Pacing Adjustments Associated With Familiarization: Heat Versus Temperate Environments.
Int J Sports Physiol Perform
; 11(7): 855-860, 2016 Oct.
Article
in En
| MEDLINE
| ID: mdl-26694885
ABSTRACT
PURPOSE:
To describe the effect of the initial perceptual experience from heat familiarization on the pacing profile during a freepaced endurance time trial (TT) compared with temperate conditions.METHODS:
Two groups of well-trained triathletes performed two 20-km TTs in either hot (35°C and 50% relative humidity [RH], n = 12) or temperate (21°C and 50% RH, n = 22) conditions, after standardization of training for each group before both trials. To ensure no physiological acclimation differences between conditions, the TTs for both groups were separated by 11 ± 4 d.RESULTS:
Performance improvement in the heat (11 ± 24 W) from the 1st to 2nd trial appeared comparable to that in temperate conditions (8 ± 14 W, P = .67). However, the specific alteration in pacing profile in the heat was markedly different than temperate conditions, with a change from "positive" to an "even" pacing strategy.CONCLUSIONS:
Altered perceptions of heat during heat familiarization, rather than physiological acclimatization per se, may mediate initial changes in pacing and TT performance in the heat. These results highlight the need for athletes without time for sufficient heat acclimatization to familiarize themselves with hot conditions to reduce the uncertainty from behavior-based outcomes that may impede performance.Key words
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bicycling
/
Climate
/
Recognition, Psychology
/
Acclimatization
Type of study:
Risk_factors_studies
Limits:
Adult
/
Humans
/
Male
Language:
En
Journal:
Int J Sports Physiol Perform
Journal subject:
FISIOLOGIA
/
MEDICINA ESPORTIVA
Year:
2016
Document type:
Article