Abstract:
UNLABELLED:The contractile history of muscle can potentiate electrically evoked force production. A link to voluntary force production, related in part to an increase in reflex excitability, has been suggested. PURPOSE:Our purpose was to quantify the effect of postactivation potentiation on voluntary force production and spinal H-reflex excitability during explosive plantar flexion actions. METHODS:Plantar flexor twitch torque, soleus H-reflex amplitudes, and the rate of force development of explosive plantar flexion were measured before and after 4 separate conditioning trials (3 x 5 s maximal contractions). RESULTS:Twitch torque and rate of force production during voluntary explosive plantar flexion were significantly increased (P < .05) while H-reflex amplitudes remained unchanged. Although twitch torque was significantly higher after conditioning, leading to a small increase in the rate of voluntary force production, this was unrelated to changes in reflex excitability. CONCLUSION:We conclude that postactivation potentiation may result in a minor increase in the rate of voluntary isometric force production that is unrelated to neural excitability.
journal_name
Int J Sports Physiol Performauthors
Hodgson MJ,Docherty D,Zehr EPdoi
10.1123/ijspp.3.2.219subject
Has Abstractpub_date
2008-06-01 00:00:00pages
219-31issue
2eissn
1555-0265issn
1555-0273journal_volume
3pub_type
杂志文章abstract::Player loads and fatigue responses are reported in 15 professional rugby league players (24.3 ± 3.8 y) during a period of intensified fixtures. Repeated measures of internal and external loads, perceived well-being, and jump flight time were recorded across 22 d, comprising 9 training sessions and matches on days 5, 1...
journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2017-09-01 00:00:00
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更新日期:2021-01-09 00:00:00
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pub_type: 杂志文章
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更新日期:2019-10-11 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.7.1.79
更新日期:2012-03-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章,随机对照试验
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更新日期:2019-03-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.2017-0596
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.2015-0028
更新日期:2016-01-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2014-01-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2016-10-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2019-07-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2011-03-01 00:00:00
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pub_type: 杂志文章
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2016-07-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章,随机对照试验
doi:10.1123/ijspp.2016-0372
更新日期:2017-10-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章,随机对照试验
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更新日期:2009-12-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.2015-0227
更新日期:2016-05-01 00:00:00
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pub_type: 杂志文章
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更新日期:2014-03-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2006-09-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2015-09-01 00:00:00
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pub_type: 杂志文章
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更新日期:2013-09-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.4.2.278
更新日期:2009-06-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.2017-0121
更新日期:2018-02-01 00:00:00
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pub_type: 杂志文章
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更新日期:2018-07-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2019-07-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.2014-0358
更新日期:2015-07-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.2016-0056
更新日期:2017-01-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2020-12-03 00:00:00