a team sport skill-related task as it relates to caffeine
supplementation. Results of this study [33] also indicated
that for the caffeine condition subjects were able
to maintain sprint times at the end of the circuit, relative
to the beginning of the protocol.
Schneiker et al. [34] also examined the effects of caffeine
supplementation on repeated sprint ability common
to sports such as soccer and field hockey. Ten
male recreationally competitive team sport athletes took
part in an intermittent-sprint test lasting approximately
80 minutes in duration. Results of the study indicated a
caffeine dose of 6 mg/kg was successful in inducing
more total sprint work, as compared to placebo. Specifically,
total sprint work was 8.5% greater in the first half
and 7.6% greater in the second respectively [34].
Based on the research presented [29,30,33,34,74], it is
apparent that moderate caffeine supplementation in the
range of 4-6 mg/kg can be advantageous to either short
term or intermittent/prolonged duration high-intensity
performance, but only in trained athletes. The training
and conditioning of these athletes may result in specific
physiologic adaptations which, in combination with caffeine
supplementation, may lead to performance
enhancement, or the variability in performance of
untrained subjects may mask the effect of the caffeine.
a team sport skill-related task as it relates to caffeinesupplementation. Results of this study [33] also indicatedthat for the caffeine condition subjects were ableto maintain sprint times at the end of the circuit, relativeto the beginning of the protocol.Schneiker et al. [34] also examined the effects of caffeinesupplementation on repeated sprint ability commonto sports such as soccer and field hockey. Tenmale recreationally competitive team sport athletes tookpart in an intermittent-sprint test lasting approximately80 minutes in duration. Results of the study indicated acaffeine dose of 6 mg/kg was successful in inducingmore total sprint work, as compared to placebo. Specifically,total sprint work was 8.5% greater in the first halfand 7.6% greater in the second respectively [34].Based on the research presented [29,30,33,34,74], it isapparent that moderate caffeine supplementation in therange of 4-6 mg/kg can be advantageous to either shortterm or intermittent/prolonged duration high-intensityperformance, but only in trained athletes. The trainingand conditioning of these athletes may result in specificphysiologic adaptations which, in combination with caffeinesupplementation, may lead to performanceenhancement, or the variability in performance ofuntrained subjects may mask the effect of the caffeine.
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