Acta Universitatis Carolinae Kinanthropologica (AUC Kinanthropologica) is an international peer reviewed journal for the publication of research outcomes in the humanities, the social sciences and the natural sciences, as applied to kinathropology. It is a multidisciplinary journal accepting only original unpublished articles in English in the various sub-disciplines and related fields of kinanthropology, such as Anthropology, Anthropomotorics, Sports Pedagogy, Sociology of Sport, Philosophy of Sport, History of Sport, Physiology of Sport And Exercise, Physical Education, Applied Physical Education, Physiotherapy, Human Biomechanics, Psychology of Sport, Sports Training and Coaching, Sport Management, etc. The journal also welcomes interdisciplinary articles. The journal also includes reports of relevant activities and reviews of relevant publications.
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AUC KINANTHROPOLOGICA, Vol 62 No 1 (2026), 78–89
ArticleAssociations between flexibility, aerobic capacity, and training experience among Algerian bodybuilders
Said Yahiaoui, Nadir Gendouzen, Yakoub Bouhantala, Ameur Chafa
DOI: https://doi.org/10.14712/23366052.2026.11
published online: 25. 06. 2026
abstract
This study examined aerobic capacity and flexibility among Algerian bodybuilders and explored their associations with age and training experience. Fifteen male athletes from Batna Province participated in the research. Aerobic capacity was assessed using the Luc Léger 20-m shuttle run test, while trunk flexibility and shoulder mobility were evaluated through the sit-and-reach and back-scratch tests, respectively. Results showed moderate aerobic capacity and generally low to moderate flexibility across the sample. Correlational analyses revealed no statistically significant relationships between VO2max, flexibility, age, or training duration (p > 0.05). Although flexibility displayed a slight tendency to decline with age and to improve with longer training experience, these trends did not reach significance, likely due to the small and homogeneous sample. These findings underscore the importance of integrating structured flexibility and aerobic training into bodybuilding programs to maintain optimal mobility and performance. Future studies employing larger and more diverse samples are recommended to better clarify the relationships among age, training experience, and physical fitness components in bodybuilding populations.
keywords: flexibility; aerobic capacity; bodybuilding; training experience; age
references (31)
1. Alter, M. J. (2004). Science of Flexibility. Champaign, IL: Human Kinetics.
2. Andersen, J. L., & Schjerling, P. (2000). Effect of detraining following resistance training on fiber size and MHC composition in humans. Journal of Physiology, 522(1), 175-185.
3. Behm, D. G., Blazevich, A. J., Kay, A. D., & McHugh, M. (2016). Acute effects of muscle stretching on physical performance, range of motion, and injury incidence in healthy active individuals: a systematic review. Applied Physiology, Nutrition, and Metabolism, 41(1), 1-11. CrossRef PubMed
4. Bird, S. R., Tarpenning, K. M., & Marino, F. E. (2006). Independent and combined effects of liquid carbohydrate/essential amino acid ingestion on hormonal and muscular adaptations following resistance training in eugonadal men. European Journal of Applied Physiology, 97(2), 225-238. CrossRef PubMed
5. Bompa, T. O., & Haff, G. G. (2009). Periodization: Theory and methodology of training. Champaign, IL: Human Kinetics.
6. Bouchard, C., An, P., Rice, T., Skinner, J. S., Wilmore, J. H., Gagnon, J., … & Leon, A. S. (1999). Familial aggregation of VO₂ max response to exercise training. Journal of Applied Physiology, 87(3), 1003-1008. CrossRef PubMed
7. Campos, Y., et al. (2018). Validity of the Léger's test for predicting maximal oxygen uptake in bodybuilders. Journal of Strength and Conditioning Research, 32(5), 1302-1308.
8. Costa, P. B., et al. (2018). The relationship between flexibility and age in young and older adults. Journal of Strength and Conditioning Research, 32(5), 1326-1333.
9. Fleg, J. L., & Cooper, L. S. (1988). Aerobic capacity and ventricular function in older adults. Journal of Gerontology, 43(4), M117-M123.
10. Gajdosik, R. L., & Tippett, S. R. (2000). Regression equations to predict hamstring length. Journal of Orthopaedic & Sports Physical Therapy, 30(1), 19-27.
11. Gomes, T. F., & Santos, E. J. (2018). Effects of years of practice on aerobic capacity and muscle strength in bodybuilders. Journal of Sports Science and Medicine, 17(3), 249-256.
12. Gomes, T. F., & Santos, E. J. (2020). Relationship between years of practice and aerobic capacity in bodybuilders: a systematic review. Medicine and Science in Sports and Exercise, 52(1), 141-148.
13. Granacher, U., Lesinski, M., & Behm, D. G. (2018). Effects of age on flexibility and mobility in older adults: A systematic review. Journal of Aging and Physical Activity, 26(2), 251-273.
14. Hawkins, S. A., Wiswell, R. A., & Stanley, W. C. (2001). Age-related changes in maximal oxygen uptake: A meta-analysis. Medicine and Science in Sports and Exercise, 33(2), 322-331.
15. Helms, E. R., Aragon, A. A., & Fitschen, P. J. (2014). Evidence-based recommendations for natural bodybuilding contest preparation: nutrition and supplementation. Journal of the International Society of Sports Nutrition, 11(1), 20. CrossRef PubMed PubMed Central
16. Kemmler, W., & Engelke, K. (2003). Body composition and muscle strength in young and elderly men and women. Journal of Gerontology: Medical Sciences, 58(10), M833-M839.
17. Kendall, F. P., McCreary, E. K., Provance, P. G., Rodgers, M. M., & Romani, W. A. (2005). Muscles: Testing and function, with posture and pain. Baltimore, MD: Lippincott Williams & Wilkins.
18. Lee, S. C., & Kim, J. H. (2019). Comparison of flexibility and mobility between young and older bodybuilders. Journal of Sports Sciences, 37(12), 1345-1353.
19. Léger, L. A., & Boucher, R. (1980). An indirect continuous running multistage field test: The Université de Montréal track test. European Journal of Applied Physiology and Occupational Physiology, 44(1), 25-35.
20. Magee, D. J. (2014). Orthopedic Physical Assessment. Amsterdam: Elsevier Saunders.
21. Magnusson, S. P., & Renström, P. (2006). The stretching controversy: an update. Journal of Athletic Training, 41(3), 338-345.
22. Norton, L., & Wilson, G. J. (2009). Optimal protein intake to maximize muscle protein synthesis. AgroFood Ind Hitech, 20, 54-57.
23. Park, J. H., & Lee, S. C. (2020). Age-related changes in flexibility and mobility in bodybuilders: A cross-sectional study. International Journal of Sports Physiology and Performance, 15(3), 431-438.
24. Ramsbottom, R., Brewer, J., & Williams, C. (2001). A progressive shuttle run test to estimate maximal oxygen uptake. British Journal of Sports Medicine, 35(5), 346-351.
25. Santos, E. J., & Gomes, T. M. (2018). Flexibility and age: A systematic review. Journal of Strength and Conditioning Research, 32(5), 1231-1238.
26. Santos, E. J., & Gomes, T. F. (2019). Aerobic capacity and muscle strength in bodybuilders: a 5-year follow-up study. Journal of Strength and Conditioning Research, 33(5), 1231-1238.
27. Santos, E. J., et al. (2020). The effects of age on shoulder flexibility in bodybuilders. Journal of Sports Sciences, 38(12), 1353-1360.
28. Simão, R., Lemos, A., Salles, B., Leite, T., Oliveira, É., Rhea, M., & Reis, V. M. (2011). The influence of strength, flexibility, and simultaneous training on flexibility and strength gains. Journal of Strength & Conditioning Research, 25(5), 1333-1338. CrossRef PubMed
29. Vieira, A. F., & Gomes, T. M. (2020). Age-related changes in flexibility and mobility in athletes: A systematic review. European Journal of Applied Physiology, 120(5), 931-941.
30. Westcott, W. L. (2012). Resistance training is medicine: effects of strength training on health. Curr. Sports Med. Rep., 11(4), 209-216. CrossRef PubMed
31. West, D. W., & Abt, G. (2017). The effects of age on maximal oxygen uptake in bodybuilders. Journal of Strength and Conditioning Research, 31(1), 211-216.

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