Postexercise muscle glycogen recovery enhanced with a carbohydrate-protein supplement.
Med Sci Sports Exerc
; 38(6): 1106-13, 2006 Jun.
Article
em En
| MEDLINE
| ID: mdl-16775553
ABSTRACT
PURPOSE:
This study assessed whether liquid carbohydrate-protein (C+P) supplements, ingested early during recovery, enhance muscle glycogen resynthesis versus isoenergetic liquid carbohydrate (CHO) supplements, given early or an isoenergetic solid meal given later during recovery (PLB).METHODS:
Two hours after breakfast (7.0 kcal.kg; 0.3 g.kg P, 1.2 g.kg C, 0.1 g.kg F), six male cyclists performed a 60-min time trial (AMex). Pre- and postexercise, vastus lateralis glycogen concentrations were determined using nMRS. Immediately, 1 h, and 2 h postexercise, participants ingested C+P (4.8 kcal.kg; 0.8 g.kg C, 0.4 g.kg P), CHO (4.8 kcal.kg; 1.2 g.kg C), or PLB (no energy). Four hours postexercise, a solid meal was ingested. At that time, C+P and CHO received a meal identical to breakfast, whereas PLB received 21 kcal.kg (1 g.kg P, 3.6 g.kg C, 0.3 g.kg F); energy intake during 6 h of recovery was identical among treatments. After 6 h of recovery, measurement and cycling protocols (PMex) were repeated.RESULTS:
Absolute muscle glycogen utilization was 18% greater (PCONCLUSIONS:
C+P supplements, given early after exercise, enhance glycogen resynthesis relative to CHO and PLB. However, this does not influence performance in this type of exercise bout.
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Base de dados:
MEDLINE
Assunto principal:
Ciclismo
/
Carboidratos da Dieta
/
Proteínas Alimentares
/
Músculo Esquelético
/
Suplementos Nutricionais
/
Recuperação de Função Fisiológica
/
Glicogênio
Idioma:
En
Ano de publicação:
2006
Tipo de documento:
Article