Abstract：
:This study examined the effect of heat stress on physiological responses and exercise performance in elite road cyclists. Eleven members of the Australian National Road Cycling Squad completed two 30 min cycling time-trials in an environmental chamber set at either 32 degrees C, (HT) or 23 degrees C (NT) with a relative humidity of 60% in each circumstance. The trials were separated by two days, with six subjects performing HT first. Power output was 6.5% lower (P<0.05) during HT compared with NT. Mean skin temperature and sweat rate were higher (P<0.05) in HT compared with NT. In contrast, rectal temperature was remarkably similar throughout each trial. During the first 10 min of exercise in HT when power output was not different between trials, blood lactate was higher (P<0.05), and blood pH lower (P<0.05). In contrast, during the last 10 min of exercise when power output was reduced (P<0.05), blood lactate was lower (P<0.05), and pH higher (P<0.05), in HT. These data indicate that heat stress is associated with a reduced power output during self-paced exercise in highly trained men. This decrease in performance appears to be associated with factors associated with body temperature rather than metabolic capacity.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Tatterson AJ,Hahn AG,Martin DT,Febbraio MAdoi
10.1016/s1440-2440(00)80080-8keywords:
subject
Has Abstractpub_date
2000-06-01 00:00:00pages
186-93issue
2eissn
1440-2440issn
1878-1861pii
S1440-2440(00)80080-8journal_volume
3pub_type
杂志文章abstract：OBJECTIVES:To examine how clinically measured hip motion is related to shoulder biomechanics during the pitching motion. DESIGN:Cross-sectional. METHODS:Bilateral hip rotational range of motion was measured clinically among 34 collegiate baseball pitchers. External rotation torque and maximum horizontal adduction ran...
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
abstract：OBJECTIVES:Resistance exercise is used as a non-pharmacological tool to elicit both gains in and maintenance of physical function in the elderly. Thus, the present study examined the acute response of creatine kinase and interleukin-6 following an eccentric resistance exercise session in elderly obese women classified ...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2013.09.012
更新日期：2014-11-01 00:00:00
abstract：OBJECTIVES:To explore the association between electronic media exposure (television viewing time, personal computer/video game use, total screen time), and waist circumference and body mass index, and study whether this association is independent of cardiorespiratory fitness, in a representative sample of adolescents f...
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
abstract：OBJECTIVES:The aim of this study was to investigate if and to what extent small lateral wedges inserted under the ski boot, known as canting, could impact knee kinematics/kinetics, balance, and neuromuscular activity in recreational alpine skiers in the laboratory setting. DESIGN:Experimental, crossover study with rep...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.05.009
更新日期：2020-05-17 00:00:00
abstract：:While taper is a well-established practice in most endurance sports, no study has investigated the effects of taper on repeated-sprint ability (RSA). Eleven female, recreational, team-sport athletes (mean+/-SD: age = 19+/-3 y, VO2max = 39.0+/-6.4 mLxkg(-1)xmin(-1)) trained intensively three times per week for six week...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(05)80011-8
更新日期：2005-06-01 00:00:00
abstract：OBJECTIVES:This study investigated the influence of a moderate caffeine dose on endurance cycle performance and thermoregulation during prolonged exercise in high ambient temperature. DESIGN:Double-blind cross-over study. METHODS:Eight healthy, recreationally active males (mean±SD; age: 22±1 years; body mass: 71.1±8....
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.2017.03.017
更新日期：2017-11-01 00:00:00
abstract：:Jones's control model was adopted to investigate differences in the labelling of symptoms associated with pre-competition anxiety and self-confidence as a function of goal attainment expectation and competition goal generation. Team sport performers (N = 96) were divided into outcome, performance and process goal grou...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(05)80057-x
更新日期：2005-12-01 00:00:00
abstract：OBJECTIVES:To measure the change in tackling technique of rugby union players following an acute bout of physically fatiguing exercise. DESIGN:Randomised cross-over study design with a physical fatigue condition and no-physical fatigue condition (control). METHODS:Nineteen male amateur club rugby union players (n=19)...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2020.04.005
更新日期：2020-11-01 00:00:00
abstract：:The purpose of this project was to determine whether changing patterns of temperature and humidity, as expected in the morning versus afternoon, had a differential effect on thermoregulation and endurance performance. Eight male distance runners each participated in two heat pattern tests consisting of two hours tread...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/s1440-2440(99)80005-x
更新日期：1999-12-01 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：2019-08-01 00:00:00
abstract：OBJECTIVES:To examine the effects of match-related and individual player characteristics on running performance in professional rugby league matches. DESIGN:Longitudinal observational study. METHODS:Global positioning system (GPS) and technical performance measures (attacking involvements and tackles made) were colle...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2015.06.008
更新日期：2016-06-01 00:00:00
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 IS...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2007.05.013
更新日期：2009-01-01 00:00:00
abstract：:The terminology used for monitoring and promoting physical activity and exercise among health and fitness professionals varies considerably. There is a large array of descriptor terms reported in the literature and used in day-to-day practice and this inconsistency can be confusing for clients and practitioners alike....
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/j.jsams.2009.09.008
更新日期：2010-09-01 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.2016.11.003
更新日期：2017-06-01 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.2017.07.009
更新日期：2018-01-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/s1440-2440(00)80040-7
更新日期：2000-09-01 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
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2007.04.006
更新日期：2008-11-01 00:00:00
abstract：OBJECTIVES:This study investigated the effects of a previously recommended dose of sprint training (ST) in young male soccer players of differing maturity status. DESIGN:Quasi-experimental design. METHODS:Male soccer players from two professional academies were divided into Pre-PHV (Training: n=12; Control: n=13) and...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.09.012
更新日期：2018-05-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
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更新日期：2004-04-01 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
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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,随机对照试验
doi：10.1016/j.jsams.2017.08.006
更新日期：2018-04-01 00:00:00
abstract：OBJECTIVES:Research is equivocal regarding endurance performance benefits of external nasal dilators, and currently research focusing on internal nasal dilators is non-existent. Both devices are used within competitive cycling. This study examined the influence of external and internal nasal dilation on cycling economy...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,随机对照试验
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更新日期：2017-04-01 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.2008.07.004
更新日期：2010-01-01 00:00:00
abstract：:Low levels of physical activity coupled with high levels of television viewing have been linked with obesity in children. The objective of this study was to assess the efficacy of 'Switch Off-Get Active', a 16-week controlled health education intervention, in increasing physical activity and reducing screen time and B...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2006.06.012
更新日期：2006-10-01 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：2003-06-01 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.2018.03.013
更新日期：2018-10-01 00:00:00
abstract：:This study determined the pacing strategies and performance responses of six well-trained cyclists/triathletes (peak O2 uptake 66.4+/-3.7 ml x kg(-1) x min(-1), mean+/-SD) during seven simulated time-trials (TT) conducted on a wind-braked cycle ergometer. All subjects first performed a 40 km familiarisation ride (TT1)...
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：2001-06-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to determine whether V˙O(2) kinetics and specifically, the time constant of transitions from rest to heavy (τ(p)H) and severe (τ(p)S) exercise intensities, are related to middle distance swimming performance. DESIGN:Fourteen highly trained male swimmers (mean ± SD: 20.5 ± 3.0 yr; 75...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
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更新日期：2012-01-01 00:00:00
abstract：OBJECTIVES:To explore the impact of uninterrupted sitting versus sitting with resistance-type activity breaks on adolescents' postprandial glucose responses while consuming a diet varying in energy. DESIGN:Cross-over randomised trial. METHODS:Thirteen healthy participants (16.4±1.3years) completed a four-treatment cr...
journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2017.06.002
更新日期：2018-03-01 00:00:00
