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document
Effects of creatine supplementation on repetitive sprint performance and body composition in competitive swimmers . In a double-blind and randomized manner , 18 male and female junior competitive swimmers supplemented their diets with 21 g.day-1 of creatine monohydrate ( Cr ) or a maltodextrin placebo ( P ) for 9 days during training . Prior to and following supplementation , subjects performed three 100-m freestyle sprint swims ( long course ) with 60 s rest/recovery between heats . In addition , subjects performed three 20-s arm ergometer maximal-effort sprint tests in the prone position with 60 s rest/recovery between sprint tests . Significant differences were observed among swim times , with Cr subjects swimming significantly faster than P subjects following supplementation in Heat 1 and significantly decreasing swim time in the second 100-m sprint . There was also some evidence that cumulative time to perform the three 100-m swims was decreased in the Cr group . Results indicate that 9 days of Cr supplementation during swim training may provide some ergogenic value to competitive junior swimmers during repetitive sprint performance .
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Intervention_Pharmacological
creatine supplementation
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Intervention_Pharmacological
creatine monohydrate ( Cr )
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Intervention_Control
maltodextrin placebo ( P )
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Intervention_Pharmacological
Cr
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Outcome_Other
swim times
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Outcome_Other
swim time
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Outcome_Other
cumulative time to perform the three 100-m swims