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Field Position-Related Variations in Body Mass, Postural Control, and Isokinetic Strength in Portuguese Professional
João Rocha1, Hélder Cruz1, José Eduardo Teixeira1,2,3,4
1Department of Sports and Expressions, Polytechnic of Guarda, 6300-559 Guarda, Portugal.
Journal of Functional Morphology and Kinesiology
|November 24, 2025
Summary
Professional football players show similar physical and functional profiles across positions. Individualized training may optimize performance and reduce injury risk, despite minor differences in right leg extension strength.
Area of Science:
- Sports Science
- Biomechanics
- Human Movement
Background:
- Assessing football players requires a holistic approach combining body composition, dynamic postural control, and isokinetic strength.
- Understanding physical and functional variations across playing positions is crucial for player development and injury prevention.
Purpose of the Study:
- To analyze field position-related variations in the physical and functional profiles of male football players.
- To investigate differences in body composition, dynamic postural control, and isokinetic lower limb strength among various playing positions.
Main Methods:
- 23 professional male football players from diverse positions were assessed.
- Body composition, dynamic postural control (Y-Balance test lower quarter), and isokinetic lower limb strength (peak torque) were measured.
- Statistical analyses included Mann-Whitney U tests and correlation analysis.
Main Results:
- Significant differences were observed only in the peak torque of right leg extensors.
- No significant variations were found in body mass, dynamic balance, left-limb strength, or hamstring-to-quadriceps ratios across positions.
- Moderate-to-strong correlations existed between symmetrical measures and anthropometric/strength variables, but without position-specific patterns.
Conclusions:
- Professional football players exhibit largely similar physical and functional profiles irrespective of playing position.
- Individualized training strategies may enhance performance and mitigate injury risk.
- Further research with larger, diverse cohorts is recommended.
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