Trial reportNutrients2020
The Effects of Long-Term Magnesium Creatine Chelate Supplementation on Repeated Sprint Ability (RAST) in Elite Soccer Players.
Trial report in Nutrients, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 3 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
20 citing papers in PubMed, 3 syntheses or guidelines pooled it, 26 citations in OpenAlex.
- Creatine supplementation in soccer players: a systematic review.Journal of the International Society of Sports Nutrition · 2026Pooled it
- Effects of different dietary supplements on athletic performance in soccer players: a systematic review and network meta-analysis.Journal of the International Society of Sports Nutrition · 2025Pooled it
- Effects of dietary supplements on athletic performance in elite soccer players: a systematic review.Journal of the International Society of Sports Nutrition · 2023Pooled it
- Synergistic effects of creatine, carbs, protein on repeated sprint performance.Scientific reports · 2026Trial
- Trial
- Combined Impact of Creatine, Caffeine, and Variable Resistance on Repeated Sprint Ability in Young Soccer Players.Nutrients · 2024Trial
- Effects of a Low Dose of Orally Administered Creatine Monohydrate on Post-Fatigue Muscle Power in Young Soccer Players.Nutrients · 2024Trial
- Effects of Oral Creatine Supplementation on Power Output during Repeated Treadmill Sprinting.Nutrients · 2022Trial
- Mechanism-based nutritional strategies for performance and recovery in soccer players: a qualitative research synthesis.Journal of the International Society of Sports Nutrition · 2026Review
- Short-term detraining in semi-professional male football players: impact of a 5-day mid-season break on performance - an observational study.BMC sports science, medicine & rehabilitation · 2026Article
- Effects of Acute Citrulline Malate Supplementation on Repeated 100 m Sprint Performance in Trained Sprinters: A Randomized Crossover Study.Sports (Basel, Switzerland) · 2026Article
- From Science to Dressing Room: Dietary Supplements for Elite Soccer Performance.Journal of functional morphology and kinesiology · 2025Review
- The Importance of Vitamin D and Magnesium in Athletes.Nutrients · 2025Review
- Review
- Supplement Consumption by Elite Soccer Players: Differences by Competitive Level, Playing Position, and Sex.Healthcare (Basel, Switzerland) · 2024Article
- The relationships of serum vitamin D concentration with linear speed and change of direction performance in soccer players.Frontiers in nutrition · 2024Article
- The Integral Role of Magnesium in Muscle Integrity and Aging: A Comprehensive Review.Nutrients · 2023Review
- Effects of short bout small-sided game training on acid-based balance markers in youth male soccer players.Scientific reports · 2023Article
- Article
- Bioavailability, Efficacy, Safety, and Regulatory Status of Creatine and Related Compounds: A Critical Review.Nutrients · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimThe aim of the study was to evaluate the effects of 16 weeks of a low dose of magnesium creatine chelate supplementation on repeated sprint ability test (RAST) results in elite soccer players. MATERIALS: Twenty well-trained soccer players participated in the study. The players were divided randomly into two groups: the supplemented group (SG = 10) and placebo group (PG = 10). Out of the 20 subjects selected for the study, 16 (SG = 8, PG = 8) completed the entire experiment. The SG ingested a single dose of 5500 mg of magnesium creatine chelate (MgCr-C), in 4 capsules per day, which was 0.07 g/kg/d. The PG received an identical 4 capsules containing corn starch. Before and after the study, the RAST was performed. In the RAST, total time (TT), first and sixth 35 m sprint length (s), average power (AP) and max power (MP) were measured. Additionally, before and after the test, lactate LA (mmol/L) and acid-base equilibrium pH (-log(H
resultsAfter the study, significantly better results in TT, AP and MP were observed in the SG. No significant changes in the RAST results were observed in the PG. After the study, significant changes in the first 35 m sprint, as well as the sixth 35 m sprint results were registered in the SG, while insignificant changes occurred in the PG. A significantly higher creatinine concentration was observed. Also, a higher post-RAST concentration of LA, HCO
conclusionsThe long timeframe, i.e., 16 weeks, of the low dose of magnesium creatine chelate supplementation improved the RAST results in the SG. Despite the long period of MgCr-C supplementation, in the end of the study, the creatinine level in the SG reached higher but still reference values.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.