Heat acclimatization does not improve VO2max or cycling performance in a cool climate in trained cyclists.
Scand J Med Sci Sports
; 25 Suppl 1: 269-76, 2015 Jun.
Article
em En
| MEDLINE
| ID: mdl-25943678
ABSTRACT
This study investigated if well-trained cyclists improve V Ë O 2 m a x and performance in cool conditions following heat acclimatization through natural outdoor training in hot conditions. Eighteen trained male cyclists were tested for physiological adaptations, V Ë O 2 m a x , peak aerobic power output, exercise efficiency, and outdoor time trial (TT) performance (43.4 km in cool environment, â¼5-13 °C) before and after 2 weeks of training in a cool (CON, n = 9) or hot (â¼35 °C, HA, n = 9) environment. After heat acclimatization, TT performance in the heat was improved by 16%; however, there was no change in the HA group in V Ë O 2 m a x (4.79 ± 0.21 L/min vs 4.82 ± 0.35 L/min), peak aerobic power output (417 ± 16 W vs 422 ± 17 W), and outdoor TT performance in cool conditions (300 ± 14 W/69 ± 3 min vs 302 ± 9 W/69 ± 4 min). The present study shows that 2 weeks of heat acclimatization was associated with marked improvements in TT performance in the heat. However, for the well-trained endurance athletes, this did not transfer to an improved aerobic exercise capacity or outdoor TT performance in cool conditions.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Consumo de Oxigênio
/
Ciclismo
/
Temperatura Baixa
/
Desempenho Atlético
/
Temperatura Alta
/
Aclimatação
Limite:
Adult
/
Humans
/
Male
Idioma:
En
Revista:
Scand J Med Sci Sports
Ano de publicação:
2015
Tipo de documento:
Article