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Pablo Pedrero-Valenzuela
Universidad Catolica del Maule
Chile
Ruben Vidal-Espinoza
Universidad Católica Silva Henriquez, Santiago, Chile
Chile
Camilo Urra-Albornoz
Universidad del Bio Bio
Chile
Sergio Valdes-Retamal
Universidad Catolica del Maule
Chile
Benjamin Jorquera-Donoso
Universidad Catolica del Maule
Chile
Luis Felipe Castelli Correia de Campos
Universidad Adventista de Chile
Chile
Marco Cossio-Bolaños
Universidad Católica del Maule
Chile
Rossana Gomez-Campos
Universidad Catolica del Maule
Chile
Vol. 11 No. 4 (2025), Original papers, pages 1-18

DOI:

https://doi.org/10.17979/sportis.2025.11.4.11915
Submitted: 2025-04-03 Published: 2025-10-29
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Abstract

Participation in strength training programs can improve muscle power, speed, and bone health. The objective was to evaluate a medicine ball exercise program to improve muscle strength in adolescents. A quantitative pre-experimental study was developed. The sample consisted of 13 subjects between 15 and 17 years of age, 8 male (62%) and 5 female (38%). Weight, height and waist circumference were evaluated. BMI (kg/m2) and fat mass (kg) were calculated. Maximum strength (dynamometry), endurance strength (biceps curl) and explosive strength (medicine ball throwing) tests were performed. A circuit training intervention with a medicine ball was performed, 8 sessions of 30 minutes, during eight weeks at high intensity. The average age of the adolescents studied was 16.10±0.46 years in males and 16.26±0.98 years in females. After applying the intervention program in males, a significant increase in left maximum hand strength (MPF) was found, with a 4.7 kg/f increase. In women, a significant increase of 15 cm was recorded in the forward medicine ball throw. This study demonstrated that an 8-session medicine ball training intervention generated limited improvements in left-sided FPM performance in men, as well as in forward throwing strength in women. These results suggest that, although the program had some positive impact, its effect was partial and specific according to the type of test and sex of the participants.

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References

American Academy of Pediatrics Council on Sports Medicine and Fitness AAPCSMF., McCambridge, TM., Stricker, PR. (2008). Strength training by children and adolescents. Pediatrics, 121(4),835-40. https://doi.org/10.1542/peds.2007-3790

Bruggisser F, Knaier R, Roth R, Wang W, Qian J, Scheer FAJL. (2023). Best Time of Day for Strength and Endurance Training to Improve Health and Performance? A Systematic Review with Meta-analysis. Sports Med Open ;9(1):34. https://doi.org/10.1186/s40798-023-00577-5

Cheng, S., & Wiklund, P. (2018). The effects of muscle mass and muscle quality on cardio-metabolic risk in peripubertal girls: a longitudinal study from childhood to early adulthood. International journal of obesity, 42(4), 648-654. https://doi.org/10.1038/ijo.2017.267.

Cohen, J. (1992). A power primer. Psychol Bull; 112(1):155-9. https://doi.org/10.1037//0033-2909.112.1.155

Cossio-Bolaños, M., de Arruda, M., Sulla Torres, J., Urra Albornoz, C., & Gómez Campos, R. (2017). Desarrollo de ecuaciones y propuesta de valores referenciales para estimar la masa grasa de niños y adolescentes chilenos. Archivos Argentinos de Pediatría, 115(5), 453-461. https://doi.org/10.5546/aap.2017.453

Cox, A., Fairclough, S. J., Kosteli, M. C., & Noonan, R. J. (2020). Efficacy of school-based interventions for improving muscular fitness outcomes in adolescent boys: A systematic review and meta-analysis. Sports Medicine, 50, 543-560. https://doi.org/10.1007/s40279-019-01215-5.

Duncombe, S. L., Barker, A. R., Bond, B., Earle, R., Varley-Campbell, J., Vlachopoulos, D., Walker, J. L., Weston, K. L., & Stylianou, M. (2022). School-based high-intensity interval training programs in children and adolescents: A systematic review and meta-analysis. PloS one, 17(5), e0266427. https://doi.org/10.1371/journal.pone.0266427.

Faigenbaum, A., & Mediate, P. (2006). Effects of Medicine ball training on physical fitness in high school physical education students. The Physical Educator, 63(3), 161-168

Faigenbaum, A. D., Kraemer, W. J., Blimkie, C. J., Jeffreys, I., Micheli, L. J., Nitka, M., & Rowland, T. W. (2009). Youth resistance training: updated position statement paper from the national strength and conditioning association. The Journal of Strength y Conditioning Research, 23, S60-S79. https://doi.org/10.1519/JSC.0b013e31819df407

Faigenbaum AD, Kang J, Ratamess NA, Farrell A, Ellis N, Vought I, Bush J. (2018). Acute Cardiometabolic Responses to Medicine Ball Interval Training in Children. Int J Exerc Sci; 11(4):886-899. https://doi.org/10.70252/WFYJ1596

Hughes, D. C., Ellefsen, S., & Baar, K. (2018). Adaptations to Endurance and Strength Training. Cold Spring Harbor perspectives in medicine, 8(6), a029769. https://doi.org/10.1101/cshperspect.a029769

Jones, M. A., Hitchen, P. J., & Stratton, G. (2000). The importance of considering biological maturity when assessing physical fitness measures in girls and boys aged 10 to 16 years. Annals of human biology, 27(1), 57–65. https://doi.org/10.1080/030144600282389

Ignjatovic, A. M., Markovic, Z. M., & Radovanovic, D. S. (2012). Effects of 12-week medicine ball training on muscle strength and power in young female handball players. The Journal of Strength y Conditioning Research, 26(8), 2166-2173. https://doi.org/10.1519/JSC.0b013e31823c477e

Koźlenia, D., Popowczak, M., Szafraniec, R., Alvarez, C., & Domaradzki, J. (2024). Changes in Muscle Mass and Strength in Adolescents Following High-Intensity Functional Training with Bodyweight Resistance Exercises in Physical Education Lessons. Journal of Clinical Medicine, 13(12), 3400. https://doi.org/10.3390/jcm13123400

Kurnaz, M., Silva, A.F., Matos, S., & Flôres, F. (2024). The value levels of high school students regarding physical education and sports activities. Sportis Sci J, 10(3), 530-546. https://doi.org/10.17979/sportis.2024.10.3.10710

Larsen, M. N., Nielsen, C. M., Ørntoft, C., Randers, M. B., Helge, E. W., Madsen, M., ... & Krustrup, P. (2017). Fitness Effects of 10‐Month Frequent Low‐Volume Ball Game Training or Interval Running for 8–10‐Year‐Old School Children. BioMed Research International, 2017(1), 2719752. https://doi.org/10.1155/2017/2719752.

Legido, J. C. A., Segovia, J. C., & Ballesteros, J. M. (1996). Valoración de la condición física por medio de test. Ediciones Pedagógicas.

Leite, N., Tadiotto, M. C., de Moraes Junior, F. B., de Menezes-Junior, F. J., Corazza, P. R., da Silva, L. R., ... & Coelho-e-Silva, M. J. (2024). Examining the mediating role of muscle quantity in adolescents: associations with adiposity, cardiorespiratory fitness, muscular fitness, and cardiometabolic risk factors. Scientific Reports, 14(1), 12030. https://doi.org/10.1038/s41598-024-61805-w

Malina, R. M., Bouchard, C., & Bar-Or, O. (2004). Growth, Maturation and Physical Activity (2nd ed.). Champaign, IL: Human Kinetics.

Malm C, Jakobsson J, Isaksson A. (2019). Physical Activity and Sports-Real Health Benefits: A Review with Insight into the Public Health of Sweden. Sports (Basel);7(5):127. https://doi.org/10.3390/sports7050127

Moore SA, Arnold KT, Beidas RS, Mendelson T. (2021). Specifying and Reporting Implementation Strategies Used in a School-Based Prevention Efficacy Trial. Implement Res Pract ;2:26334895211047841. https://doi.org/10.1177/26334895211047841

Noone, J., Mucinski, J. M., DeLany, J. P., Sparks, L. M., & Goodpaster, B. H. (2024). Understanding the variation in exercise responses to guide personalized physical activity prescriptions. Cell metabolism, 36(4), 702–724. https://doi.org/10.1016/j.cmet.2023.12.025 .

Rikli R. E, & Jones C.J. (2013). Development and validation of criterion-referenced clinically relevant fitness standards for maintaining physical independence in later years. Gerontologist; 53(2):255-67. https://doi.org/10.1093/geront/gns071

Rojos-Ramos, J.; Espinosa-Mogollón, L.; Galán-Arroyo, C. (2024). Asociación entre la importancia de la Educación Física y la ansiedad físico social en España. Sportis Sci J, 10(3), 487-501. https://doi.org/10.17979/sportis.2024.10.3.10694

Romero-Dapueto, C., Mahn, J., Cavada, G., Daza, R., Ulloa, V., & Antúnez, M. (2019). Estandarización de la fuerza de prensión manual en adultos chilenos sanos mayores de 20 años. Revista médica de Chile, 147(6), 741-750. https://doi.org/10.4067/S0034-98872019000600741

Ross, W. D., Marfell-Jones, M., & Clarys-Robion, J. P. (1983). Kinanthropometry. In Physiological testing of the elite athlete. Chap. 6 (pp. 75-115). Mutual Press, Ottawa.

Sánchez Pastor, A., García-Sánchez, C., Marquina Nieto, M., & de la Rubia, A. (2023). Influence of strength training variables on neuromuscular and morphological adaptations in prepubertal children: a systematic review. International Journal of Environmental Research and Public Health, 20(6), 4833. https://doi.org/10.3390/ijerph20064833

Szymanski, D. J., Szymanski, J. M., Bradford, T. J., Schade, R. L., & Pascoe, D. D. (2007). Effect of twelve weeks of medicine ball training on high school baseball players. The Journal of Strength y Conditioning Research, 21(3), 894-901. https://doi.org/10.1519/R-18415.1

Tibana, R. A., Prestes, J., da Cunha Nascimento, D., Martins, O. V., De Santana, F. S., & Balsamo, S. (2012). Higher muscle performance in adolescents compared with adults after a resistance training session with different rest intervals. The Journal of Strength y Conditioning Research, 26(4), 1027-1032. https://doi.org/10.1519/JSC.0b013e31822dfefb

Trajković, N., Madić, D., Andrašić, S., Milanović, Z., & Radanović, D. (2017). Effects of medicine ball training on physical fitness in primary school children. Facta Universitatis, Series: Physical Education and Sport, 15(1), 185-193.

Tumkur Anil Kumar, N., Oliver, J. L., Lloyd, R. S., Pedley, J. S., & Radnor, J. M. (2021). The Influence of Growth, Maturation and Resistance Training on Muscle-Tendon and Neuromuscular Adaptations: A Narrative Review. Sports (Basel, Switzerland), 9(5), 59. https://doi.org/10.3390/sports9050059 .