Changes in twitch contractile characteristics of plantarflexor muscles during repeated fatiguing submaximal static contractions

被引:0
作者
Pääsuke, M [1 ]
Ereline, J [1 ]
Gapeyeva, H [1 ]
机构
[1] Univ Tartu, Inst Exercise Biol, EE-51014 Tartu, Estonia
关键词
human plantarflexor muscles; contractile properties; isometric contractions; fatigue;
D O I
暂无
中图分类号
G8 [体育];
学科分类号
04 ; 0403 ;
摘要
Changes in twitch contractile properties of human plantarflexor (PF) muscles during repeated fatiguing submaximal static contractions were studied in 22 young men. To determine the contractile properties of PF muscles the posterior tibial nerve in popliteal fossa was stimulated by supramaximal square wave pulses of 1 ms duration after maximal voluntary contraction (MVC) of 5 s duration (in post-activation potentiation condition). The fatiguing exercise consisted of three trials of submaximal static contractions (60% MVC force), which were performed with inter-trial rest intervals of 2 min. MVC force and twitch characteristics were measured in pre-exercise condition, after each trial and after 5 min and 10 min recovery period. MVC force decreased significantly after the 2(nd) and 3(rd) trial and then recovered to the initial level after 5 min of fatiguing exercise. It has been suggested that muscle fatigue in repeated submaximal contractions resulted both in a significant decline in potentiated twitch maximal force and a prolongation of twitch contraction and half-relaxation time. During the 10 min post-fatigue recovery period the twitch maximal force was significantly declined (post-contractile depression) and time course of twitch was shortened.
引用
收藏
页码:169 / 177
页数:9
相关论文
共 33 条
  • [1] TWITCH POTENTIATION AFTER FATIGUING EXERCISE IN MAN
    ALWAY, SE
    HUGHSON, RL
    GREEN, HJ
    PATLA, AE
    FRANK, JS
    [J]. EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY AND OCCUPATIONAL PHYSIOLOGY, 1987, 56 (04): : 461 - 466
  • [2] FATIGUE OF INTERMITTENT SUBMAXIMAL VOLUNTARY CONTRACTIONS - CENTRAL AND PERIPHERAL FACTORS
    BIGLANDRITCHIE, B
    FURBUSH, F
    WOODS, JJ
    [J]. JOURNAL OF APPLIED PHYSIOLOGY, 1986, 61 (02) : 421 - 429
  • [3] CENTRAL FATIGUE AS REVEALED BY POSTEXERCISE DECREMENT OF MOTOR EVOKED-POTENTIALS
    BRASILNETO, JP
    COHEN, LG
    HALLETT, M
    [J]. MUSCLE & NERVE, 1994, 17 (07) : 713 - 719
  • [4] PH-INDUCED EFFECTS ON MEDIAN FREQUENCY AND CONDUCTION-VELOCITY OF THE MYOELECTRIC SIGNAL
    BRODY, LR
    POLLOCK, MT
    ROY, SH
    DE LUCA, CJ
    CELLI, B
    [J]. JOURNAL OF APPLIED PHYSIOLOGY, 1991, 71 (05) : 1878 - 1885
  • [5] THE METABOLIC CAUSES OF SLOW RELAXATION IN FATIGUED HUMAN SKELETAL-MUSCLE
    CADY, EB
    ELSHOVE, H
    JONES, DA
    MOLL, A
    [J]. JOURNAL OF PHYSIOLOGY-LONDON, 1989, 418 : 327 - 337
  • [6] FATIGUE OF LONG DURATION IN HUMAN SKELETAL-MUSCLE AFTER EXERCISE
    EDWARDS, RHT
    HILL, DK
    JONES, DA
    MERTON, PA
    [J]. JOURNAL OF PHYSIOLOGY-LONDON, 1977, 272 (03): : 769 - 778
  • [7] EDWARDS RHT, 1981, HUMAN MUSCLE FATIGUE, P1
  • [8] Supraspinal factors in human muscle fatigue: Evidence for suboptimal output from the motor cortex
    Gandevia, SC
    Allen, GM
    Butler, JE
    Taylor, JL
    [J]. JOURNAL OF PHYSIOLOGY-LONDON, 1996, 490 (02): : 529 - 536
  • [9] PROLONGATION OF TWITCH POTENTIATING MECHANISM THROUGHOUT MUSCLE FATIGUE AND RECOVERY
    GARNER, SH
    HICKS, AL
    MCCOMAS, AJ
    [J]. EXPERIMENTAL NEUROLOGY, 1989, 103 (03) : 277 - 281
  • [10] GAMMA-LOOP CONTRIBUTING TO MAXIMAL VOLUNTARY CONTRACTIONS IN MAN
    HAGBARTH, KE
    KUNESCH, EJ
    NORDIN, M
    SCHMIDT, R
    WALLIN, EU
    [J]. JOURNAL OF PHYSIOLOGY-LONDON, 1986, 380 : 575 - 591