP Univ Massachusetts, Dept Exercise Sci, 110 Totman Bldg, Amherst, MA 01003 USA Univ Massachusetts 110 Totman Bldg Amherst MA USA 01003 003 USA
Citazione:
S.P. Sayers e P.M. Clarkson, "Force recovery after eccentric exercise in males and females", EUR J A PHY, 84(1-2), 2001, pp. 122-126

Abstract

In this study we investigated force loss and recovery after eccentric exercise, and further characterized profound losses in muscle function (n = 192subjects - 98 males, 94 females; population A). Maximal voluntary contractile force (MVC) was assessed before, immediately after, and at 36 and 132 hafter eccentric exercise. Two groups were then established (A(1) and A(2))Group A(1) demonstrated a >70% reduction in MVC immediately after exercise, but were recovering at 132 h after exercise. These subjects performed a follow-up MVC 26 days later (n = 32). Group A(2) demonstrated a >70% reduction in MVC immediately post-exercise, but still exhibited a >65% reduction in force at 132 h post-exercise; these subjects also performed a follow-up MVC every 7 days until full recovery was established (n = 9). In population A, there was a 57% reduction in MVC immediately post-exercise and a 67% recovery by 132 h post-exercise (P < 0.01), with no significant gender differences (P > 0.05). In group A(1), although more females (two-thirds) showed large force losses after exercise, these females demonstrated greater %MVC recovery at 132 h post-exercise (59% vs 44%) and at 26 days post-exercise (93% vs 81%) compared to the males. In group A(2), MVC recovery occurred between 33 and 47 days post-exercise. In conclusion, 21% of all subjects showeda delayed recovery in MVC after high-force eccentric exercise. Although there were no significant gender differences in force loss, a disproportionately larger number of females demonstrated force reductions of >70%. However, their recovery of force was more rapid than that observed for the males who also demonstrated a >70% force loss.

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Documento generato il 20/01/20 alle ore 07:42:03