The effects of lower body passive heating combined with mixed-method cooling during half-time on second-half intermittent sprint performance in the heat.
Eur J Appl Physiol
; 119(8): 1885-1899, 2019 Aug.
Article
en En
| MEDLINE
| ID: mdl-31222380
ABSTRACT
PURPOSE:
This study examined the effects of combined cooling and lower body heat maintenance during half-time on second-half intermittent sprint performances.METHODS:
In a repeated measures design, nine males completed four intermittent cycling trials (32.1 ± 0.3 °C and 55.3 ± 3.7% relative humidity), with either one of the following half-time recovery interventions; mixed-method cooling (ice vest, ice slushy and hand cooling; COOL), lower body passive heating (HEAT), combined HEAT and COOL (COMB) and control (CON). Peak and mean power output (PPO and MPO), rectal (Tre), estimated muscle (Tes-Mus) and skin (TSK) temperatures were monitored throughout exercise.RESULTS:
During half-time, the decrease in Tre was substantially greater in COOL and COMB compared with CON and HEAT, whereas declines in Tes-Mus within HEAT and COMB were substantially attenuated compared with CON and COOL. The decrease in TSK was most pronounced in COOL compared with CON, HEAT and COMB. During second-half, COMB and HEAT resulted in a larger decrease in PPO and MPO during the initial stages of the second-half when compared to CON. In addition, COOL resulted in an attenuated decrease in PPO and MPO compared to COMB in the latter stages of second-half.CONCLUSION:
The maintenance of Tes-Mus following half-time was detrimental to prolonged intermittent sprint performance in the heat, even when used together with cooling.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Entrenamiento de Intervalos de Alta Intensidad
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Calor
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Hipertermia Inducida
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Hipotermia Inducida
Límite:
Adult
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Humans
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Male
Idioma:
En
Revista:
Eur J Appl Physiol
Asunto de la revista:
FISIOLOGIA
Año:
2019
Tipo del documento:
Article
País de afiliación:
Singapur