1. Ali, A. M., Alkhamees, A. A., Hori, H., Kim, Y., & Kunugi, H. (2021). The Depression Anxiety Stress Scale 21: Development and Validation of the Depression Anxiety Stress Scale 8-Item in Psychiatric Patients and the General Public for Easier Mental Health Measurement in a Post COVID-19 World. International Journal of Environmental Research & Public Health, 18(19), 10142. https://doi.org/10.3390/ijerph181910142
2. Andarge, E., Trevethan, R., & Fikadu, T. (2021). Assessing the Physical Activity Questionnaire for Adolescents (PAQ-A): Specific and General Insights from an Ethiopian Context. BioMed Research International, 2021, 5511728. https://doi.org/10.1155/2021/5511728
3. Bagheri, S. (2025). Relationship between Mindfulness and Competitive Anxiety among Athletic High-School Students: Mediating Role of Emotion Regulation. Physical Activity in Children, 2(1), 49-54. https://doi.org/10.22034/pach.2025.528401.1052
4. Batista, M. B., de Freitas, M. C. M., Romanzini, C. L. P., Barbosa, C. C. L., Shigaki, G. B., Fernandes, R. A., Romanzini, M., & Ronque, E. R. V. (2024). Sports participation in childhood and adolescence and physical activity intensity in adulthood. PloS One, 19(5), e0299604. https://doi.org/10.1371/journal.pone.0299604
5. Bengtsson, D., Svensson, J., Wiman, V., Stenling, A., Lundkvist, E., & Ivarsson, A. (2025). Health-related outcomes of youth sport participation: a systematic review and meta-analysis. The International Journal of Behavioral Nutrition & Physical Activity, 22(1), 89. https://doi.org/10.1186/s12966-025-01792-x
6. Deng, Y., Li, X., Huang, J., Liang, X., Sit, C. H. P., & Li, C. (2025). School Factors Associated with Physical Activity Participation in Children and Adolescents with Disabilities: A Systematic Review. Adapted Physical Activity Quarterly, 42(3), 401–422. https://doi.org/10.1123/apaq.2024-0172
7. Droutman, V., Golub, I., Oganesyan, A., & Read, S. (2018). Development and initial validation of the Adolescent and Adult Mindfulness Scale (AAMS). Personality & Individual Differences, 123, 34–43. https://doi.org/10.1016/j.paid.2017.10.037
8. Fan, L., & Cui, F. (2024). Mindfulness, self-efficacy, and self-regulation as predictors of psychological well-being in EFL learners. Frontiers in Psychology, 15, 1332002. https://doi.org/10.3389/fpsyg.2024.1332002
9. Fernández Solá, P. A., Watkins, J. M., Grube, A., Greeven, S. J., Dutta, S., Coble, C. J., Evanovich, J. M., Martinez Kercher, V. M., Whitley, M. A., & Kercher, K. A. (2024). Contribution of youth sport participation to physical activity levels and cardiovascular disease risk factors in 5-year-old to 14-year-old children: a study protocol for systematic review and meta-analysis. BMJ Open, 14(5), e081524. https://doi.org/10.1136/bmjopen-2023-081524
10. Fossli, K., & Lorentzen, C. A. N. (2025). General Self-Efficacy as a Mediator of Physical Activity's Impact on Well-Being Among Norwegian Adolescents: A Gender and Age Perspective. Behavioral Sciences, 15(9), 1239. https://doi.org/10.3390/bs15091239
11. Fu, L., Burns, R. D., Zhe, S., & Bai, Y. (2024). What explains adolescents' physical activity and sports participation during the COVID-19 pandemic? - an interpretable machine learning approach. Journal of Sports Sciences, 42(17), 1651–1663. https://doi.org/10.1080/02640414.2024.2404783
12. García-Hermoso, A., López-Gil, J. F., & Ezzatvar, Y. (2025). Tracking of physical activity and sport from childhood and adolescence to adulthood: a systematic review and meta-analysis. Translational Pediatrics, 14(6), 1117–1128. https://doi.org/10.21037/tp-2025-89
13. Guthold, R., Stevens, G. A., Riley, L. M., & Bull, F. C. (2020). Global trends in insufficient physical activity among adolescents: a pooled analysis of 298 population-based surveys with 1·6 million participants. The Lancet. Child & Adolescent Health, 4(1), 23–35. https://doi.org/10.1016/S2352-4642(19)30323-2
14. Hashemi, S. (2024). The Effects of Twelve-Weeks of Aerobic Exercise on Body Composition, Physical Fitness and Happiness among Obese Adolescents. Physical Activity in Children, 1(1), 81-88. https://doi.org/10.61186/pach.2024.472521.1024
15. Haywood, S., Garbett, K. M., Craddock, N., Hayes, C., Saraswati, L. A., Nasution, K., Medise, B. E., Vitoratou, S., & Diedrichs, P. C. (2024). Cultural adaptation and validation of the Positive and Negative Affect Schedule for Children (PANAS-C) among Indonesian adolescents. BMC Psychology, 12(1), 703. https://doi.org/10.1186/s40359-024-02209-3
16. Khanbeiki, A. (2024). The Effects of Mindfulness Training in the Physical Education on Intention to Physical Activity, Mental Health and Academic Performance among High-School Students. Physical Activity in Children, 1(1), 68-73. https://doi.org/10.61186/pach.2024.470015.1022
17. Knell, G., Yockey, A., Brayton, R. P., Johnson, A. M., Ellis, H. B., & Wilson, P. L. (2024). Temporal Trends in Single- and Multiple-Sports Team Participation Among Adolescents in the United States: Analysis Using the Youth Risk Behavior Surveillance System, 1999-2019. Orthopaedic Journal of Sports Medicine, 12(11), 23259671241279851. https://doi.org/10.1177/23259671241279851
18. Kolunsarka, I., Stodden, D., Gråstèn, A., Huhtiniemi, M., & Jaakkola, T. (2024). The associations between organized sport participation and physical fitness and weight status development during adolescence. Journal of Science & Medicine in Sport, 27(12), 863–868. https://doi.org/10.1016/j.jsams.2024.07.013
19. Lee, E. Y., Jayawardena, R., Park, S., Jeon, J. Y., Kim, Y. S., & Tremblay, M. S. (2025). Global trends in importance of 24-hour movement behaviors to pediatric health: implications for South Korea. Clinical & Experimental Pediatrics, 68(1), 16–29. https://doi.org/10.3345/cep.2024.00178
20. Li, H., Zhang, W., & Yan, J. (2024). Physical activity and sedentary behavior among school-going adolescents in low- and middle-income countries: insights from the global school-based health survey. PeerJ, 12, e17097. https://doi.org/10.7717/peerj.17097
21. Liang, Y., Zhu, X., Yang, J. H., Wang, F., Zhang, D., Yang, X., Chen, S., & Liu, Y. (2025). Associations of different types of physical activity and sedentary behavior with self-rated health in children and adolescents: a systematic review of research from 2010 to 2024. The International Journal of Behavioral Nutrition & Physical Activity, 22(1), 48. https://doi.org/10.1186/s12966-025-01747-2
22. McAuley, E., & Gill, D. (1983). Reliability and Validity of the Physical Self-Efficacy Scale in a Competitive Sport Setting. Journal of Sport Psychology, 5, 410. https://doi.org/10.1123/jsp.5.4.410
23. Niu, L., Zhang, X., & Ma, Y. (2025). Effects of physical activity, social capital on positive emotions in older adults-A study based on data from the 2022 CFPS survey. Frontiers in Psychology, 16, 1554741. https://doi.org/10.3389/fpsyg.2025.1554741
24. Rafiee, S. (2024). The Effects of Selected Training Exercises on Balance Performance, Physical Self-Concept and Self-Esteem of Primary School Male Students with Developmental Coordination Disorders. Physical Activity in Children, 1(2), 43-48. https://doi.org/10.61186/pach.2024.484106.1032
25. Rogowska, A. M., & Tataruch, R. (2024). The relationship between mindfulness and athletes' mental skills may be explained by emotion regulation and self-regulation. BMC Sports Science, Medicine & Rehabilitation, 16(1), 68. https://doi.org/10.1186/s13102-024-00863-z
26. Sadeghi Pour, N. (2024). Relationships between Mental Toughness with Academic and Sport Performance in Athletic Students: Mediating Role of Mindfulness and Self-efficacy. Physical Activity in Children, 1(2), 21-28. https://doi.org/10.61186/PACH.2024.480579.1027
27. Sañudo, B., Sánchez-Oliver, A. J., Fernández-Gavira, J., Gaser, D., Stöcker, N., Peralta, M., Marques, A., Papakonstantinou, S., Nicolini, C., & Sitzberger, C. (2024). Physical and Psychosocial Benefits of Sports Participation Among Children and Adolescents with Chronic Diseases: A Systematic Review. Sports Medicine-Open, 10(1), 54. https://doi.org/10.1186/s40798-024-00722-8
28. Si, X. W., Yang, Z. K., & Feng, X. (2024). A meta-analysis of the intervention effect of mindfulness training on athletes' performance. Frontiers in Psychology, 15, 1375608. https://doi.org/10.3389/fpsyg.2024.1375608
29. Spruijtenburg, G. E., van Abswoude, F., Bekhuis, H., & Steenbergen, B. (2024). Factors predicting participation in organised sports during adolescence: A two-year longitudinal perspective. PloS One, 19(9), e0310853. https://doi.org/10.1371/journal.pone.0310853
30. Strain, T., Flaxman, S., Guthold, R., Semenova, E., Cowan, M., Riley, L. M., Bull, F. C., Stevens, G. A., & Country Data Author Group (2024). National, regional, and global trends in insufficient physical activity among adults from 2000 to 2022: a pooled analysis of 507 population-based surveys with 5·7 million participants. The Lancet Global Health, 12(8), e1232–e1243. https://doi.org/10.1016/S2214-109X(24)00150-5
31. van Sluijs, E. M. F., Ekelund, U., Crochemore-Silva, I., Guthold, R., Ha, A., Lubans, D., Oyeyemi, A. L., Ding, D., & Katzmarzyk, P. T. (2021). Physical activity behaviours in adolescence: current evidence and opportunities for intervention. Lancet, 398(10298), 429–442. https://doi.org/10.1016/S0140-6736(21)01259-9
32. Wang, Y., Wu, Y., Xu, Q., Fan, S., Hu, J., Zou, D., & Zhang, X. (2024). The impact of positive activities on mental health: the mediating role of positive emotion. Frontiers in Public Health, 12, 1474544. https://doi.org/10.3389/fpubh.2024.1474544
33. White, R. L., Vella, S., Biddle, S., Sutcliffe, J., Guagliano, J. M., Uddin, R., Burgin, A., Apostolopoulos, M., Nguyen, T., Young, C., Taylor, N., Lilley, S., & Teychenne, M. (2024). Physical activity and mental health: a systematic review and best-evidence synthesis of mediation and moderation studies. The International Journal of Behavioral Nutrition & Physical Activity, 21(1), 134. https://doi.org/10.1186/s12966-024-01676-6
34. Xie, B., Lei, S., Choi, N., Choi, S. M., Wang, X., & Chen, Y. (2025). Impact of mindfulness-based interventions on sports performance and mental health: An umbrella review. Journal of Exercise Science & Fitness, 23(4), 261–272. https://doi.org/10.1016/j.jesf.2025.06.008