Abstract:
:The suitability of Gray's (1975) three-factor arousal theory as a model of human performance under stress was investigated in a study of basketball free-throw shooting. Free-throw attempts, made by members of an NCAA Division I men's varsity team, were videotaped during one full season. On the basis of Gray's theory, we predicted that increased stress (assumed to be present in games as opposed to practices) would be associated with longer pre-shot preparations and a greater incidence of overthrow shots. The prediction was confirmed by the results. Moreover, we found that free-throws were more frequently overthrown when attempted during crucial rather than non-crucial game situations. Further tests of the utility of Gray's theory are suggested.
journal_name
J Sports Scijournal_title
Journal of sports sciencesauthors
Whitehead R,Butz JW,Kozar B,Vaughn REdoi
10.1080/02640419608727726subject
Has Abstractpub_date
1996-10-01 00:00:00pages
393-401issue
5eissn
0264-0414issn
1466-447Xjournal_volume
14pub_type
杂志文章abstract::Children and adolescents mature at different rates such that individuals competing in the same competition may differ in physical and biological maturity despite being of similar chronological age. Whether or not differences translate into on-field performance in competition is relatively unknown. This study investiga...
journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2013.843016
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abstract::The mixture of dihydroxyacetone and pyruvate (DHAP) is an ergogenic aid that enhances muscle glucose extraction during prolonged aerobic exercise. In order to evaluate the effect of DHAP on muscle amino acid extraction during exercise, we measured arterial concentration and muscle exchange of amino acids in 18 untrain...
journal_title:Journal of sports sciences
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1080/02640419308729958
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journal_title:Journal of sports sciences
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1080/02640419608727738
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journal_title:Journal of sports sciences
pub_type: 杂志文章
doi:10.1080/02640414.2012.750005
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journal_title:Journal of sports sciences
pub_type: 杂志文章
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abstract::The purpose of this study was to examine the accuracy of methods to estimate ball spin rate and spin axis direction using multi-camera tracking technology. The method implemented by Hawk-Eye and a theoretical ball trajectory model were assessed for their accuracy against high speed-vision. A theoretical ball trajector...
journal_title:Journal of sports sciences
pub_type: 杂志文章
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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更新日期:1999-09-01 00:00:00
abstract::The current study sought to examine the construct validity of the Resistance Training Skills Battery for Children (RTSBc), a movement screen purported to assess resistance training skill in children. Children aged 7-10 years (n = 27, 21 males, 6 females) undertook measures of resistance training skill via the RTSBc, m...
journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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更新日期:2008-10-01 00:00:00
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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journal_title:Journal of sports sciences
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更新日期:2009-07-01 00:00:00
abstract:INTRODUCTION:High-Intensity Interval Training (HIIT) and Constant-Intensity Endurance Training (CIET) improves peak oxygen uptake (V̇O2) similarly in adults; but in children this remains unclear, as does the influence of maturity. METHODS:Thirty-seven boys formed three groups: HIIT (football; n = 14; 14.3 ± 3.1 years)...
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journal_title:Journal of sports sciences
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更新日期:2005-01-01 00:00:00
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