The effect of 6 days of sodium phosphate supplementation on appetite, energy intake, and aerobic capacity in trained men and women.
Int J Sport Nutr Exerc Metab
; 22(6): 422-9, 2012 Dec.
Article
en En
| MEDLINE
| ID: mdl-22804972
Ingestion of an acute dose of phosphate has been shown to attenuate energy intake in the subsequent meal. This raises the question of whether the practice of phosphate supplementation over a number of days by athletes to enhance performance also influences energy intake. This study investigated the effect of 6 d of phosphate supplementation on appetite and energy intake, as well as aerobic capacity, in trained individuals. Twenty participants completed two 6-d phases of supplementation with either sodium phosphate (50 mg/kg of fat-free mass per day) or a placebo in a double-blinded, counterbalanced design. On Days 1, 2, and 6 of supplementation, a laboratory meal was provided to assess appetite and ad libitum energy intake. All other food and drink consumed during each supplementation phase were recorded in a food diary. After the 6 d of supplementation, peak aerobic capacity (VO(2peak)) was assessed. There was no difference in energy intake at the laboratory meal after an acute dose (i.e., on Day 1; placebo 2,471 ± 919 kJ, phosphate 2,353 ± 987 kJ; p = .385) or prolonged supplementation with sodium phosphate (p = .581) compared with placebo. Likewise, there was no difference in VO(2peak) with phosphate supplementation (placebo 52.6 ± 5.2 ml · kg(-1) · min(-1), phosphate 53.3 ± 6.1 ml · kg(-1) · min(-1); p = .483). In summary, 6 d of sodium phosphate supplementation does not appear to influence energy intake. Therefore, athletes supplementing with sodium phosphate can do so without hindering their nutritional status. However, given that phosphate supplementation failed to improve aerobic capacity, the ergogenic benefit of this supplement remains questionable.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Regulación del Apetito
/
Fosfatos
/
Ingestión de Energía
/
Ejercicio Físico
/
Suplementos Dietéticos
/
Sobrepeso
/
Fenómenos Fisiológicos en la Nutrición Deportiva
Tipo de estudio:
Clinical_trials
Límite:
Adult
/
Female
/
Humans
/
Male
País/Región como asunto:
Oceania
Idioma:
En
Revista:
Int J Sport Nutr Exerc Metab
Asunto de la revista:
CIENCIAS DA NUTRICAO
/
MEDICINA ESPORTIVA
/
METABOLISMO
Año:
2012
Tipo del documento:
Article
País de afiliación:
Australia
Pais de publicación:
Estados Unidos