Alterations in energy system contribution following upper body sprint interval training.
Eur J Appl Physiol
; 120(3): 643-651, 2020 Mar.
Article
en En
| MEDLINE
| ID: mdl-31974857
ABSTRACT
PURPOSE:
The primary purpose of this study was to examine the influence of different work-to-rest ratios on relative energy system utilization during short-term upper-body sprint interval training (SIT) protocols.METHODS:
Forty-two recreationally trained men were randomized into one of three training groups [10 s work bouts with 2 min of rest (102, n = 11) or 4 min of rest (104, n = 11), or 30 s work bouts with 4 min of rest (304, n = 10)] or a control group (CON, n = 10). Participants underwent six training sessions over 2 weeks with 4-6 'all-out' sprints. Participants completed an upper body Wingate test (30 s 'all-out' using 0.05 kg kg-1 of the participant's body mass) pre- and post-intervention from which oxygen consumption and blood lactate were used to estimate oxidative, glycolytic, and adenosine triphosphate-phosphocreatine (ATP-PCr) energy system provisions. An analysis of covariance was performed on all testing measurements collected at post with the associated pre-values used as covariates.RESULTS:
Relative energy contribution (p = 0.026) and energy expenditure (p = 0.019) of the ATP-PCr energy system were greater in 104 (49.9%; 62.1 kJ) compared to CON (43.1%; 47.2 kJ) post training. No significant differences were found between groups in glycolytic or oxidative energy contribution over a 30 s upper body Wingate test.CONCLUSION:
SIT protocols with smaller work-to-rest ratios may enhance ATP-PCr utilization in a 30 s upper body Wingate over a 2-week intervention.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Metabolismo Energético
/
Entrenamiento de Intervalos de Alta Intensidad
Tipo de estudio:
Clinical_trials
Límite:
Adult
/
Humans
/
Male
Idioma:
En
Revista:
Eur J Appl Physiol
Asunto de la revista:
FISIOLOGIA
Año:
2020
Tipo del documento:
Article
País de afiliación:
Estados Unidos