Network comparison methods detect temporal reorganization of psychophysiological integration invisible to conventional univariate analysis: Proof-of-concept using lunar-phase-timed measurements in elite athletes

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dc.contributor.authorYousfi, Narimen
dc.contributor.authorDhahbi, Wissem
dc.contributor.authorGhouili, Hatem
dc.contributor.authorMejri, Mohamed Arbi
dc.contributor.authorBessifi, Manel
dc.contributor.authorCeylan, Halil Ibrahim
dc.contributor.authorChamari, Karim
dc.date.accessioned2026-09-01T15:52:37Z
dc.date.available2026-09-01T15:52:37Z
dc.date.issued2026
dc.departmentBayburt Üniversitesi
dc.description.abstractField studies using conventional univariate methods fail to detect physiological rhythms (melatonin, cortisol, sleep architecture) that are consistently documented under laboratory-controlled conditions, suggesting that temporal factors operate on systemic organization rather than isolated metrics. Network analysis quantifies conditional dependencies among variables simultaneously, enabling the detection of organizational changes independent of mean-level shifts. As an exploratory proof-of-concept, this study examines whether network comparison methods detect temporal reorganization of psychophysiological integration invisible to conventional repeated-measures analysis in elite athletes; no confirmatory causal inference is drawn. Twelve elite male athletes completed psychophysiological assessments (mood states, subjective well-being, neurocognitive performance, postural control, intermittent endurance) at three lunar phases (New Moon, First Quarter, Full Moon) in a counterbalanced design. Conventional repeated-measures ANOVA detected no temporal effects on isolated variables (all F < 2.87, p > 0.05, eta(2)p < 0.21). Network comparison revealed marked organizational differences: New Moon versus Full Moon networks exhibited distinct architecture (M = 0.31, padj = 0.008) and connectivity (S = 8.42, padj = 0.029). Centrality systematically redistributed from capacity and well-being constructs (New Moon: vigour z = 1.82) to recovery markers (Full Moon: stress z = 2.13). Twelve connections differed significantly, including enhanced stress-confusion coupling (Delta r = +0.39, p = 0.003). This proof-of-concept demonstrates that temporal measurements can exhibit systemic reorganization despite stable component means, resolving apparent contradictions between laboratory-detected physiological rhythms and field-based null findings. Temporal control measurements and multi-cycle replication are required to definitively attribute observed reorganization to lunar periodicity rather than generic temporal variation.
dc.identifier.doi10.1080/07420528.2026.2648754
dc.identifier.endpage1114
dc.identifier.issn0742-0528
dc.identifier.issn1525-6073
dc.identifier.issue7
dc.identifier.orcid0000-0003-4031-1412
dc.identifier.pmid41972794
dc.identifier.scopus2-s2.0-105035793092
dc.identifier.scopusqualityQ2
dc.identifier.startpage1099
dc.identifier.urihttp://dx.doi.org/10.1080/07420528.2026.2648754
dc.identifier.urihttps://hdl.handle.net/20.500.12403/8510
dc.identifier.volume43
dc.identifier.wosWOS:001739788300001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
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/openAccess
dc.snmzKA_WOS_20260820
dc.subjectBiomarkers
dc.subjectChronobiology
dc.subjectGraphical Gaussian Models
dc.subjectMood States
dc.subjectPostural Balance
dc.subjectSleep Quality
dc.subjectTask Performance
dc.titleNetwork comparison methods detect temporal reorganization of psychophysiological integration invisible to conventional univariate analysis: Proof-of-concept using lunar-phase-timed measurements in elite athletes
dc.typeArticle

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