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EFFECTS OF A CARBOHYDRATE AND A CARBOHYDRATE AND CASEIN PROTEIN BEVERAGES ON RECOVERY AND PERFORMANCE OF ENDURANCE CYCLING CAPACITY

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Author(s): Cepero M | Rojas FJ | Geerlings A | De la Cruz JC | Romero S | Boza JJ

Journal: Journal of Human Sport and Exercise
ISSN 1988-5202

Volume: 4;
Issue: 2;
Start page: 161;
Date: 2009;
Original page

Keywords: Ergogenic supplement | casein protein | recovery | cycling performance.

ABSTRACT
The main aim of this study was to determine if short-term post exercise recovery, cycling performance and muscle damage were altered when consuming a carbohydrate-only beverage (CHO, 7% carbohydrate) versus a carbohydrate and casein protein beverage (CHO+P, 7% carbohydrate and 4% protein). Fifteen male cyclists (VO2peak= 63.4±9.6 ml•kg-1•min-1) performed two trials using a randomly counterbalanced, double-blind design. In each trial one liter of one of the test drinks was consumed in fasting conditions after 1 hour ride at 75% VO2peak determined by Arts and Kuipers´ regression equation .After a two hours recovery period the cyclists rode 20 km at the rider’s maximum speed for this distance. The results showed no significant differences in the 20-km ride when consuming the CHO (1770±210 s) or the CHO+P drink (1819±185 s). Post-exercise creatine kinase (CK) was not significantly different between treatments. However, serum insulin concentrations were higher during recovery when CHO+P beverage was consumed (P
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