What question did this study set out to answer?

To evaluate the biological and psychological impacts of two rapid shiftwork schedules compared to standard day work in an industrial setting.

September 15, 2004Ergonomics

Biological and psychological responses to two rapid shiftwork schedules

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Why the study?

Do rapid shiftwork schedules alter heart rate, cortisol profiles, and self-reported stress and health in male workers?

Population

32 male workers aged 23 to 56 from the same company

Comparison

Rapid shiftwork schedules vs 16 day-workers serving as a reference group

Design

Cross-sectional

Follow-up

24 h

Authors

GLG. LacUniversité Oran 1 Ahmed Ben Bella ACA. ChamouxInstitut für Hygiene und Umwelt

Discussion

Member takes

Implication

Shiftwork stress and cortisol changes merit occupational health attention; leaves open prospective cardiovascular effects.

Key Points

To evaluate the biological and psychological impacts of two rapid shiftwork schedules compared to standard day work in an industrial setting.
Assessed 32 male employees (aged 23–56 years) with comparable BMIs working under real conditions at the same company, categorized into 16 day-workers (controls), 8 workers on a 3/2 rota, and 8 workers on a 7/5 rota.
Recorded 24-hour continuous heart rate and 24-hour circadian profiles of salivary cortisol using radioimmunoassay.
Evaluated self-perceptions of sleep quantity, stress levels, general health, job satisfaction, and personal life satisfaction using questionnaires.
Shiftworkers reported higher stress, more frequent health issues, and lower job satisfaction than day workers, though the 7/5 group demonstrated better health and fitness scores and required less sleep than the 3/2 group.
Heart rate showed no significant changes in response to shiftwork schedules across groups.
Circadian salivary cortisol profiles were consistently disrupted in shiftworkers, with the largest deviations occurring during night shifts and within the 7/5 rota, correlating with perceived work constraints.

Structured PICO

Do rapid shiftwork schedules alter heart rate, cortisol profiles, and self-reported stress and health in male workers?

Population

32 male workers aged 23 to 56 from the same company

Intervention

Rapid shiftwork schedules (8 workers on a 3/2 system, 8 workers on a 7/5 system)

Comparator

16 day-workers (8 am-6 pm) serving as a reference group

Outcome

Heart rate, circadian profile of salivary cortisol over 24 h, and self-reported sleep quantity, stress, health, and satisfactionsurrogate

Rapid shiftwork schedules significantly alter cortisol circadian profiles and increase self-reported stress compared to standard day work, without affecting heart rate.

Cite This Study

Lac et al. (2004) studied this question.

synapsesocial.com/papers/6a10ee5bb1f64a72d764608b https://doi.org/10.1080/00140130410001724237

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Biological and psychological responses to two rapid shiftwork schedules

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Biological and psychological responses to two rapid shiftwork schedules

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider