ArticleBMC sports science, medicine & rehabilitation2021
Weight cycling in combat sports: revisiting 25 years of scientific evidence.
Article in BMC sports science, medicine & rehabilitation, 2021. 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.
- Pooled it
- Comparison of concurrent, resistance, or aerobic training on body fat loss: a systematic review and meta-analysis.Journal of the International Society of Sports Nutrition · 2025Pooled it
- Effects of Different Rapid Weight Loss Strategies and Percentages on Performance-Related Parameters in Combat Sports: An Updated Systematic Review.International journal of environmental research and public health · 2023Pooled it
- Rehydration failure despite rapid weight regain in elite para judo athletes with visual impairment: a descriptive repeated-measures study.BMC sports science, medicine & rehabilitation · 2026Article
- Acute weight cycling and hydration status in elite kickboxers: a repeated-measures field study.BMC sports science, medicine & rehabilitation · 2026Article
- Differences in weight loss practices and perceptions between medalists and non-medalists in national-level adolescent Sanda athletes.PloS one · 2026Article
- Anthropometric Characteristics and Body Composition Changes in a Five-Time Olympic Champion in Greco-Roman Wrestling: A Longitudinal Case Study Towards the Paris 2024 Olympic Games.Journal of functional morphology and kinesiology · 2025Article
- Getting small to feel big: the psychology of weight cutting in combat sports.Frontiers in sports and active living · 2025Review
- An alternative structured weight management protocol to rapid weight loss in mixed martial arts: a prospective interventional study of pre-competition weight management strategies in professional athletes.Frontiers in nutrition · 2025Article
- Rapid Weight Changes and Competitive Outcomes in Muay Thai and Mixed Martial Arts: A 14-Month Study of 24 Combat Sports Events.Sports (Basel, Switzerland) · 2024Article
- Review
- A scoping review of rapid weight loss in judo athletes: prevalence, magnitude, effects on performance, risks, and recommendations.Physical activity and nutrition · 2024Article
- Prevalence of reducing carbohydrate intake and fasted training in elite endurance athletes and association with bone injury.European journal of sport science · 2024Article
- Physiological Perturbations in Combat Sports: Weight Cycling and Metabolic Function-A Narrative Review.Metabolites · 2024Review
- Premature Death in Bodybuilders: What Do We Know?Sports medicine (Auckland, N.Z.) · 2023Article
- Patterns of weight cycling in youth Olympic combat sports: a systematic review.Journal of eating disorders · 2022Review
- Rapid Weight Loss Practices in Grapplers Competing in Combat Sports.Frontiers in physiology · 2022Article
- Psychological Distress in Elite Sambo and Recreational Athletes.Frontiers in psychology · 2022Article
- Disturbing Weight Cutting Behaviors in Young Combat Sports Athletes: A Cause for Concern.Frontiers in nutrition · 2022Article
- Differential Risks of the Duration and Degree of Weight Control on Bone Health and Menstruation in Female Athletes.Frontiers in nutrition · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
Abstract
backgroundAs combat sports are classified by body mass, many athletes engage in rapid weight loss (RWL) prior to competition so they can gain an advantage over lighter opponents. Following the weigh-in, athletes engage in rapid weight gain (RWG), whereby some athletes have been able to compete up to three weight categories greater than the official division weighed in at.
resultsAlthough the impact of weight cycling on performance remains equivocal, robust scientific evidence indicates serious acute and chronic negative consequences on physiological and health-related parameters. Still, weight cycling remains highly prevalent in combat sports, and interventions to limit or stop this cultural norm are recommended.
conclusionsWeigh-ins for combat sports should be transitioned to take place closer to the start of competition. This reduced time and access to engage in RWG will cut down, if not completely prevent, weight cycling. These rule changes that aim to benefit athlete's health and promote fairness must be made at the international level, which will promote them at those levels below, as well, given qualification protocols.
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.