Trial reportPeerJ2024
The effect of complex contrast training with different training frequency on the physical performance of youth soccer players: a randomized study.
Trial report in PeerJ, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 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
8 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Comparative Effects of Training Modalities on Countermovement Jump Performance in Soccer Players: A Systematic Review and Network Meta-Analysis.Journal of sports science & medicine · 2026Pooled it
- Effects of different training on lower limb explosive power in youth soccer players: a systematic review and network meta-analysis.Frontiers in physiology · 2026Pooled it
- Response to Comment on: "Within Session Exercise Sequencing During Programming for Complex Training: Historical Perspectives, Terminology, and Training Considerations".Sports medicine (Auckland, N.Z.) · 2026Article
- Acute effects of foam rolling vs. passive rest following a single bout of complex contrast training.European journal of applied physiology · 2026Article
- The effects of French contrast method on explosive power and speed-related skills in female soccer players: a randomized controlled trial.BMC sports science, medicine & rehabilitation · 2026Article
- Effects of combined resistance and plyometric training modalities on vertical jump and sprint: a systematic review and network meta-analysis.BMC sports science, medicine & rehabilitation · 2026Article
- Shaping Training Load, Technical-Tactical Behaviour, and Well-Being in Football: A Systematic Review.Sports (Basel, Switzerland) · 2025Review
- Effects of a Short-Term Ballistic Training Program on Performance and Strength Deficit in Elite Youth Female Soccer Players.Sports (Basel, Switzerland) · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Complex contrast training (CCT) is potentially an efficient method to improve physical abilities such as muscle strength, power output, speed, agility, are extremely important in developing soccer players of different age categories. Aim: This study aimed to analyze the effects of 6 weeks of CCT program applied in different training frequency (sessions per week) on youth soccer players performance. Methods: Twenty-one youth soccer players (age: 15.3 ± 1.1 years; body mass 64.9 ± 0.7 kg; height 175.4 ± 0.7 cm) were randomized into three groups: a regular pre-season training control group (G0, Results: A statistical difference was identified for the timepoint for the players' CMJ ( Conclusion: The CCT training program with a weekly frequency of 3 days per week is effective in improving free kick speed and CMJ performance in young male soccer players (U-15 and U-17 categories). CCT training programs have the potential to refine an athlete's preparation for competition. However, certain performance tests did not demonstrate substantial enhancements. Consequently, additional investigations are required to ascertain the effectiveness of CCT.
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.