Trial reportInternational journal of environmental research and public health2020
Effects of Unloaded vs. Ankle-Loaded Plyometric Training on the Physical Fitness of U-17 Male Soccer Players.
Trial report in International journal of environmental research and public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 8 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, 8 syntheses or guidelines pooled it, 29 citations in OpenAlex.
- Effects of different training modalities on lower-limb explosive power, acceleration, 20-m sprint performance, and change-of-direction ability in youth soccer players: a systematic review and network meta-analysis.BMC sports science, medicine & rehabilitation · 2026Pooled it
- Effects of Various Exercise Interventions on Sprint Performance and Jump Height in Soccer Players: A Systematic Review and Network Meta-Analysis.Journal of sports science & medicine · 2026Pooled it
- The effects of plyometric training on adolescent sports performance: a systematic review and meta-analysis.PeerJ · 2026Pooled it
- Effects of Maturation Stage on Physical Fitness in Youth Male Team Sports Players After Plyometric Training: A Systematic Review and Meta-Analysis.Sports medicine - open · 2025Pooled it
- The Effects of Strength, Plyometric and Combined Training on Strength, Power and Speed Characteristics in High-Level, Highly Trained Male Youth Soccer Players: A Systematic Review and Meta-Analysis.Sports medicine (Auckland, N.Z.) · 2024Pooled it
- Effects of diverse resistance training modalities on performance measures in athletes: a network meta-analysis.Frontiers in physiology · 2024Pooled it
- Effectiveness of plyometric training vs. complex training on the explosive power of lower limbs: A Systematic review.Frontiers in physiology · 2022Pooled it
- Effects of Plyometric Jump Training on Balance Performance in Healthy Participants: A Systematic Review With Meta-Analysis.Frontiers in physiology · 2021Pooled it
- Comparison of plyometric repeated sprint and plyometric aerobic training on physical performance in youth soccer players.Scientific reports · 2026Trial
- Soccer Players' Physical Performance After Loaded Plyometric-Jump Training: A Systematic Review.Journal of functional morphology and kinesiology · 2026Review
- Differential effects of plyometric training loads on jump and sprint performance reveal optimal strategies.Scientific reports · 2026Article
- The role of the bone myoregulation reflex in impact-loading activities: a new view of feedback control mechanisms.European journal of applied physiology · 2026Article
- Multifactorial Thresholds of Psychomotor Fatigue in Soccer: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.Journal of human kinetics · 2026Review
- Effects of plyometric and strength training on the physical fitness attributes of male adolescent team sports athletes: a systematic review and meta-analysis.BMC sports science, medicine & rehabilitation · 2025Article
- Stretching exercises for growing children: evaluation of obesity, flexibility, pain and injury of musculoskeletal organs before and one year later.Journal of rural medicine : JRM · 2024Article
- Effects of Combined Horizontal Plyometric and Change of Direction Training on Anaerobic Parameters in Youth Soccer Players.Sports (Basel, Switzerland) · 2023Article
- Effects of Maturation Stage on Sprinting Speed Adaptations to Plyometric Jump Training in Youth Male Team Sports Players: A Systematic Review and Meta-Analysis.Open access journal of sports medicine · 2022Review
- Combined Plyometric and Short Sprint Training in U-15 Male Soccer Players: Effects on Measures of Jump, Speed, Change of Direction, Repeated Sprint, and Balance.Frontiers in physiology · 2022Article
- Acute Effects of Handheld Loading on Standing Broad Jump in Youth Athletes.International journal of environmental research and public health · 2021Article
- Effects of Combined Plyometric and Short Sprints Training on Athletic Performance of Male U19 Soccer Players.Frontiers in psychology · 2021Article
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 at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The aim of this study was to compare the impact of two differing plyometric training programs (loaded plyometrics (with 2.5% of body mass placed above the ankle joint) vs. unloaded plyometrics), performed biweekly for 10 weeks, on the physical fitness of elite junior male soccer players. Participants aged 16.0 ± 0.5 years were randomly assigned between unloaded plyometrics (UP;
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.