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A worksite vitality intervention to improve older workers' lifestyle and vitality-related outcomes: results of a randomised controlled trial [with consumer summary] |
Strijk JE, Proper KI, van der Beek AJ, van Mechelen W |
Journal of Epidemiology and Community Health 2012 Nov;66(11):1071-1078 |
clinical trial |
5/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
OBJECTIVE: To evaluate the effectiveness of a worksite vitality intervention on vigorous physical activity (VPA), fruit intake, aerobic capacity, mental health and need for recovery after work among older hospital workers (ie, 45 years and older). METHODS: The 6-month intervention was evaluated using a randomised controlled trial design. Workers who were randomised to the intervention group (n = 367; control: n = 363) received the Vital@Work intervention containing (1) a vitality exercise program (VEP) combined with (2) three visits to personal vitality coach. The VEP consisted of a weekly yoga session, a weekly workout session and weekly unsupervised aerobic exercising. Free fruit was provided at the VEP. Data on the outcome measures were collected (ie, year 2009 to 2010) at baseline (n = 730) and 6 months of follow-up after baseline (n = 575) using questionnaires, accelerometers and 2 km walk tests. Effects were analysed according to the intention-to-treat principle with complete cases (n = 575) and imputed data (n = 730) using linear regression analyses. Additional analyses were performed for high yoga and workout compliance (ie, > mean number of sessions). RESULTS: Effects were found for sports activities (beta = 40.4 min/week, 95% CI 13.0 to 67.7) and fruit intake (beta = 2.7 pieces/week, 95% CI 0.07 to 4.7) and were stronger for workers with high compliance to yoga (sport: beta = 49.6 min/week, 95% CI 13.9 to 85.2; fruit: beta = 3.8 pieces/week, 95% CI 1.1 to 6.4) and workout sessions (sport: beta = 72.9 min/week, 95% CI 36.1 to 109.8; fruit: beta = 4.0 pieces/week, 95% CI 1.1 to 6.4). The intervention group lowered their need for recovery, when compared to controls (beta = -3.5, 95% CI -6.4 to -0.54), with stronger effects for high workout compliance (beta = -5.3, 95% CI -9.3 to -1.3). No effects were found on VPA, aerobic capacity or mental health. CONCLUSIONS: Implementation of worksite yoga and workout facilities and minimal fruit interventions should be considered by employers to promote transitions into healthier lifestyles and thereby health.
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