Abstract:
:The central governor model has recently been proposed as a general model to explain the phenomenon of fatigue. It proposes that the subconscious brain regulates power output (pacing strategy) by modulating motor unit recruitment to preserve whole body homoeostasis and prevent catastrophic physiological failure such as rigor. In this model, the word fatigue is redefined from a term that describes an exercise decline in the ability to produce force and power to one of sensation or emotion. The underpinnings of the central governor model are the refutation of what is described variously as peripheral fatigue, limitations models, and the cardiovascular/anaerobic/catastrophe model. This argument centres on the inability of lactic acid models of fatigue to adequately explain fatigue. In this review, it is argued that a variety of peripheral factors other than lactic acid are known to compromise muscle force and power and that these effects may protect against "catastrophe". Further, it is shown that a variety of studies indicate that fatigue induced decreases in performance cannot be adequately explained by the central governor model. Instead, it is suggested that the concept of task dependency, in which the mechanisms of fatigue vary depending on the specific exercise stressor, is a more comprehensive and defensible model of fatigue. This model includes aspects of both central and peripheral contributions to fatigue, and the relative importance of each probably varies with the type of exercise.
journal_name
Br J Sports Medjournal_title
British journal of sports medicineauthors
Weir JP,Beck TW,Cramer JT,Housh TJdoi
10.1136/bjsm.2005.023028subject
Has Abstractpub_date
2006-07-01 00:00:00pages
573-86; discussion 586issue
7eissn
0306-3674issn
1473-0480pii
40/7/573journal_volume
40pub_type
杂志文章,评审abstract:OBJECTIVE:The use of muscle balancing by the clinician to determine return to activity or discharge of a patient is not a well understood measure. Because of the lack of information on the poorly understood concept of eccentric/concentric (E/C) ratios at the ankle, the purpose was to determine the E/C ratios for the in...
journal_title:British journal of sports medicine
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abstract:OBJECTIVES:To compare cardiorespiratory responses between incremental treadmill (non-specific) and field (sport specific) tests in elite squash players. METHODS:Seven elite players (ranked 1 to 25 in their national federation including the World number 1) randomly performed an incremental treadmill test (TT) and a squ...
journal_title:British journal of sports medicine
pub_type: 杂志文章,随机对照试验
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更新日期:2005-12-01 00:00:00
abstract:OBJECTIVE:To analyse risk factors leading to injuries during snowboarding. DESIGN:A case-control multicentre survey of injured and non-injured snowboarders. SETTING:One tertiary and two secondary trauma centres in Bern, Switzerland. METHODS:All snowboard injuries admitted to our tertiary and two affiliated secondary...
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journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
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doi:10.1136/bjsm.2004.015990
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更新日期:2015-02-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章,meta分析,评审
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更新日期:2009-07-01 00:00:00
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更新日期:2008-03-01 00:00:00
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更新日期:2005-06-01 00:00:00
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更新日期:1997-06-01 00:00:00
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更新日期:2011-09-01 00:00:00
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更新日期:1987-03-01 00:00:00
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