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Journals / SPORMETRE Beden Eğitimi ve Spor Bilimleri Dergisi / 2026 / Cilt: 24 Sayı: 3

Morning vs. Evening: Diurnal Variations in Anaerobic Power, Dynamic Balance, and Perceptual Responses in Athletes

Sabah mı Akşam mı? Sporcularda Anaerobik Güç, Dinamik Denge ve Algısal Tepkilerde Gün İçi Değişimler

Kadir Diler(GAZİANTEP ÜNİVERSİTESİ)0000-0002-1252-4288
Pages
701–710
Publication Date
2026-09-30
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The findings indicate that circadian rhythm has notable effects on sports performance and perceptual responses.

📌 3 Key Takeaways

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Objective & Hypothesis:This study aimed to examine the effects of circadian rhythm on athletes’ athletic performance parameters (balance, anaerobic power) and perceptual responses (feeling of pleasure, perceived exertion).
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Key Findings & Data:Twenty-one active athletes (10 females, 11 males) studying at Gaziantep University Faculty of Sport Sciences volunteered for the study.
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Conclusion & Impact:The findings indicate that circadian rhythm has notable effects on sports performance and perceptual responses.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Sirkadiyen ritim · gün içi değişimler · atletik performans

Abstract

This study aimed to examine the effects of circadian rhythm on athletes’ athletic performance parameters (balance, anaerobic power) and perceptual responses (feeling of pleasure, perceived exertion). Twenty-one active athletes (10 females, 11 males) studying at Gaziantep University Faculty of Sport Sciences volunteered for the study. Participants underwent static and dynamic balance tests, the Wingate anaerobic power test, and perceptual response measurements in the morning (08:00–10:00) and evening (17:00–19:00). Since the data violated the assumption of normality, statistical comparisons were conducted using the Wilcoxon and Mann–Whitney U (p<.05). No significant differences were found between morning and evening measurements in static balance parameters (p>.05). However, dynamic balance (p<.05) and peak power values (p<.05) were significantly higher in the evening. Regarding sex differences, males generally exhibited higher power performance values, while females showed increased peak and mean power outputs particularly in the evening. Additionally, females demonstrated higher dynamic balance performance compared to males (p<.05). The feeling of pleasure was significantly higher in the evening (p<.05), whereas no difference was observed in perceived exertion levels. The findings indicate that circadian rhythm has notable effects on sports performance and perceptual responses. These results suggest that scheduling training sessions in the evening may offer distinct advantages in terms of both performance and motivation.

Özet

Bu çalışma, sirkadiyen ritmin sporcuların atletik performans parametreleri (denge, anaerobik güç) ve algısal tepkileri (haz duygusu, algılanan zorluk) üzerindeki etkilerini incelemeyi amaçlamıştır. Araştırmaya Gaziantep Üniversitesi Spor Bilimleri Fakültesi'nde öğrenim gören yirmi bir aktif sporcu (10 kadın, 11 erkek) katılmıştır. Katılımcılara sabah (08:00–10:00) ve akşam (17:00–19:00) saatlerinde statik ve dinamik denge testleri, Wingate anaerobik güç testi ve algısal tepki ölçümleri uygulanmıştır. Verilerin normal dağılım göstermemesi nedeniyle istatistiksel karşılaştırmalarda Wilcoxon ve Mann–Whitney U testleri tercih edilmiştir (p<0.05). Statik denge parametrelerinde sabah ve akşam ölçümleri arasında anlamlı bir fark bulunmamıştır (p>0,05). Ancak, dinamik denge (p<0,05) ve zirve güç değerleri (p<0,05) akşam saatlerinde anlamlı düzeyde daha yüksek bulunmuştur. Cinsiyet farklılıkları incelendiğinde; erkekler genel olarak daha yüksek güç performansı değerleri sergilerken, kadınların özellikle akşam saatlerinde zirve ve ortalama güç çıktılarında artış gösterdiği belirlenmiştir. Ayrıca, kadınların erkeklere kıyasla daha yüksek dinamik denge performansına sahip olduğu görülmüştür (p<0,05). Algılanan zorluk düzeylerinde herhangi bir fark gözlenmezken, haz duygusunun akşam saatlerinde anlamlı derecede daha yüksek olduğu tespit edilmiştir (p<0,05). Elde edilen bulgular, sirkadiyen ritmin sportif performans ve algısal tepkiler üzerinde dikkate değer etkileri olduğunu göstermektedir. Bu bağlamda, akşam saatlerinde gerçekleştirilen antrenmanların hem performans hem de motivasyon açısından avantaj sağlayabileceği söylenebilir.

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Cite This Article

Diler, K. (2026). Morning vs. Evening: Diurnal Variations in Anaerobic Power, Dynamic Balance, and Perceptual Responses in Athletes. SPORMETRE Beden Eğitimi ve Spor Bilimleri Dergisi, Cilt: 24 Sayı: 3, 701–710. https://doi.org/10.33689/spormetre.1859261

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References (26)

  1. Bar-Or, O. (1987). The Wingate anaerobic test: An update on methodology, reliability and validity. Sports Medicine, 4(6), 381–394. https://doi.org/10.2165/00007256-198704060-00001
  2. Borg, G. A. (1982). Psychophysical bases of perceived exertion. Medicine & Science in Sports & Exercise, 14(5), 377–381. https://doi.org/10.1249/00005768-198205000-00012
  3. Chtourou, H., Engel, F. A., Fakhfakh, H., Fakhfakh, H., Hammouda, O., Ammar, A., Trabelsi, K., Souissi, N., & Sperlich, B. (2018). Diurnal variation of short-term repetitive maximal performance and psychological variables in elite judo athletes. Frontiers in Physiology, 9, Article 1499. https://doi.org/10.3389/fphys.2018.01499
  4. Chtourou, H., & Souissi, N. (2012). The effect of training at a specific time of day: A review. Journal of Strength and Conditioning Research, 26(7), 1984–2005. https://doi.org/10.1519/JSC.0b013e31825770a7
  5. Deschenes, M. R., Sharma, J. V., & Brittingham, K. T. (1998). Chronobiological effects on exercise performance and selected physiological responses. European Journal of Applied Physiology and Occupational Physiology, 77(3), 249–256. https://doi.org/10.1007/s004210050329
  6. Drust, B., Waterhouse, J., Atkinson, G., Edwards, B., & Reilly, T. (2005). Circadian rhythms in sports performance: An update. Chronobiology International, 22(1), 21–44. https://doi.org/10.1081/cbi-200041039
  7. Ekkekakis, P., Parfitt, G., & Petruzzello, S. J. (2011). The pleasure and displeasure people feel when they exercise at different intensities: Decennial update and progress towards a tripartite rationale for exercise intensity prescription. Sports Medicine, 41(8), 641–671. https://doi.org/10.2165/11590680-000000000-00000
  8. Facer-Childs, E., & Brandstaetter, R. (2015). The impact of circadian phenotype and time since awakening on diurnal performance in athletes. Current Biology, 25(4), 518–522. https://doi.org/10.1016/j.cub.2014.12.036
  9. Foster, R. G., & Kreitzman, L. (2014). The rhythms of life: What your body clock means to you. Experimental Physiology, 99(4), 599–606. https://doi.org/10.1113/expphysiol.2012.071118
  10. Gabriel, B. M., & Zierath, J. R. (2019). Circadian rhythms and exercise: Re-setting the clock in metabolic disease. Nature Reviews Endocrinology, 15(4), 197–206. https://doi.org/10.1038/s41574-018-0150-x
  11. Gribble, P. A., Hertel, J., & Plisky, P. (2012). Using the Star Excursion Balance Test to assess dynamic postural-control deficits and outcomes in lower extremity injury: A literature and systematic review. Journal of Athletic Training, 47(3), 339–357. https://doi.org/10.4085/1062-6050-47.3.08
  12. Handelsman, D. J., Hirschberg, A. L., & Bermon, S. (2018). Circulating testosterone as the hormonal basis of sex differences in athletic performance. Endocrine Reviews, 39(5), 803–829. https://doi.org/10.1210/er.2018-00020
  13. Hill, D. W., & Smith, J. C. (1991). Circadian rhythm in anaerobic power and capacity. Canadian Journal of Sport Sciences, 16(1), 30–32.
  14. Hinman, M. R. (2000). Factors affecting reliability of the Biodex Balance System: A summary of four studies. Journal of Sport Rehabilitation, 9(3), 240–252. https://doi.org/10.1123/jsr.9.3.240
  15. Hrysomallis, C. (2011). Balance ability and athletic performance. Sports Medicine, 41(3), 221–232. https://doi.org/10.2165/11538560-000000000-00000
  16. Inbar, O., Bar-Or, O., & Skinner, J. S. (1996). The Wingate anaerobic test. Human Kinetics.
  17. Lee, A. J. Y., & Lin, W. H. (2007). The influence of gender and somatotype on single-leg upright standing postural stability in children. Journal of Applied Biomechanics, 23(3), 173–179. https://doi.org/10.1123/jab.23.3.173
  18. Lericollais, R., Gauthier, A., Bessot, N., Sesboüé, B., & Davenne, D. (2009). Time-of-day effects on fatigue during a sustained anaerobic test in well-trained cyclists. Chronobiology International, 26(8), 1622–1635. https://doi.org/10.3109/07420520903534492
  19. Paillard, T., & Noé, F. (2006). Effect of expertise and visual contribution on postural control in soccer. Scandinavian Journal of Medicine & Science in Sports, 16(5), 345–348. https://doi.org/10.1111/j.1600-0838.2005.00502.x
  20. Racinais, S., Hue, O., & Blonc, S. (2004). Time-of-day effects on anaerobic muscular power in a moderately warm environment. Chronobiology International, 21(3), 485–495. https://doi.org/10.1081/cbi-120038632
  21. Rae, D. E., Stephenson, K. J., & Roden, L. C. (2015). Factors to consider when assessing diurnal variation in sport performance. European Journal of Applied Physiology, 115(6), 1339–1349. https://doi.org/10.1007/s00421-015-3109-9
  22. Roenneberg, T., Kuehnle, T., Juda, M., Kantermann, T., Allebrandt, K., Gordijn, M., & Merrow, M. (2007). Epidemiology of the human circadian clock. Sleep Medicine Reviews, 11(6), 429–438. https://doi.org/10.1016/j.smrv.2007.07.005
  23. Sell, T. C. (2012). An examination, correlation, and comparison of static and dynamic measures of postural stability in healthy, physically active adults. Physical Therapy in Sport, 13(2), 80–86. https://doi.org/10.1016/j.ptsp.2011.06.006
  24. Souissi, N., Driss, T., Chamari, K., Vandewalle, H., Davenne, D., Gam, A., Fillard, J. R., & Jousselin, E. (2010). Diurnal variation in Wingate test performances: Influence of active warm-up. Chronobiology International, 27(3), 640–652. https://doi.org/10.3109/07420528.2010.483157
  25. Thun, E., Bjorvatn, B., Flo, E., Harris, A., & Pallesen, S. (2015). Sleep, circadian rhythms, and athletic performance. Sleep Medicine Reviews, 23, 1–9. https://doi.org/10.1016/j.smrv.2014.11.003
  26. Vitale, J. A., & Weydahl, A. (2017). Chronotype, physical activity, and sport performance: A systematic review. Sports Medicine, 47(9), 1859–1868. https://doi.org/10.1007/s40279-017-0741-z