Table 1.
Participant characteristics
| n | % | Mean | SD | |
| Age | 158 | 39.5 | 12.3 | |
| Job group | ||||
| Warehouse workers | 133 | 84.2 | ||
| Construction workers | 25 | 15.8 | ||
| Sex | 157 | |||
| Men | 73.9 | |||
| Women | 26.1 | |||
| BMI (kg/m2) | 158 | 26.7 | 5.1 | |
| Smoking | 157 | |||
| Yes | 31.8 | |||
| No | 68.2 | |||
| Physical activity during leisure time | 157 | |||
| Sedentary activities | 25.5 | |||
| Light activities ≥4 hours/week | 49.0 | |||
| Moderate activities ≥4 hours/week | 18.5 | |||
| Vigorous exercise several times/week | 7.0 | |||
| Work ability (0–10) | 158 | 7.9 | 1.6 | |
| Physically demanding work (0–10) | 158 | 6.8 | 1.9 | |
| Employment (years) | 158 | 12.3 | 12.2 | |
| Low back pain intensity at baseline (0–10) | 158 | 4.8 | 2.7 | |
| Chronic low back pain | 157 | |||
| Yes | 43.3 | |||
| No | 56.7 | |||
| Stress within the past 2 weeks at baseline | 157 | |||
| All the time | 3.2 | |||
| Often | 18.5 | |||
| Sometimes | 29.9 | |||
| Rarely | 30.6 | |||
| Never | 18.8 | |||
| Working hours/workday | 158 | 8.3 | 2.0 |
Some variables have missing values.
n indicates sample size.
BMI, body mass index.