Dataset Information

High-dose short-term creatine supplementation without beneficial effects in professional cyclists: a randomized controlled trial.

ABSTRACT:

Background

Growing evidence supports the ergogenic effects of creatine supplementation on muscle power/strength, but its effects on endurance performance remain unclear. We assessed the effects of high-dose short-term creatine supplementation in professional cyclists during a training camp.

Methods

The study followed a double-blind, randomized parallel design. Twenty-three professional U23 cyclists (19 ± 1 years, maximum oxygen uptake: 73.0 ± 4.6 mL/kg/min) participated in a 6-day training camp. Participants were randomized to consume daily either a recovery drink (containing carbohydrates and protein) with a 20-g creatine supplement (creatine group, n = 11) or just the recovery drink (placebo group, n = 12). Training loads and dietary intake were monitored, and indicators of fatigue/recovery (Hooper index, countermovement jump height), body composition, and performance (10-second sprint, 3-, 6-, and 12-minute time trials, respectively, as well as critical power and W') were assessed as study outcomes.

Results

The training camp resulted in a significant (p < 0.001) increase of training loads (+50% for total training time and + 61% for training stress score, compared with the preceding month) that in turn induced an increase in fatigue indicators (significant time effect [p < 0.001] for delayed-onset muscle soreness, fatigue, and total Hooper index) and a decrease in performance (significant time effect [p = 0.020] for critical power, which decreased by -3.8%). However, no significant group-by-time interaction effect was found for any of the study outcomes (all p > 0.05).

Conclusions

High-dose short-term creatine supplementation seems to exert no consistent beneficial effects on recovery, body composition or performance indicators during a strenuous training period in professional cyclists.

SUBMITTER: Barranco-Gil D

PROVIDER: S-EPMC11018046 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature

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Publications

High-dose short-term creatine supplementation without beneficial effects in professional cyclists: a randomized controlled trial.

Barranco-Gil David D Alejo Lidia B LB Revuelta Carlos C Górriz Miguel M Pagola Itziar I Ozcoidi Laureano M LM Lucia Alejandro A Valenzuela Pedro L PL

Journal of the International Society of Sports Nutrition 20240412 1

<h4>Background</h4>Growing evidence supports the ergogenic effects of creatine supplementation on muscle power/strength, but its effects on endurance performance remain unclear. We assessed the effects of high-dose short-term creatine supplementation in professional cyclists during a training camp.<h4>Methods</h4>The study followed a double-blind, randomized parallel design. Twenty-three professional U23 cyclists (19 ± 1 years, maximum oxygen uptake: 73.0 ± 4.6 mL/kg/min) participated in a 6-day ...[more]

PMID: 38606895

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Dataset Information

High-dose short-term creatine supplementation without beneficial effects in professional cyclists: a randomized controlled trial.

Background

Methods

Results

Conclusions

Publications

High-dose short-term creatine supplementation without beneficial effects in professional cyclists: a randomized controlled trial.

Similar Datasets

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