Table 2.
The anthropometric indices, mood states and job-related stress at baseline and after the 10 weeks in the intervention and control groups
| Intervention group (5 workplaces, n=29) |
Control group (6 workplaces, n=30) |
Group×time interaction (p value) |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Baseline | 10 weeks | p value | Baseline | 10 weeks | p value | ||||
| The data are expressed as the mean ± standard deviation. BMI, body mass index; POMS, Profile of Mood States; TMD, total mood disturbance; BJSQ, Brief Job Stress Questionnaire. | |||||||||
| Anthropometric indices and blood pressure | |||||||||
| BMI (kg/m2) | 23.1±3.2 | 23.2±3.2 | 0.466 | 22.5±2.5 | 22.6±2.3 | 0.179 | 0.595 | ||
| Body fat mass (kg) | 15.7±4.8 | 15.6±4.8 | 0.829 | 14.9±3.9 | 15.0±4.0 | 0.706 | 0.649 | ||
| Lean body mass (kg) | 48.0±9.8 | 48.3±9.8 | 0.210 | 48.4±8.7 | 48.6±8.6 | 0.139 | 0.607 | ||
| Waist circumference (cm) | 82.9±10.8 | 82.0±9.8 | 0.375 | 81.2±7.4 | 81.4±8.0 | 0.502 | 0.281 | ||
| Systolic blood pressure (mmHg) | 119.9±16.3 | 122.4±17.1 | 0.127 | 124.1±23.1 | 121.7±18.1 | 0.389 | 0.187 | ||
| Diastolic blood pressure (mmHg) | 76.1±15.2 | 78.0±13.2 | 0.090 | 77.7±13.5 | 77.5±10.6 | 0.830 | 0.343 | ||
| POMS 2 score | |||||||||
| Anger-hostility (points) | 7.1±5.4 | 7.1±5.4 | 0.972 | 6.5±5.1 | 5.8±5.7 | 0.323 | 0.324 | ||
| Confusion-bewilderment (points) | 14.2±6.5 | 13.2±6.7 | 0.081 | 12.1±6.7 | 11.1±6.7 | 0.090 | 0.913 | ||
| Depression-dejection (points) | 8.4±7.7 | 8.5±8.3 | 0.605 | 7.8±8.2 | 7.5±7.2 | 0.761 | 0.840 | ||
| Fatigue-inertia (points) | 7.8±4.5 | 6.0±3.6 | 0.007 | 6.6±5.6 | 6.7±5.5 | 0.648 | 0.042 | ||
| Tension-anxiety (points) | 12.9±6.6 | 11.8±6.3 | 0.113 | 12.1±6.5 | 11.5±7.7 | 0.247 | 0.866 | ||
| Vigor-activity (points) | 11.5±6.4 | 13.4±6.2 | 0.008 | 12.9±8.4 | 13.0±7.8 | 0.920 | 0.046 | ||
| Friendliness (points) | 10.5±3.4 | 11.6±3.9 | 0.010 | 10.8±4.2 | 10.3±3.6 | 0.131 | 0.001 | ||
| TMD score (points) | 39.0±31.3 | 33.4±30.9 | 0.018 | 31.6±26.9 | 29.5±28.2 | 0.096 | 0.279 | ||
| BJSQ score | |||||||||
| Job stressor | |||||||||
| Quantitative job workload (points) | 3.1±0.8 | 3.0±0.7 | 0.272 | 3.1±1.1 | 3.3±1.1 | 0.236 | 0.358 | ||
| Qualitative job workload (points) | 2.9±0.8 | 2.9±0.9 | 0.799 | 3.1±1.0 | 3.3±0.8 | 0.256 | 0.219 | ||
| Physical demands (points) | 3.6±0.6 | 3.4±0.6 | 0.098 | 3.7±0.5 | 3.7±0.5 | 0.990 | 0.294 | ||
| Interpersonal stress (points) | 3.2±0.8 | 2.9±0.5 | 0.008 | 3.2±0.8 | 3.2±0.8 | 0.686 | 0.019 | ||
| Poor workplace environment (points) | 2.6±1.0 | 2.8±0.9 | 0.196 | 2.8±1.0 | 3.1±0.9 | 0.272 | 0.634 | ||
| Job control (points) | 3.3±0.6 | 3.4±0.7 | 0.445 | 3.7±0.7 | 3.7±0.9 | 0.767 | 0.545 | ||
| Skill utilization (points) | 3.0±0.7 | 2.9±0.7 | 0.161 | 3.0±0.8 | 2.9±0.7 | 0.917 | 0.436 | ||
| Job aptitude (points) | 2.8±0.9 | 2.9±0.9 | 0.715 | 3.2±1.0 | 3.0±0.8 | 0.239 | 0.328 | ||
| Worthwhileness of working life (points) | 2.9±0.9 | 3.0±0.9 | 0.361 | 3.1±1.2 | 3.0±1.0 | 0.248 | 0.144 | ||
| Job stress reaction | |||||||||
| Vigor (points) | 3.0±1.1 | 3.5±1.3 | 0.002 | 3.2±1.2 | 3.2±0.8 | 0.610 | 0.021 | ||
| Irritability (points) | 3.4±1.1 | 3.4±1.1 | 0.991 | 3.2±1.0 | 3.4±1.0 | 0.301 | 0.204 | ||
| Fatigue (points) | 3.0±0.8 | 3.1±0.8 | 0.554 | 3.4±1.1 | 3.2±1.1 | 0.374 | 0.382 | ||
| Anxiety (points) | 3.0±0.8 | 3.2±1.0 | 0.142 | 3.3±1.1 | 3.3±1.0 | 0.861 | 0.703 | ||
| Depression (points) | 3.2±1.3 | 3.3±1.3 | 0.477 | 3.5±1.3 | 3.3±1.1 | 0.285 | 0.324 | ||
| Physical complaint (points) | 2.9±0.8 | 2.8±1.0 | 0.310 | 3.2±0.7 | 3.4±1.0 | 0.164 | 0.152 | ||
| Social support | |||||||||
| Support from superiors (points) | 3.4±1.0 | 3.9±0.7 | 0.019 | 3.2±1.0 | 3.0±1.1 | 0.263 | 0.021 | ||
| Support from colleagues (points) | 3.1±0.8 | 3.4±0.7 | 0.018 | 2.8±1.0 | 2.7±0.9 | 0.594 | 0.012 | ||
| Support from family/friends (points) | 3.4±1.4 | 3.9±1.0 | 0.005 | 3.4±1.3 | 3.4±1.5 | 0.875 | 0.008 | ||
| Satisfaction for job/daily life (points) | 3.2±0.8 | 3.4±0.8 | 0.027 | 3.4±1.0 | 3.2±0.8 | 0.388 | 0.034 | ||
| Work Ability Index (points) | 42.3±5.0 | 41.6±5.1 | 0.414 | 42.7±5.1 | 41.8±4.3 | 0.242 | 0.906 | ||