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. 2020 Jun 26;15(6):e0235419. doi: 10.1371/journal.pone.0235419

Table 2. Association between physical exercise and chronic pain in male and female university and college and university students.

ICD-11 chronic pain
Unadjusted model Adjusted model§ Fully adjusted model#
n (%) OR 95% CI OR 95% CI OR 95% CI
Women
Physical exercise (frequency)
Never/less than once a week 2352 (63.5) 1.00 1.00 1.00
Once a week 2501 (61.7) 0.92 (0.83–1.01) 0.94 (0.85–1.04) 0.96 (0.90–1.00)
2–3 times per week 6719 (59.6) 0.85 (0.78–0.92) 0.88 (0.81–0.96) 0.92 (0.84–0.99)
Almost every day 3155 (57.2) 0.77 (0.70–0.84) 0.81 (0.74–0.89) 0.85 (0.77–0.93)
Physical exercise (intensity)
I take it easy without breaking into a sweat or losing my breath 2902 (64.2) 1.00 1.00 1.00
I push myself so hard that I lose my breath and break into a sweat 10072 (58.8) 0.79 (0.74–0.85) 0.81 (0.75–0.87) 0.83 (0.77–0.90)
I push myself to near-exhaustion 1200 (61.3) 0.89 (0.80–1.00) 0.89 (0.79–0.99) 0.92 (0.81–1.03)
Physical exercise (duration)
Less than 30 minutes 1774 (64.4) 1.00 1.00 1.00
30 minutes to 1 hour 8034 (59.6) 0.80 (0.72–0.88) 0.81 (0.74–0.89) 0.83 (0.76–0.92)
More than 1 hour 4371 (59.3) 0.78 (0.71–0.86) 0.80 (0.73–0.89) 0.83 (0.75–0.92)
Men
Physical exercise (frequency)
Never/less than once a week 1151 (49.5) 1.00 1.00 1.00
Once a week 758 (44.0) 0.79 (0.69–0.90) 0.81 (0.70–0.92) 0.83 (0.73–0.95)
2–3 times per week 1955 (41.3) 0.70 (0.63–0.78) 0.71 (0.64–0.79) 0.74 (0.66–0.82)
Almost every day 1239 (38.7) 0.63 (0.57–0.71) 0.65 (0.59–0.74) 0.69 (0.61–0.77)
Physical exercise (intensity)
I take it easy without breaking into a sweat or losing my breath 764 (46.6) 1.00 1.00 1.00
I push myself so hard that I lose my breath and break into a sweat 3232 (41.8) 0.82 (0.73–0.92) 0.84 (0.75–0.94) 0.85 (0.76–0.86)
I push myself to near-exhaustion 755 (40.0) 0.75 (0.65–0.86) 0.75 (0.65–0.86) 0.77 (0.67–0.89)
Physical exercise (duration)
Less than 30 minutes 540 (45.3) 1.00 1.00 1.00
30 minutes to 1 hour 2011 (43.5) 0.91 (0.80–1.04) 0.89 (0.78–1.02) 0.92 (0.80–1.05)
More than 1 hour 2200 (40.5) 0.80 (0.70–0.91) 0.80 (0.70–0.92) 0.83 (0.72–0.95)

§ Adjusted for socio demographics, body-mass index, alcohol use and problems and sleep duration

# Additional adjustment for self-reported depression