Table 2.
MS symptoms in people working at night or in rotating shift.
| n | Population | Age (years) | Gender (F/M) | Country | Years of shiftwork | Schedule | Hours worked per shift/started at | Alteraciones | Reference |
|---|---|---|---|---|---|---|---|---|---|
| 27,485 | nd | 30–50 years | F/M | Sweden | nd | Self-reported | nd | Obesity, high triglycerides, and low HDL cholesterol | Karlsson et al. (211) |
| 437 DW, 246 SW | Factory employers | 34–38 years | M | Argentina (European Ancestry) | nd | 4 days, 3 rest, 2 nights, 3 rest, 4 nights, 3 rest, 2 days, 3 rest | 12 h/06:00 h and 18:00 h | High waist-hip ratio, diastolic arterial blood pressure, fasting glucose and insulin, HOMA index, and triglycerides | Sookoian (212) |
| 98 DW, 100 SW | Petrochemical plant employers | 39–60 years | M | France | >10 years | 1–2 days, 1–2 afternoon, 12 night, 3–4 rest | 8h/05:00, 13:00, and 21:00 h for SW, 08:00 for DW | Rise triglycerides, free fatty acids, and gGTP and lower HDL cholesterol | Esquirol et al. (213) |
| 1220 DW, 309 SW | Employers of public administrations, private companies and a bank | 35–59 years | M | Belgian | >20 years | Two rotating shifts | nd | High body mass index (BMI), waist circumference, systolic and diastolic blood pressure, low HDL cholesterol | De Bacquer et al. (214) |
| 336 DW, 402 SW | Nurses | 37–40 years | F/M | nd | >1 year | 4 nights per month | nd | High BMI. Predictors of MS: sedentariness and SW (4-year follow-up: 9 vs 1.8%) | Pietroiusti et al. (199) |
| 125 DW, 165 eSW, 102 pSW | Workers of an electronic manufacturing company | 25–31 years | F | Taiwanese | >5 years | 6 days, 3 rest, 6 night, 3 rest | 12 h/07:30 h and 19:30 h | Increased percentage of development of MS in pRSW (5 years follow-up). Obesity and elevated blood pressure in pRSW | Lin et al. (215) |
| 26,382 | Dongfeng Motor Corporation’s employers | Retired workers (average 63.6 years) | F/M | Chinese | 1–10, 11–19, or >20 years | 2 shifts, 3 shifts or 4 shifts | 12, 8, and 6 h, respectively | Long-term shift work associated with MS in females. High blood pressure, waist circumference and glucose levels | Guo et al. (207) |
| 2,661 DW, 656 SW | nd | 20–40 years | F/M | South Korean | nd | Self-reported | nd | Shift work was associated with MS in females | Yu et al. (209) |
| 370 DW, 354 SW | Nurses and midwives | 40–60 years | F | Poland | <10, 10–20, or >20 years | 2–7, or >8 night per month | 12 h/7 p.m. | Increased BMI, waist circumference and obesity in women reporting >8 night shifts per month | Pietroiusti et al. (199) |
MS, metabolic syndrome; DW, day workers; NW, night workers; SW, rotating shift workers; eSW, ever rotating shiftwork; pSW, persistent SW.