1 / 18

THE EFFECT OF VITAMIN E SUPPLEMENTATION ON PERFORMANCE AT ALTITUDE

THE EFFECT OF VITAMIN E SUPPLEMENTATION ON PERFORMANCE AT ALTITUDE. Anonymous Research Methods 27 Jul 04. PRIOR RESEARCH Vitamin as an Ergogenic Aid. Cureton (1954): wheat germ oil with E increased time to exhaustion both running and biking. PRIOR RESEARCH Vitamin as an Ergogenic Aid.

Thomas
Download Presentation

THE EFFECT OF VITAMIN E SUPPLEMENTATION ON PERFORMANCE AT ALTITUDE

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. THE EFFECT OF VITAMIN E SUPPLEMENTATION ON PERFORMANCE AT ALTITUDE Anonymous Research Methods 27 Jul 04

  2. PRIOR RESEARCHVitamin as an Ergogenic Aid • Cureton (1954): wheat germ oil with E increased time to exhaustion both running and biking

  3. PRIOR RESEARCHVitamin as an Ergogenic Aid • Effect Debunked in 1970s: • Shepard et al (1974) • Watt et al (1974) • Lawrence et al (1975) • Sharman et al (1976) • Confirmation of lack of effect in 1990s: • Rokitzki et al (1994) • Nielsen et al (1999)

  4. PRIOR RESEARCHVitamin as an Ergogenic Aid atAltitude • Kobayashi (1974): vitamin E (1200 IU/d for 6 wk) group showed a significantly increased aerobic work capacity at altitudes of 1525 meters (by 8.9%) and 4570 meters (by 14.2%)

  5. PRIOR RESEARCHVitamin as an Ergogenic Aid atAltitude • Kobayashi (1974):vitamin E (1200 IU/d for 6 wk) group showed a significantly increased aerobic work capacity at altitudes of 1525 meters (by 8.9%) and 4570 meters (by 14.2%) • Simon-Schnass and Pabst (1988): mountain climbers taking vitamin E (400 mg/d for 10 wks) demonstrated higher lactate thresholds than control group

  6. CURRENT RESEARCH • Focus on antioxidant properties: • Decreased Muscle Damage • Decreased Lipid Peroxidation • Decreased LDL Oxidation • Prevent, delay, and/or ease AMS • No recent studies on acuteperformance

  7. PURPOSE The purpose of this study is to determine whether 30 days of moderate Vitamin E supplementation will improve exercise performance at altitude.

  8. RATIONALE • Military Applications • Infantry/Artillery/etc. • Fighter Pilots • Athletic Applications • Adventure Racers • Cyclists • Runners • Mountaineers

  9. HYPOTHESES 1. Fit males who ingest 800 IU/d of Vitamin E for 30 d (E) will exhibit higher VO2max scores at 3500m than a control group (C) 2. E will have a higher LT than C at 3500 m 3. E will have higher SaO2 than C at 3500m 4. E will produce 400 kJ of work more quickly than C at 3500m

  10. METHODOLOGY • Trial 1: @ GL • VO2max • Lactate Threshold (LT) • Anthropometrics • Trial 2: @ 3500m • VO2max, LT • SpO2 • Trial 3: @ 3500m • Time to produce 400 kJ

  11. METHODOLOGY • Intervention 1: • E (n=9): 800 IU vitamin E for 30 d • C (n=9): placebo for 30 d • Repeat Trials 2 and 3 • VO2 max, LT, SpO2 • Time to produce 400 kJ • Intervention 2: • Subjects switch groups for 30 d • Repeat Trials 2 and 3

  12. VARIABLES • Independent Variables: • Vitamin E • Altitude • Dependant Variables • VO2max, LT, SaO2, • Time to 400 kJ, Rate of Perceived Exertion • Plasma -tocopherol

  13. STATISTICSDVs = VO2max, LT, SaO2 IV1 = Supplement Two-Way Analysis of Variance (Repeated Measures)

  14. STATISTICSDVs = Time to 400 kJ, [-tocopherol] IV1 = Supplement One-Way Analysis of Variance (Repeated Measures)

  15. POWER • For Power = 0.8, n  17 • Meaningful Difference = 10% • VO2max @ 3500 m: 50 – 45 = 5 (in ml/kg/min) SD ~ 5 (from Kobayashi) d = 5/5 = 1

  16. LIMITATIONS • Logistics: • 18 Subjects x 7 Trials • Altitude Chamber • Subject Compliance • Subject Nutrition • Lack of Previous Research • Family-wise Error?

  17. ANTICIPATED FINDINGS 1. Fit males who ingest 800 IU/d of Vitamin E for 30 d (E) will exhibit higher VO2max scores at 3500m than a control group (C) 2. E will have a higher LT than C at 3500 m 3. E will have higher SpO2 than C at 3500m 4. E will produce 400 kJ of work more quickly than C at 3500m

  18. REFERENCES • Cureton TK. Effect of wheat germ oil and vitamin E on normal human subjects in physical training programs [abstract]. Am JPhysiol. 179: 628, 1954. • Kobayashi Y. Effect of vitamin E on aerobic work performance in man during acute exposure to hypoxic hypoxia [dissertation]. Albuquerque (NM): University of New Mexico, 1974. • Shephard RJ. Vitamin E and athletic performance. J Sports Med. 23: 461-70, 1983. • Simon-Schnass I, Pabst H. Influence of vitamin E on physical performance. Int J Vitam Nutr Res. 58: 49-54, 1988. • Takanami Y, Iwane H, Kawai Y, Shimomitsu T. Vitamin E supplementation and endurance exercise: are there benefits? Sports Med. 29(2):73-83, 2000.

More Related