Abstract:
:This study examined the effects of active warm up on thermoregulatory responses and intermittent-sprint cycle performance in hot conditions (35.5+/-0.6 degrees C, RH 48.7+/-3.4%). Eight trained males performed a 36-min, intermittent-sprint test (IST) after no (WUP 0), 10-min (WUP 10) or 20-min warm up (WUP 20). The IST contained 2-min blocks consisting of a 4-s sprint, 100s active recovery and 20s passive rest. Twice during the IST, there was a repeated-sprint bout (RSB) comprising five, 2-s sprints separated by approximately 20s. There were no significant differences between trials for mean work (3870+/-757 versus 4028+/-562 versus 3804+/-494Jsprint(-1)), peak power (W) or work decrement (%). However, mean work was significantly less in RSB2 than RSB1 for WUP 20 only (P<0.05). Plasma lactate was significantly higher after active warm up (WUP 20=WUP 10>WUP 0; P<0.05), but not significantly different between conditions following either RSB. Rectal temperature (T(re)) was significantly higher after active warm up (37.0+/-0.3 versus 37.3+/-0.3 versus 37.7+/-0.1 degrees C for WUP0, WUP10 and WUP20, respectively) and throughout the IST. The longer active warm up resulted in a greater increase in T(re) and was associated with a decrease in short-term repeated-sprint ability (with incomplete recovery), but not prolonged, intermittent-sprint performance in the heat. As active warm up did not improve performance (<40min), team-sport athletes may minimise changes in T(re) (and the likelihood of heat illness) by avoiding excessive warm up when competing in the heat.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Bishop D,Maxwell NSdoi
10.1016/j.jsams.2007.05.013subject
Has Abstractpub_date
2009-01-01 00:00:00pages
196-204issue
1eissn
1440-2440issn
1878-1861pii
S1440-2440(07)00190-9journal_volume
12pub_type
杂志文章abstract:OBJECTIVES:As time with patients and resources are increasingly limited, it is important to determine if clinical tests can provide further insight into real-world behaviors linked to clinical outcomes. The purpose of this study was to determine which aspects of anthropometry and physical fitness testing are associated...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2019.12.005
更新日期:2020-06-01 00:00:00
abstract::Attraction to physical activity is important to an individual's intrinsic motivation to engage in play, games and sports. While there are instruments designed to measure attraction to physical activity in middle childhood years, the lack of authentic measures in young children has impeded research in this area. In thi...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2009.05.009
更新日期:2009-09-01 00:00:00
abstract::We challenge the tradition of fitness testing in schools on the basis of purpose, procedures and outcomes. A number of assumptions about validity of selected tests are raised. The need to be able to track fitness through childhood into adulthood is challenged with limited scientific evidence of longitudinal tracking. ...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2006.01.002
更新日期:2006-05-01 00:00:00
abstract:OBJECTIVES:The objective of this study was to examine the association between resistance exercise and cardiovascular disease risk, independent of body composition, physical activity and aerobic capacity, in healthy women. DESIGN:A cross-sectional analysis including 7321 women with no history of heart disease, hyperten...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2014.09.009
更新日期:2015-11-01 00:00:00
abstract::Many overweight and obese individuals have difficulty in performing aerobic fitness tests that require maximal exertion. Therefore, the purpose of this study was to investigate the reliability of the Aerobic Power Index (API) submaximal aerobic exercise test, as well as associated variables consisting of oxygen uptake...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2006.05.024
更新日期:2007-06-01 00:00:00
abstract:OBJECTIVES:Swimmers must enter a marshalling call-room 20min prior to racing, which results in some swimmers completing their warm-up 45min pre-race. Since a recovery period longer than 15-20min may prove problematic, this study examined 200m freestyle performance after a 20 and 45min post-warm-up recovery period. DES...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jsams.2012.06.002
更新日期:2013-03-01 00:00:00
abstract:OBJECTIVES:Despite evidence suggesting caution, employment of body mass index (BMI, kgm-2) as a proxy for percentage of body fat (PFat) in longitudinal studies of children and adolescents remains commonplace. Our objective was to test the validity of change in BMI as a proxy for change in PFat measured by dual-energy X...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2018.08.002
更新日期:2019-03-01 00:00:00
abstract::The objective of this study was to analyze changes in stroke rate (SR), stroke length (SL) and stroke phases (entry and catch, pull, push and recovery) when swimming at (MLSS) and above (102.5% MLSS) the maximal lactate steady state. Twelve endurance swimmers (21±8 year, 1.77±0.10 m and 71.6±7.7 kg) performed in diffe...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2010.08.004
更新日期:2011-03-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2014.05.005
更新日期:2015-05-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2013.09.010
更新日期:2014-09-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2017.10.016
更新日期:2018-06-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2018.09.229
更新日期:2019-08-01 00:00:00
abstract::The progress of injury prevention research in Australian football to date has been slow despite its recognition as a public health goal. In particular, field-based studies to identify injury risk factors and evaluate the effectiveness of injury prevention strategies need to be undertaken to ensure safety gains in this...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/s1440-2440(03)80259-1
更新日期:2003-06-01 00:00:00
abstract:OBJECTIVES:Current best evidence has reported that therapeutic exercise programs that are designed to treat patellofemoral pain (PFP) should include both hip and knee specific exercises. The purpose of this review was to (1) examine the quality/comprehensiveness of exercise reporting in this field; (2) quantify the ext...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,评审
doi:10.1016/j.jsams.2020.09.001
更新日期:2020-09-10 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2017.07.004
更新日期:2018-03-01 00:00:00
abstract::Despite frequent media accounts of drownings in the United Arab Emirates, little was known about the epidemiology and prevention of such incidents. The research objective was to assess newspapers as a national source on incidence, activities, and risk factors for drowning in this high-income media-rich developing coun...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2007.08.016
更新日期:2009-01-01 00:00:00
abstract:OBJECTIVES:To quantify and profile the training and match loads of international footballers as they transition from club-to-camp-to-tournament contexts during multiple international tournaments. DESIGN:Retrospective single-cohort observational study. METHODS:External (session duration and count) and internal (sessio...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2019.02.006
更新日期:2019-08-01 00:00:00
abstract:OBJECTIVES:We evaluated the benefits and relationship of the number of steps per day to the cardiometabolic risk factors: adiposity indicators; insulin resistance; and metabolic syndrome (MetS) in apparently healthy Brazilian middle-aged men. DESIGN:Cross-sectional. METHODS:Apparently healthy men (age: 50 ± 5 years; ...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2013.04.017
更新日期:2014-05-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2014.07.011
更新日期:2015-09-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.jsams.2012.02.005
更新日期:2012-11-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2014.01.002
更新日期:2015-03-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
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更新日期:2005-06-01 00:00:00
abstract:OBJECTIVES:It has been hypothesised that fatigue may be a major factor in tackle-related injury risk in rugby union and hence more injuries occur in the later stages of a game. The aim of this study is to identify changes in ball carrier or tackler proficiency characteristics, using elite level match video data, as pla...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2017.06.023
更新日期:2018-02-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2007.06.005
更新日期:2008-09-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jsams.2017.03.014
更新日期:2017-10-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
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更新日期:2021-02-01 00:00:00
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journal_title:Journal of science and medicine in sport
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更新日期:2020-12-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
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更新日期:1999-10-01 00:00:00
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journal_title:Journal of science and medicine in sport
pub_type: 临床试验,杂志文章
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更新日期:2016-01-01 00:00:00
abstract::To delineate and compare the isokinetic neck strength profile of senior elite rugby players. One hundred and eighty-nine rugby players (mean; 95% confidence intervals: 24.31; 23.87-24.75 years) were sampled from South African provincial teams and assessed anthropometrically and isokinetically according to a set protoc...
journal_title:Journal of science and medicine in sport
pub_type: 杂志文章
doi:10.1016/j.jsams.2007.01.009
更新日期:2008-04-01 00:00:00