Effects of Black Maca Supplementation on Isokinetic Muscle Function and Inflammation in Elite Athletes and Non-Athletes

초록

This study aimed to examine the effects of black maca supplementation on isokinetic muscle function and inflammatory markers in athletes and to extend these findings to non-athletes. The study involved 24 male participants, including 16 elite athletes (soft tennis and table tennis players) and 8 non-athletes (university students). Participants consumed capsules containing 2.5 g of 100% concentrated black maca extract over a 12-week period. Isokinetic muscle performance and physical fitness (strength, muscular endurance, flexibility, power, agility, cardiovascular endurance) assessments were conducted at baseline and after 12 weeks of supplementation. Two-way within-factor ANOVA showed a significant group x time interaction for 120 degrees/s flexor movements (p < 0.05). Paired t-tests demonstrated significant improvements in 30 degrees/s and 120 degrees/s extensor and flexor movements in both athlete groups (p < 0.05, p < 0.01). Similarly, significant enhancements were observed in the non-athletes for the 30 degrees/s flexor and 120 degrees/s extensor and flexor movements (p < 0.01). Furthermore, reductions in interleukin-6 (from 137.9 +/- 8.8 to 132.7 +/- 4.6, p < 0.05) and tumor necrosis factor-alpha (from 274.1 +/- 13.4 to 264.2 +/- 3.2, p < 0.05) were noted in the soft tennis group. The table tennis group also showed significant decreases in interleukin-6 (from 135.9 +/- 4.7 to 131.3 +/- 2.5, p < 0.01) and tumor necrosis factor-alpha (from 282.1 +/- 19.2 to 267.0 +/- 6.4, p < 0.05). No significant changes were observed in the non-athlete group. Black maca supplementation may enhance isokinetic muscle function in elite athletes by reducing muscle contraction fatigue and improving anti-inflammatory responses.

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