Research Appraisals
Evidence-based critical appraisals of the latest medical research, systematically evaluated using Oxford CEBM methodology.
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PloS one
Effects of β-alanine supplementation on kickboxing-specific anaerobic performance, neuromuscular power, and strength endurance: A randomized, double-blind, placebo-controlled trial
β-Alanine (BA) elevates skeletal muscle carnosine and may improve repeated high-intensity performance; however, evidence in kickboxing is limited. This study investigated the effects of 4-week BA supplementation on sport-specific kickboxing anaerobic performance, neuromuscular power, and strength endurance in trained male kickboxers. Twenty-eight athletes were randomly assigned to BA (6.4 g·day ⁻ ¹; n = 14) or placebo (n = 14) in a double-blind, placebo-controlled design. Pre- and post-intervention assessments included the Kickboxing Anaerobic Speed Test (KAST₁-₅, KASTbest, KASTtotal, Performance Decrement Index [PDI]), neuromuscular power (countermovement jump [CMJ], squat jump [SJ]), and strength endurance tests (push-up, pull-up). Baseline differences were tested via t-tests, effect sizes calculated according to Hedges' g formula. Group × time effects were analyzed using two-way repeated-measures ANOVA with partial eta squared (ηp²) effect sizes. Baseline measures were comparable (all p > 0.05). After supplementation, no significant group × time interactions emerged for CMJ (p = 0.148), SJ (p = 0.717), KAST₁-₅ (all p > 0.05), KASTbest (p = 0.071), or PDI (p = 0.454). However significant improvements were observed in the BA group for KASTtotal (F(1,26) = 14.49, p < 0.001, ηp² = 0.358), push-ups (F(1,26) = 5.89, p = 0.023, ηp² = 0.185), and pull-ups (F(1,26) = 9.79, p = 0.004, ηp² = 0.274). Four weeks of BA supplementation enhanced total anaerobic performance (KASTtotal) and upper-body strength endurance (push-up, pull-up), while no significant changes were observed in neuromuscular jump performance (CMJ, SJ). BA appears to be a practical ergogenic aid for improving repeated-effort and strength-endurance capacity in kickboxing. Clinical trial registration ClinicalTrials.gov (NCT07319052).
15 May 2026
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Post-activation performance enhancement (PAPE) and taurine combination improves anaerobic performance in highly trained wrestlers: a double-blind, randomized, crossover study
BACKGROUND: PAPE is a physiological phenomenon that temporarily enhances muscular strength and responsiveness following high-intensity muscle activity. This study aimed to investigate the acute effects of a PAPE protocol combined with taurine supplementation on anaerobic performance, blood lactate levels, and neuromuscular fatigue in highly trained male wrestlers. METHODS: Twenty elite male wrestlers participated in a double-blind, crossover design comprising three separate sessions: (i) control with no supplementation or PAPE protocol (CON), (ii) PAPE protocol with placebo (PAPE*PLA), and (iii) PAPE protocol with taurine supplementation (PAPE*TAU). In the PAPE*PLA and PAPE*TAU conditions, participants completed 3 sets of 8 repetitions of squat and hip thrust exercises at 85% of their one-repetition maximum. Either a taurine supplement or a sucrose placebo was administered 60 minutes before the protocol. Five minutes after the PAPE protocol, the Wingate anaerobic power (WanT) test was conducted, while CMJ tests were performed before (CMJ-pre), immediately after (CMJ-post), and five minutes following (CMJ-post-5) the WanT. RESULTS: The PAPE*TAU condition resulted in significantly higher peak power output (16.76% increase; p = 0.048) and power relative to body mass (22.24% increase; p = 0.028) compared to PAPE*PLA and CON. Additionally, post-test blood lactate levels were significantly lower in the PAPE*TAU condition (p < 0.05), and CMJ performance was significantly better post-exercise (p < 0.05), indicating reduced neuromuscular fatigue. CONCLUSION: In conclusion, the combination of the PAPE protocol with taurine supplementation enhances anaerobic performance, supports neuromuscular function, and promotes metabolic recovery following high-intensity exercise. These findings suggest a synergistic effect that may benefit athletes engaged in explosive and anaerobic sports such as wrestling.
13 May 2026
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