고강도 크로스핏에 참여하는 성인남성의 항산화제 섭취가 신체산증 요인에 미치는 영향 = Effect of Antioxidant Supplementation on Factors of Metabolic Acidosis in Adult Males Participating in High-Intensity CrossFit

다국어 초록 (Multilingual Abstract)

This study aims to present a nutritional intervention to prevent metabolic acidosis—a downside of modern high-intensity, short-duration exercise—by investigating the effects of antioxidant supplementation on biomarkers related to acidosis.
Methods Twenty healthy adult males aged 20–35 who regularly participated in high-intensity CrossFit training were randomly assigned into two groups: an antioxidant supplementation group (IG: In-take Group) and a non-supplementation group (NG: Non-take Group), with 10 participants in each group. Over an 8-week period, all participants engaged in 40-minute CrossFit sessions at 75–95% HRmax.
Biomarkers of metabolic acidosis—lactate and uric acid—were measured for all participants. Measurements were taken 10 minutes after the first training session (pre-test) and 10 minutes after the final (32nd) session (post-test) for comparative analysis.
Results Eight weeks of antioxidant supplementation significantly reduced the rate of increase in blood lactate levels following high-intensity CrossFit exercise in adult males.
Eight weeks of antioxidant supplementation also significantly reduced the rate of increase in uric acid levels in the same context.
Antioxidant supplementation proved effective in preventing metabolic acidosis during high-intensity exercise in adult males.
Conclusion This study demonstrates that antioxidant supplementation can significantly reduce metabolic acidosis indicators such as lactate and uric acid in high-intensity, short-duration exercise like CrossFit, which is increasingly popular among modern adults. Therefore, it may be suggested as a viable strategy to prevent exercise-induced metabolic acidosis.