Table 4 The potential moderators were all measured at baseline (i.e., before receiving a physical activity and relaxation program) and are divided into background variables, health and home related variables and work related variables
# it | α or r | Example of an item with answer categories and score range | Questionnaire | Studies indicating a possible modifying effect | |
|---|---|---|---|---|---|
Background | |||||
Age | 1 | N/A | “What is your date of birth?” | N/A | Steenstra (2009) [33]; Demou (2012) [48], Bauman (2012) [49] |
Sex | 1 | N/A | “What is your gender?”; 2 categories “man” or “woman” | N/A | |
Level of education | 1 | N/A | “What is the highest level of education you have completed?; 8-point scale from 1”no education” to 8 “university degree” | N/A | |
Cohabiting | 1 | N/A | “What is your current marital status?”; 6 categories (such as married, living with another, etc) | N/A | |
Mother country | 1 | N/A | “In what country were you born?”; 2 categories: the Netherlands or other | N/A | |
Health/home | |||||
BMI | 2 | N/A | “What is your weight?” en “How tall are you?” | N/A | Colkesen (2011) [34] |
General health | 1 | N/A | “In general, how would you say your health is?”; 5-point scale from 1 “excellent” to 5 “poor” | Rand-36; Van der Zee (1993) [44] | |
Mental health | 9 | α = 0.90 | “Did you feel full of pep?”; 6-point scale from 1 “none of the time” to 6 “all of the time” | Rand-36; Van der Zee (1993) [44] | |
Detachment at home | 4 | α = 0.94 | “After work, I don’t think about work at all”; 7-point scale from 1 “never” to 7 “almost always” | The recovery experience questionnaire; Sonnentag (2007) [14] and De Bloom (2011) [45] | |
Physical activity | 7 | r = 0,97 | “Do you walk/cycle to work? On how many days per week? What is the average time it takes? Rate the intensity: light, moderate, vigorous” | Short Questionnaire to Assess Health Enhancing Physical Activity (SQUASH); Wendel-Vos (2003) [46] | Colkesen (2011) [34] |
Relaxation at home | 4 | α = 0.92 | “After work, I do relaxing things”; 7-point scale from 1 “never” to 7 “almost always” | The recovery experience questionnaire; Sonnentag (2007) [14] and De Bloom (2011) [45] | |
Work related | |||||
Vitality | 5 | α = 0.83 | “At my work I feel bursting with energy”; 6-point scale from 1 “never” to 6 “always” | Part of Utrecht Work engagement Scale (UWES); Demerouti (2001) | Strijk (2012) [17] |
Team commitment | 3 | α = 0.82 | “What I feel for this team – I am proud”; 5-point scale from 1 “totally agree” to 5 “totally disagree” | ||
Organizational commitment | 8 | α = 0.79 | “I find it important that my job go’s well”; 5-point scale from 1 “strongly agree” to 5 “strongly disagree” | ||
Supervisor support | 4 | α = 0.78 | “My supervisor is concerned about the welfare of those under him”; 4-point scale from 1 “strongly agree” to 4 “strongly disagree” | Dutch version of the Job Content Questionnaire Karasek (1998) [47] | Choi (2011) [52] |
Colleague support | 4 | α = 0.76 | “People I work with are competent in doing their jobs”; 4-point scale from 1 “strongly agree” to 4 “strongly disagree” | Dutch version of the Job Content Questionnaire Karasek (1998) [47] | Choi (2011) [52] |
Job demands | 5 | α =0.70 | “My job requires working very fast”; 4-point scale from 1 “strongly agree” to 4 “strongly disagree ” | Dutch version of the Job Content Questionnaire Karasek (1998) [47] | |
Decision authority | 3 | α =0.68 | “My job allows me to make a lot of decisions on my own”; 4-point scale from 1 “ strongly agree” to 4 “strongly disagree ” | Dutch version of the Job Content Questionnaire Karasek (1998) [47] | Mullan (1985) [54] |
Skill discretion | 6 | α =0.67 | “My job requires that I learn new things”; 4-point scale from 1 “strongly agree” to 4 “strongly disagree ” | Dutch version of the Job Content Questionnaire Karasek (1998) [47] | (WEBA) |
Job insecurity | 3 | α =0.68 | “During the past year were you in a situation where you faced job loss or layoff?”; 3-point scale from 1 “no” to “actually layed off” | Dutch version of the Job Content Questionnaire Karasek (1998) [47] | |
Working overtime | 1 | N/A | “On average, how many hours of overtime do you put in per week?” | Taris (2011) [18] | |
Detachment at work | 4 | α = 0.93 | “During a break at work I forget about my work”; 7-point scale from 1 “never” to 7 “almost always” | Adapted question (at work was added) of “The recovery experience questionnaire”; Sonnentag (2007) [14] and De Bloom (2011) [45] | |
Relaxation at work | 4 | α = 0.88 | “During a break at work I use the time to relax”; 7-point scale from 1 “never” to 7 “almost always” | Adapted question (at work was added) of “The recovery experience questionnaire”; Sonnentag (2007) [14] and De Bloom (2011) [45] | |