Abstract:
PURPOSE:To determine the effect of high- versus low-intensity training in the heat and ensuing taper period in the heat on endurance performance. METHODS:In total, 19 well-trained triathletes undertook 5 days of normal training and a 1-wk taper including either low- (heat acclimation [HA-L], n = 10) or high-intensity (HA-H, n = 9) training sessions in the heat (30°C, 50% relative humidity). A control group (n = 10) reproduced their usual training in thermoneutral conditions. Indoor 20-km cycling time trials (35°C, 50% relative humidity) were performed before (Pre) and after the main heat exposure (Mid) and after the taper (Post). RESULTS:Power output remained stable in the control group from Pre to Mid (effect size: -0.10 [0.26]) and increased from Mid to Post (0.18 [0.22]). The HA-L group demonstrated a progressive increase in performance from Pre to Mid (0.62 [0.33]) and from Mid to Post (0.53 [0.30]), alongside typical physiological signs of HA (reduced core temperature and heart rate and increased body-mass loss). While the HA-H group presented similar adaptations, increased perceived fatigue and decreased performance at Mid (-0.35 [0.26]) were evidenced and reversed at Post (0.50 [0.20]). No difference in power output was reported at Post between the HA-H and control groups. CONCLUSION:HA-H can quickly induce functional overreaching in nonacclimatized endurance athletes. As it was associated with a weak subsequent performance supercompensation, coaches and athletes should pay particular attention to training monitoring during a final preparation in the heat and reduce training intensity when early signs of functional overreaching are identified.
journal_name
Int J Sports Physiol Performauthors
Schmit C,Duffield R,Hausswirth C,Brisswalter J,Le Meur Ydoi
10.1123/ijspp.2017-0007subject
Has Abstractpub_date
2018-07-01 00:00:00pages
816-823issue
6eissn
1555-0265issn
1555-0273journal_volume
13pub_type
杂志文章,随机对照试验abstract::Recent psychophysiological models of endurance performance explained that pacing strategies and exercise-intensity regulation influence cyclists' ability to produce high mean power output (PO) during time trials (TTs). However, the relationships between these pacing strategies and psychological parameters of the athle...
journal_title:International journal of sports physiology and performance
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abstract:UNLABELLED:Regular monitoring of adaptation to training is important for optimizing training load and recovery, which is the main factor in successful training. PURPOSE:To investigate the usefulness of a novel submaximal running test (SRT) in field conditions in predicting and tracking changes of endurance performance...
journal_title:International journal of sports physiology and performance
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journal_title:International journal of sports physiology and performance
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journal_title:International journal of sports physiology and performance
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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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journal_title:International journal of sports physiology and performance
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journal_title:International journal of sports physiology and performance
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pub_type: 杂志文章,随机对照试验
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journal_title:International journal of sports physiology and performance
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pub_type: 杂志文章,随机对照试验
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