Effect of elk velvet antler supplementation on the hormonal response to acute and chronic exercise in male and female rowers.
To examine the effects of elk velvet antler supplementation (EVA) combined with training on resting and exercise-stimulated hormonal response, male (n = 25) and female (n = 21) rowers ingested either EVA (560 mg/d) or placebo (PL) during 10 wk of training. VO(2max), 2000 m rowing time, leg and bench press strength were determined before and after 5 and 10 wk of training. Serum hormone levels were measured prior to and 5 and 60 min after a simulated 2000 m rowing race. VO(2max)and strength increased and 2000 m times decreased similarly (P < 0.05) with training. There was no significant difference between the EVA and PL group for any hormonal response. Testosterone (males only) and growth hormone (both genders) were higher 5 min after the simulated race (P < 0.05) but returned to baseline at 60 min. Cortisol was higher 5 and 60 min compared to rest (both genders) (P < 0.05) and was higher 60 min post-exercise following 5 and 10 wk of training. It appears that 10 wk of EVA supplementation does not significantly improve rowing performance nor alter hormonal responses at rest or after acute exercise than training alone.
Syrotuik
Daniel G
DG
Faculty of Physical Educatin and Recreation, University of Alberta, Edmonton, AB, Canada.
MacFadyen
Kirsten L
KL
Harber
Vicki J
VJ
Bell
Gordon J
GJ
D000328:Adult; D000818:Animals; D000999:Antlers / Q000737:chemistry*; D003670:Deer; D019587:Dietary Supplements; D015444:Exercise / Q000502:physiology*; D005260:Female; D013006:Growth Hormone / Q000097:blood; D006728:Hormones / Q000097:blood*; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology*; D010807:Physical Endurance / Q000502:physiology; D005082:Physical Exertion / Q000502:physiology; D012737:Sex Factors; D013177:Sports / Q000502:physiology*; D013739:Testosterone / Q000097:blood; D014020:Tissue Extracts / Q000494:pharmacology*
D006728:Hormones; D014020:Tissue Extracts; D013739:Testosterone; D013006:Growth Hormone; D006854:Hydrocortisone