ArticleFrontiers in cardiovascular medicine2026
Variable shift work in family medicine residents is associated with a non-dipper pattern and reduced phase angle: possible adaptive blood pressure mechanisms and body composition imbalance.
Article in Frontiers in cardiovascular medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Shift work is associated with alterations in blood pressure (BP), metabolic changes, and unhealthy lifestyle patterns. However, the relationship between BP and variability in work hours remains poorly understood. Moreover, ambulatory blood pressure monitoring (ABPM) is a reliable approach to assess BP variability. Objective: The aim of this study was to evaluate whether shift work in family medicine residents (FMRs) modifies BP circadian patterns and whether these changes are related to body composition parameters. Methods: Thirty-eight FMRs were studied during 1 continuous 24-h day (D1) followed by 3 days of 6-h shifts (D2, D3, and D4). ABPM and body composition were assessed on D1 (postguard) and D4 (preguard). Systolic blood pressure (SBP) and diastolic blood pressure (DBP) were analyzed using nightly recordings from 10:00 p.m. to 3:00 a.m. Body composition was evaluated by electrical bioimpedance. Results: Of the 38 participants, 72.3% were women (30.2 ± 3.1 years old). Skeletal muscle mass (SMM) (24.0 ± 4.4 vs. 34.3 ± 6.2), Conclusions: The non-dipper pattern was the most frequent in FMRs, and the reduction in PhA indicates that this type of nocturnal BP alteration could be related to CVD risk.
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