Training intensity, sleep, and athletes’ well-being during COVID-19 lockdowns
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Abstract
This study investigates the impact of training intensity, contingent self-worth in sport, and sleep on athletes' well-being during COVID-19 lockdowns. The pandemic disrupted training routines, social interactions, and mental health. Using online surveys, data were collected from 161 athletes across three periods: pre-lockdown, during lockdown, and post-lockdown. The study employed the Warwick-Edinburgh Mental Well-being Scale and the Contingent Self-worth in Sports (CSWS) questionnaire. A Latent Profile Analysis (LPA) identified two athlete profiles based on self-worth dependence on sports performance. Results showed reduced training frequency and increased sleep during lockdown. Athletes with moderate-to-high training intensity and lower self-worth dependence on performance demonstrated greater mental resilience and well-being. These findings emphasize the importance of maintaining structured training and balanced self-worth to support athletes’ mental health during disruptions like the COVID-19 pandemic.
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References
Akogul, S., & Erisoglu, M. (2017). An approach for determining the number of clusters in a model-based cluster analysis. Entropy, 19(9), 1-16. https://doi.org/10.3390/e19090452
Altena, E., Baglioni, C., Espie, C. A., Ellis, J., Gavriloff, D., Holzinger, B., Schlarb, A., Frase, L., Jernelöv, S., & Riemann, D. (2020). Dealing with sleep problems during home confinement due to the COVID-19 outbreak: Practical recommendations from a task force of the European CBT-I Academy. Journal of Sleep Research, 29(4), 1-7. https://doi.org/10.1111/jsr.13052
Ayyub, B. M. (2014). Systems resilience for multihazard environments: Definition, metrics, and valuation for decision making. Risk Analysis, 34(2), 340-355. https://doi.org/10.1111/risa.12093
Balchin, R., Linde, J., Blackhurst, D., Rauch, H. L., & Schönbächler, G. (2016). Sweating away depression? The impact of intensive exercise on depression. Journal of Affective Disorders, 200, 218-221. https://doi.org/10.1016/j.jad.2016.04.030
Bhardwaj, A. K., & Agrawal, G. (2015). Concept and applications of psycho-immunity (defense against mental illness): importance in mental health scenario. Online Journal of Multidisciplinary Research (OJMR), 1(3), 6-15.
Bhusal, N., Abdelmalak, M., Kamruzzaman, M., & Benidris, M. (2020). Power system resilience: Current practices, challenges, and future directions. IEEE Access, 8, 18064-18086. https://doi.org/10.1109/ACCESS.2020.2968586
Bicalho, C. C. F., Melo, G. F., & Noce, F. (2020). Resilience of athletes: A systematic review based on a citation network analysis. Cuadernos de Psicologia Del Deporte, 20(3), 26-40. https://doi.org/10.6018/cpd.391581
Biggins, M., Purtill, H., Fowler, P., Bender, A., Sullivan, K. O., Samuels, C., & Cahalan, R. (2019). Sleep in elite multi-sport athletes: Implications for athlete health and wellbeing. Physical Therapy in Sport, 39, 136-142. https://doi.org/10.1016/j.ptsp.2019.07.006
Bishop, D. (2004). The validity of physiological variables to assess training intensity in kayak athletes. International Journal of Sports Medicine, 25(1), 68-72. https://doi.org/10.1055/s-2003-45233
Bo, H., Jun, S., & Palta, M. (2006). PSEUDO-R 2 in logistic regression model. Statistica Sinica, 16(3), 847-860.
Bolin, D. J. (2019). Sleep Deprivation and Its Contribution to Mood and Performance Deterioration in College Athletes. Current Sports Medicine Reports, 18(8), 305-310. https://doi.org/10.1249/JSR.0000000000000621
Borg GA. (1982). Psychophysical bases of perceived exertion. Med Sci Sports Exerc, 14(5), 377-381. https://doi.org/10.1249/00005768-198205000-00012
Casagrande, M., Favieri, F., Tambelli, R., & Forte, G. (2020). The enemy who sealed the world: effects quarantine due to the COVID-19 on sleep quality, anxiety, and psychological distress in the Italian population. Sleep Medicine, 75, 12-20. https://doi.org/10.1016/j.sleep.2020.05.011
Centers for Disease Control and Prevention. (2020). Perceived Exertion (Borg Rating of Perceived Exertion Scale). Retrieved from [Accessed 2025, May 02]: https://www.cdc.gov/physical-activity-basics/measuring/?CDC_AAref_Val=https://www.cdc.gov/physicalactivity/basics/measuring/exertion.htm
Chan, J. S. Y., Liu, G., Liang, D., Deng, K., Wu, J., & Yan, J. H. (2019). Special Issue-Therapeutic Benefits of Physical Activity for Mood: A Systematic Review on the Effects of Exercise Intensity, Duration, and Modality. Journal of Psychology: Interdisciplinary and Applied, 153(1), 102-125. https://doi.org/10.1080/00223980.2018.1470487
Clark, S., & Muthén, B. O. (2009). Relating Latent Class Analysis Results to Variables not Included in the Analysis. StatisticalInnovations.Com, 1-55.
Davydov, D. M., Stewart, R., Ritchie, K., & Chaudieu, I. (2010). Resilience and mental health . To cite this version : HAL Id : inserm-00534325. Clinical Psychology Review, 30(5), 479-495. https://doi.org/10.1016/j.cpr.2010.03.003
Doherty, R., Madigan, S., Warrington, G., & Ellis, J. (2019). Sleep and nutrition interactions: Implications for athletes. Nutrients, 11(4), 1-13. https://doi.org/10.3390/nu11040822
Elliott C. R. Hall, etal. (2021). Association of muscle fiber composition with health and exercise-related traits in athletes and untrained subjects. Biology of Sport, 38(4), 659-666. https://doi.org/10.5114/biolsport.2021.102923
Engel, F. A., Ackermann, A., Chtourou, H., & Sperlich, B. (2018). High-intensity interval training performed by young athletes: A systematic review and meta-analysis. Frontiers in Physiology, 9(JUL). https://doi.org/10.3389/fphys.2018.01012
Erickson, K. (2020). Oversleeping Causes and the Health Impacts. Wellness Blog. Retrieved from [Accessed 2025, May 02]: https://fullscript.com/blog/oversleeping
Facer-Childs, E. R., Hoffman, D., Tran, J. N., Drummond, S. P. A., & Rajaratnam, S. M. W. (2021). Sleep and mental health in athletes during COVID-19 lockdown. Sleep, 44(5), 1-9. https://doi.org/10.1093/sleep/zsaa261
Ferguson, S. L., G. Moore, E. W., & Hull, D. M. (2020). Finding latent groups in observed data: A primer on latent profile analysis in Mplus for applied researchers. International Journal of Behavioral Development, 44(5), 458-468. https://doi.org/10.1177/0165025419881721
Fletcher, D., & Sarkar, M. (2012). A grounded theory of psychological resilience in Olympic champions. Psychology of Sport and Exercise, 13(5), 669-678. https://doi.org/10.1016/j.psychsport.2012.04.007
Gao, B., Dwivedi, S., Milewski, M. D., & Cruz, A. I. (2019). Chronic Lack of Sleep Is Associated With Increased Sports Injury in Adolescents: a Systematic Review and Meta-Analysis. Orthopaedic Journal of Sports Medicine, 7(3_suppl), 2325967119S0013. https://doi.org/10.1177/2325967119S00132
Gordon, B. R., et al. (2017). The effects of resistance exercise training on anxiety: a meta-analysis and meta-regression analysis of randomized controlled trials. Sports Medicine, 47(12), 2521-2532. https://doi.org/10.1007/s40279-017-0769-0
Gordon, B. R., McDowell, C. P., Hallgren, M., Meyer, J. D., Lyons, M., & Herring, M. P. (2018). Association of efficacy of resistance exercise training with depressive symptoms meta-analysis and meta-regression: Analysis of randomized clinical trials. JAMA Psychiatry, 75(6), 566-576. https://doi.org/10.1001/jamapsychiatry.2018.0572
Gulia, K. K., & Kumar, V. M. (2020). Importance of Sleep for Health and Wellbeing Amidst COVID-19 Pandemic. Sleep and Vigilance, 4(1), 49-50. https://doi.org/10.1007/s41782-020-00087-4
Haitham, J., S., B. A., Luigi, B. N., Zahra, S., MoezAlIslam, F., & V., V. M. (2025). Sleep problems during the COVID-19 pandemic by population: a systematic review and meta-analysis. Journal of Clinical Sleep Medicine, 17(2), 299–313. https://doi.org/10.5664/jcsm.8930
Heaney, C. (2021). U. M. H. and W. in S. I. A. D. (pp. 185-201). R. (2021). Understanding Mental Health and Wellbeing in Sport In Athletic Development. In Athletic Development: A Psychological Perspective (pp. 185-201). Routledge. https://doi.org/10.5860/CHOICE.51-2973
Hosseini, S. A., & Besharat, M. A. (2010). Relation of resilience whit sport achievement and mental health in a sample of athletes. Procedia - Social and Behavioral Sciences, 5, 633-638. https://doi.org/10.1016/j.sbspro.2010.07.156
Houltberg, B. J., Wang, K. T., Qi, W., & Nelson, C. S. (2018). Self-Narrative Profiles of Elite Athletes and Comparisons on Psychological Well-Being. Research Quarterly for Exercise and Sport, 89(3), 354-360. https://doi.org/10.1080/02701367.2018.1481919
Kandola, A., Ashdown-Franks, G., Hendrikse, J., Sabiston, C. M., & Stubbs, B. (2019). Physical activity and depression: Towards understanding the antidepressant mechanisms of physical activity. Neuroscience and Biobehavioral Reviews, 107(September), 525-539. https://doi.org/10.1016/j.neubiorev.2019.09.040
Kentuckycounselingcenter. (2021). How To Build Mental Resilience. Retrieved from [Accessed 2025, May 02]: https://kentuckycounselingcenter.com/how-to-build-mental-resilience/
Kirschen, G. W., Jones, J. J., & Hale, L. (2020). The Impact of Sleep Duration on Performance Among Competitive Athletes: A Systematic Literature Review. Clinical Journal of Sport Medicine : Official Journal of the Canadian Academy of Sport Medicine, 30(5), 503-512. https://doi.org/10.1097/JSM.0000000000000622
Knowles, C., Shannon, S., Prentice, G., & Breslin, G. (2021). Comparing Mental Health of Athletes and Non-athletes as They Emerge From a COVID-19 Pandemic Lockdown. Frontiers in Sports and Active Living, 3(May), 1-11. https://doi.org/10.3389/fspor.2021.612532
Kuan, Y. M., Zuhairi, N. A., Manan, F. A., Knight, V. F., & Omar, R. (2018). Visual reaction time and visual anticipation time between athletes and non-athletes. Malaysian Journal of Public Health Medicine, 2018(Specialissue1), 135-141.
Lange, K. W., & Nakamura, Y. (2020). Movement and nutrition in COVID-19. Movement and Nutrition in Health and Disease, 4, 89-94.
Lee, C. H., & Sibley, C. G. (2019). Sleep duration and psychological well-being among New Zealanders. Sleep Health, 5(6), 606-614. https://doi.org/10.1016/j.sleh.2019.06.008
Lo, J. C. et al. (2018). Sustained benefits of delaying school start time on adolescent sleep and well-being. Sleep, 41(6), zsy052. https://doi.org/10.1093/sleep/zsy052
Lv, W., Finlayson, G., & Dando, R. (2018). Sleep, food cravings and taste. Appetite, 125, 210-216. https://doi.org/10.1016/j.appet.2018.02.013
Maher, J. P., et al. (2021). Physical activity is positively associated with college students' positive affect regardless of stressful life events during the COVID-19 pandemic. 52. Psychology of Sport and Exercise, 52, 101826. https://doi.org/10.1016/j.psychsport.2020.101826
McCormick., C. (2007). Practicing Safe Stress: A Selective Overview of the Neuroscience Research. In Consciousness and Cognition Fragments of Mind and Brain (pp. 205-223). https://doi.org/10.1016/B978-012373734-2/50016-9
Ministry of Culture and Sports. (2020). Ministry of Health Guidelines for training Sports Instructors and Coaches in Light of the Corona Virus Outbreak.
Muneer, A., et al. (2021). Assessing the Effect of Lack of Sleep on Driver's Performance: A Simulator Study. Engineering and Technology Journal, 39(12), 1919-1926. https://doi.org/10.30684/etj.v39i12.2129
Nylund, K. L., Asparouhov, T., & Muthén, B. O. (2008). Erratum: Deciding on the number of classes in latent class analysis and growth mixture modeling: A Monte Carlo simulation study (Structural Equation Modeling (2007) 14:4 (535)). Structural Equation Modeling, 15(1), 182. https://doi.org/10.1080/10705510701793320
Ono & Souza. (2020). Sleep and immunity in times of COVID-19. Revista Da Associação Médica Brasileira, 66, 143-147. https://doi.org/10.1590/1806-9282.66.s2.143
World Health Organization, (2018). Mental health: strengthening our response. Retrieved from [Accessed 2025, May 02]: https://www.who.int/news-room/fact-sheets/detail/mental-health-strengthening-our-response
Paolucci, E. M., et al. (2018). Exercise reduces depression and inflammation but intensity matters. Biological Psychology, 133, 79-84. https://doi.org/10.1016/j.biopsycho.2018.01.015
Pillay, L., Janse van Rensburg, D. C. C., Jansen van Rensburg, A., Ramagole, D. A., Holtzhausen, L., Dijkstra, H. P., & Cronje, T. (2020). Nowhere to hide: The significant impact of coronavirus disease 2019 (COVID-19) measures on elite and semi-elite South African athletes. Journal of Science and Medicine in Sport, 23(7), 670-679. https://doi.org/10.1016/j.jsams.2020.05.016
Reinboth, M., & Duda, J. L. (2004). The motivational climate, perceived ability, and athletes' psychological and physical well-being. Sport Psychologist, 18(3), 237-251. https://doi.org/10.1123/tsp.18.3.237
Rosenberg, J. M., Beymer, P. N., Anderson, D. J., Van Lissa, C. J., & Schmidt, J. A. (2018). tidyLPA: An R Package to Easily Carry Out Latent Profile Analysis (LPA) Using Open-Source or Commercial Software. Journal of Open Source Software, 30(3). https://doi.org/10.21105/joss.00978
Rosenblat, M. A., Perrotta, A. S., & Vicenzino, B. (2019). Polarized vs. Threshold Training Intensity Distribution on Endurance Sport Performance: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Journal of Strength and Conditioning Research, 33(12), 3491-3500. https://doi.org/10.1519/JSC.0000000000002618
Scantlebury, S., Till, K., Sawczuk, T., Weakley, J., & Jones, B. (2018). Understanding the relationship between coach and athlete perceptions of training intensity in youth sport. Journal of Strength and Conditioning Research, 32(11), 3239-3245. https://doi.org/10.1519/JSC.0000000000002204
Schuch, F. B., Vancampfort, D., Richards, J., Rosenbaum, S., Ward, P. B., & Stubbs, B. (2016). Exercise as a treatment for depression: A meta-analysis adjusting for publication bias. Journal of Psychiatric Research, 77, 42-51. https://doi.org/10.1016/j.jpsychires.2016.02.023
Selvaraj J. (2021). Athletes are termed superhuman, perfect but they are incredibly vulnerable. ESPN. Retrieved from [Accessed 2025, May 02]: https://www.espn.com/shooting/story/_/id/32894225/abhinav-bindra-mental-health-athletes-termed-superhuman-perfect-incredibly-vulnerable-indian-shooting
Ministry of Sports the Director General, Pub. L. No. 5210-1002-2020-0057287, 57287 (2020).
Stubbs, B., Vancampfort, D., Hallgren, M., Firth, J., Veronese, N., Solmi, M., Brand, S., Cordes, J., Malchow, B., Gerber, M., Schmitt, A., Correll, C. U., De Hert, M., Gaughran, F., Schneider, F., Kinnafick, F., Falkai, P., Möller, H. J., & Kahl, K. G. (2018). EPA guidance on physical activity as a treatment for severe mental illness: a meta-review of the evidence and Position Statement from the European Psychiatric Association (EPA), supported by the International Organization of Physical Therapists in Mental . European Psychiatry, 54, 124-144. https://doi.org/10.1016/j.eurpsy.2018.07.004
Tan, B. (1999). Manipulating Resistance Training Program Variables to Optimize Maximum Strength in Men: A Review. 13(3), 289-304. https://doi.org/10.1519/00124278-199908000-00019
Taylor, S. (2021). COVID Stress Syndrome: Clinical and Nosological Considerations. Current Psychiatry Reports, 23(4), 1-7. https://doi.org/10.1007/s11920-021-01226-y
Tennant, R., Hiller, L., Fishwick, R., Platt, S., Joseph, S., Weich, S., Parkinson, J., Secker, J., & Stewart-Brown, S. (2007). The Warwick-Dinburgh mental well-being scale (WEMWBS): Development and UK validation. Health and Quality of Life Outcomes, 5, 1-13. https://doi.org/10.1186/1477-7525-5-63
Van Schrojenstein Lantman, M., Mackus, M., Otten, L. S., De Kruijff, D., van de Loo, A. J. A. E., Kraneveld, A. D., Garssen, J., & Verster, J. C. (2017). Mental resilience, perceived immune functioning, and health. Journal of Multidisciplinary Healthcare, 10, 107-112. https://doi.org/10.2147/JMDH.S130432
Veall, M. R., & Zimmermann, K. F. (1994). Evaluating Pseudo-R2's for binary probit models. Quality & Quantity, 28(2), 151-164. https://doi.org/10.1007/BF01102759
Veall, M. R., & Zimmermann, K. F. (1996). Pseudo R squared measures for some limited dependent variable models. Journal of Economic Surveys, 10(3), 241-259. https://doi.org/10.1111/j.1467-6419.1996.tb00013.x
Wagstaff, C. R. (2016). The organizational psychology of sport: Key issues and practical applications. Taylor & Francis. https://doi.org/10.4324/9781315666532
Williams, N. (2017). The Borg Rating of Perceived Exertion (RPE) scale. Occupational Medicine, 67(5), 404-405. https://doi.org/10.1093/occmed/kqx063