Effects of increased training load on physical and subjective parameters in Soccer Athletes: A longitudinal study

Authors

DOI:

https://doi.org/10.62827/fb.v26i5.1087

Keywords:

Exertion; Soccer; Exercise Therapy.

Abstract

Introduction: Soccer is a high-demand physical activity where workload monitoring is essential to optimize performance and prevent injuries. Objective: This study investigated the effects of a 90-day training program on workload parameters and perceived exertion in adolescent soccer players. Methods: Twelve players from a soccer team in São Paulo, Brazil (age: 17 ± 0.11 years; height: 175.6 ± 1.59 cm) participated in the study. The training program included weightlifting sessions, small-sided field training, and team games, conducted five days a week with daily training sessions lasting approximately 120 minutes, always in the morning from 10 a.m. to 12 p.m. The Borg Scale, training duration, acute load, chronic load, acute: chronic workload ratio (ACWR), monotony, and strain were assessed during the pre-training (PRE) and post-training (POST) periods. Results: No significant differences were observed in the Borg Scale between the initial and final periods, nor in the ACWR. However, there was a significant increase in training duration (32.78%), acute load (156%), and the monotony (116%) and strain (345%) indicators by the end of the period. Additionally, chronic load showed a significant increase in week 9 compared to weeks 5 and 6. These findings reflect the progression of the training program and its implications on load variability and the accumulated demand imposed on the athletes. Conclusion: Despite the substantial increase in workload, perceived exertion remained stable, suggesting potential physiological adaptations to the training. However, the increases in monotony and strain emphasize the importance of proper load management to prevent overload and ensure recovery. These findings reinforce the need for continuous monitoring in soccer training programs.

Author Biographies

  • Maurilio Sampaio, Sampa Sports Treinamento e Fisioterapia Desportiva

    Sampa Sports Treinamento e Fisioterapia Desportiva, São Paulo, SP, Brasil

  • Ricardo Aparecido Baptista Nucci, Hospital Sírio Libanês

    Hospital Sírio-Libanês (HSL), São Paulo, SP, Brasil

References

Rodríguez MS, Ortega Alvarez AM, Arango-Vasquez L. Worldwide trends in the scientific production on soccer players market value, a bibliometric analysis using bibliometrix R-tool. TPM. 2022;28(5):415–40. doi: 10.1108/TPM-02-2022-0015

Plakias S, Tsatalas T, Mina MA, Kokkotis C, Kellis E, Giakas G. A Bibliometric Analysis of Soccer Biomechanics. App Scienc. 2024;14(15):6430. doi: 10.3390/app14156430

Colosio AL, Lievens M, Pogliaghi S, Bourgois JG, Boone J. Heart rate-index estimates aerobic metabolism in professional soccer players. J Scienc Med Sport. 2020;23(12):1208–14. doi: 10.1016/j.jsams.2020.04.015

Hallé Petiot G, Aquino R, Silva DCD, Barreira DV, Raab M. Contrasting Learning Psychology Theories Applied to the Teaching-Learning-Training Process of Tactics in Soccer. Front Psychol. 2021;12:637085. doi: 10.3389/fpsyg.2021.637085.

Malone S, Owen A, Newton M, Mendes B, Collins KD, Gabbett TJ. The acute:chonic workload ratio in relation to injury risk in professional soccer. J Scienc Med Sport. 2017;20(6):561–5. doi: 10.1016/j.jsams.2016.10.014

Ries AL. Minimally Clinically Important Difference for the UCSD Shortness of Breath Questionnaire, Borg Scale, and Visual Analog Scale. COPD: J Chron Obstruct Pulmon Dis. 2005;2(1):105–10. doi: 10.1081/COPD-200050655

Naidu SA, Fanchini M, Cox A, Smeaton J, Hopkins WG, Serpiello FR. Validity of Session Rating of Perceived Exertion Assessed via the CR100 Scale to Track Internal Load in Elite Youth Football Players. Int J Sports Physiol Performance. 2019;14(3):403–6. doi: 10.1123/ijspp.2018-0432

Nobari H, Aquino R, Clemente FM, Khalafi M, Adsuar JC, Pérez-Gómez J. Description of acute and chronic load, training monotony and strain over a season and its relationships with well-being status: A study in elite under-16 soccer players. Physiol Behavior. 2020;225:113117. doi: 10.1016/j.physbeh.2020.113117

Onody RN, De Castro PA. Complex network study of Brazilian soccer players. Phys Rev E. 2004;70(3):037103. doi: 10.1103/PhysRevE.70.037103

Ali A. Measuring soccer skill performance: a review. Scandinavian Med Sci Sports. abril de 2011;21(2):170–83. doi: 10.1111/j.1600-0838.2010.01256.x

Hoff J, Helgerud J. Endurance and Strength Training for Soccer Players: Physiological Considerations. Sports Medicine. 2004;34(3):165–80. doi: 10.2165/00007256-200434030-00003

Clemente FM, Afonso J, Castillo D, Arcos AL, Silva AF, Sarmento H. The effects of small-sided soccer games on tactical behavior and collective dynamics: A systematic review. Chaos, Solitons Fractals. 2020;134:109710. doi: 10.1016/j.chaos.2020.109710

Published

2025-10-20

How to Cite

Effects of increased training load on physical and subjective parameters in Soccer Athletes: A longitudinal study. (2025). Fisioterapia Brasil, 26(5), 2408-2416. https://doi.org/10.62827/fb.v26i5.1087