In addition, plasma cortisol concentrations (approximately 145–193 ng · dL−1) induced by the prolonged submaximal exercise in the study of Walker et al. buy Z-DEVD-FMK [35] are obviously lower than those in our study. Pre and post-intermittent exercise did not produce significantly different salivary cortisol concentrations after CHO beverage ingestion [59]. According to the results from the current investigation, adding CHO to a solution and

ingesting a CAF capsule does not affect hormone variables. This is probably because the intensity of the RSE exerts a strong influence on hormones without ergogenic aids. Changes in these hormones during RSE after ingesting CAF and CHO require further investigation. Conclusions The data demonstrate that ingesting CAF and CHO or only CAF does not increase peak or mean power, or total work during RSE, or improve selleck inhibitor agility, compared to ingesting PLA + PLA. In contrast to CAF + CHO, CAF + PLA, and PLA + PLA conditions, ingesting PLA + CHO increased sprint performance during 10 sets of 5 × 4-s sprints, with a 20-s rest interval between each sprint (2-min rest between each set). Ingesting PLA + CHO did not alter RPE, agility performance, or hormone profiles. The results suggest that in female athletes, ingesting CHO without CAF before exercise may increase

repeated sprint performance. Acknowledgements We would like to thank all participants and research assistants for their effort in the study. This work was partly supported by a research grant from the Ministry of Science and Technology, Taiwan (NSC 101–2410-H-110–085). This work was also particularly supported by “Aim for the Top University Plan” of National Taiwan Normal University , National Sun Yat-sen University, and the Ministry

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