Effects of 28 days of beta-alanine and creatine monohydrate supplementation on aerobic power, ventilatory and lactate thresholds, and time to exhaustion
| Autor: | Michelle Mielke, Robert F. Zoeller, D. J. Torok, Joseph A. O'kroy, Jeffrey R. Stout |
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| Rok vydání: | 2006 |
| Předmět: |
Adult
Male medicine.medical_specialty Anaerobic Threshold Ergometry Clinical Biochemistry beta-Alanine Creatine Placebo Biochemistry Placebos chemistry.chemical_compound Oxygen Consumption Double-Blind Method Internal medicine Task Performance and Analysis medicine Humans Aerobic exercise Exercise Muscle fatigue business.industry Lactate threshold Organic Chemistry Endocrinology chemistry Dietary Supplements Muscle Fatigue Exercise Test Physical Endurance Physical therapy Creatine Monohydrate Ventilatory threshold business |
| Zdroj: | Amino Acids. 33:505-510 |
| ISSN: | 1438-2199 0939-4451 |
| DOI: | 10.1007/s00726-006-0399-6 |
| Popis: | The effect of beta-alanine (beta-Ala) alone or in combination with creatine monohydrate (Cr) on aerobic exercise performance is unknown. The purpose of this study was to examine the effects of 4 weeks of beta-Ala and Cr supplementation on indices of endurance performance. Fifty-five men (24.5 +/- 5.3 yrs) participated in a double-blind, placebo-controlled study and randomly assigned to one of 4 groups; placebo (PL, n = 13), creatine (Cr, n = 12), beta-alanine (beta-Ala, n = 14), or beta-alanine plus creatine (CrBA, n = 16). Prior to and following supplementation, participants performed a graded exercise test on a cycle ergometer to determine VO(2peak), time to exhaustion (TTE), and power output, VO(2), and percent VO(2peak) associated with VT and LT. No significant group effects were found. However, within groups, a significant time effect was observed for CrBa on 5 of the 8 parameters measured. These data suggest that CrBA may potentially enhance endurance performance. |
| Databáze: | OpenAIRE |
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