ArticleBMC sports science, medicine & rehabilitation2026
The effects of French contrast method on explosive power and speed-related skills in female soccer players: a randomized controlled trial.
Article in BMC sports science, medicine & rehabilitation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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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.
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1 citing paper in PubMed.
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Authors and funding
7 authors.
Funding
Abstract
backgroundThe purpose of this study was to examine whether the addition of a 6-week French Contrast Method (FCM) to routine soccer training affects agility, vertical jump height and 30-m sprint performance in female soccer players.
methodsA pretest–posttest control-group design was used. Twenty-four female soccer players (≥ 3 years of playing experience; regular training) participated. The experimental group performed a 6-week FCM program in addition to routine soccer training, while the control group continued routine soccer training only. Agility, vertical jump and 30-m sprint tests were administered at baseline and post-intervention. Within the scope of the study analyses, the primary outcomes (agility, vertical jump, and sprint performance) were derived from within-group pretest–posttest comparisons, whereas the secondary outcomes were obtained from findings related to the participants’ descriptive characteristics.
resultThe group × time interaction was found to be significant in the Illinois Agility Test (F = 16.813, p = 0.0004, ηp² = 0.433). Performance time decreased from 18.44 ± 0.59 s to 17.09 ± 0.36 s (Δ = −1.35 s) in the experimental group, while the change was limited in the control group (Δ = −0.22 s); the mean difference between groups was − 1.13 s (95% CI: −1.54 to − 0.72). A significant group × time interaction was also detected in vertical jump performance (F = 12.415, p = 0.002, ηp² = 0.361), with an increase of + 3.31 cm in the experimental group and + 0.77 cm in the control group (between-group difference: +2.54 cm; 95% CI: −0.64 to 5.72). In contrast, the group × time interaction was not significant for the 30 m sprint performance (F = 0.869, p = 0.361, ηp² = 0.038).
conclusionThese results indicate that the FCM training program is effective in improving female soccer players’ agility and vertical jump performance, but does not create a significant difference between groups in 30 m sprint performance. These findings not only extend the scientific literature but also provide actionable strategies for coaches and practitioners.
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