Shift Work Disorder, Shift Work Type Circadian Rhythm Sleep Disorder
Conditions
Keywords
Shift Work, Circadian Rhythm, Chronotype, Musculoskeletal pain, Sleeep quality, Quality of life, occupational health
Brief summary
Shift work can disrupt the body's circadian rhythm, which may negatively affect sleep, musculoskeletal health, and quality of life. Heavy industry workers who perform rotating or night shifts may be particularly vulnerable to these health problems. This cross-sectional observational study will evaluate circadian rhythm characteristics, musculoskeletal pain, sleep quality, and quality of life among heavy industry shift workers. Participants will complete validated questionnaires assessing chronotype, musculoskeletal symptoms, sleep quality, and quality of life. The study will examine the associations between chronotype and these health outcomes and compare the results across different chronotype groups. The findings may contribute to a better understanding of the health effects of shift work and support the development of occupational health strategies for shift workers
Interventions
Participants will complete validated self-administered questionnaires to assess chronotype, musculoskeletal pain, sleep quality, and quality of life. No therapeutic intervention will be administered.
Sponsors
Istanbul Gedik University
Study design
Observational model
OTHER
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Inclusion criteria
* Ages 18-65 * Working in a shift system for at least 3 months * Agreeing to participate in the work voluntarily * Being a shift worker
Exclusion criteria
* Presence of using any medication that may affect alertness or muscle activity
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Morningness-Eveningness Questionnaire (MEQ) | At enrollment (single assessment) | The Morningness-Eveningness Questionnaire (MEQ) is a validated 19-item self-administered questionnaire used to determine an individual's chronotype (morning, intermediate, or evening type). Total scores range from 16 to 86. Higher scores indicate a greater preference for morningness, whereas lower scores indicate a greater preference for eveningness. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Cornell Musculoskeletal Discomfort Questionnaire (CMDQ) | At enrollment (single assessment) | The Cornell Musculoskeletal Discomfort Questionnaire (CMDQ) is a validated self-administered questionnaire used to assess the frequency, severity, and work-related impact of musculoskeletal discomfort in different body regions. The total score is calculated by summing weighted scores across body regions and does not have a fixed minimum or maximum value. Higher scores indicate greater musculoskeletal discomfort. |
| Pittsburgh Sleep Quality Index (PSQI) | At enrollment (single assessment) | The Pittsburgh Sleep Quality Index (PSQI) is a validated self-administered questionnaire used to evaluate sleep quality over the previous month. Total scores range from 0 to 21, with higher scores indicating poorer sleep quality. |
| World Health Organization Quality of Life-BREF (WHOQOL-BREF) | At enrollment (single assessment) | The World Health Organization Quality of Life-BREF (WHOQOL-BREF) is a validated self-administered questionnaire that assesses quality of life across the physical, psychological, social, and environmental domains. Domain scores are transformed to a 0-100 scale, with higher scores indicating better quality of life. |
Countries
Turkey (Türkiye)
Contacts
CONTACTAmine Ataç, PhD
Outcome results
None listed