The effect of circadian rhythmicity on lower extremity strength and balance in female athletes

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dc.authorid0009-0005-1723-9901
dc.authorid0000-0003-4545-210X
dc.authorid0000-0002-8070-0626
dc.authorid0000-0002-1000-2881
dc.authorid0000-0003-1411-2778
dc.authorid0000-0002-0046-6711
dc.contributor.authorAktaş, Burcu
dc.contributor.authorKorkmaz Salkılıç, Esra
dc.contributor.authorAnıl, Berna
dc.contributor.authorAkdemir, Enes
dc.contributor.authorAkgün, Soner
dc.contributor.authorYılmaz, Ali Kerim
dc.date.accessioned2026-07-14T10:56:01Z
dc.date.available2026-07-14T10:56:01Z
dc.date.issued2025
dc.departmentAÇÜ
dc.description.abstractThe aim of this study was to investigate the effect of circadian rhythmicity (CR) on lower extremity strength and balance performance in 22 female athletes (19-24 y). Participants underwent isokinetic knee strength, Single Leg Hop Tests (SLHT), Y Balance Test (YBT), and isokinetic static/dynamic balance tests. All measurements were randomized and performed at 9:00, 14:00, and 19:00 to assess CR variation. In total, 3 angular strength, 5 jump, and 2 balance tests were analyzed. When comparing results across time zones, body temperature, isokinetic 60 degrees/sec extension (Ext) strength, and several bipedal static balance parameters Forward-Backward Standard Deviation (SBFD), Average Forward-Backward Speed (AFBS), and Ellipse Area (EA)) showed statistical significance (p>0.05). No significant differences were found in other isokinetic strength tests, all SLHTs, Y balance, or dynamic balance tests (p>0.05). Significant CR effects on lower extremity strength were observed only in the 60 sec extension, with overall strength peaking at 14:00. Strength asymmetry remained similar across time points. These findings suggest that time-sensitive performance parameters like strength and static balance are influenced by CR, while balance and coordination parameters appear more stable. Accordingly, scheduling strength-based training during midday hours may optimize performance by leveraging CR-related variations.
dc.identifier.doi10.1080/07420528.2025.2597962
dc.identifier.endpage288
dc.identifier.issn0742-0528
dc.identifier.issn1525-6073
dc.identifier.issue2
dc.identifier.startpage277
dc.identifier.urihttps://hdl.handle.net/11494/6329
dc.identifier.volume43
dc.identifier.wosWOS:001632270100001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.institutionauthorAkgün, Soner
dc.institutionauthorid0000-0003-1411-2778
dc.language.isoen
dc.publisherTAYLOR & FRANCIS INC
dc.relation.ispartofCHRONOBIOLOGY INTERNATIONAL
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectCircadian rhythm
dc.subjectIsokinetic strength
dc.subjectBalance
dc.subjectFemale athletes
dc.subjectLower extremity
dc.titleThe effect of circadian rhythmicity on lower extremity strength and balance in female athletes
dc.typeArticle

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