Self-efficacy scale for breaking up prolonged sitting among office workers: Development and validity
ISPAH ePoster Library. Jindo T. Oct 15, 2018; 225281; 29
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Abstract Purpose This study investigated the criterion validity of a newly-developed self-efficacy scale to break up prolonged sitting among office workers with objectively measured sedentary behavior (SB).MethodsParticipants were 90 office workers from a single company; 70 participants were eligible for the analysis. We developed a task-specific self-efficacy scale in Japanese. The scale investigated perception of SB at work by asking participants if they felt it was possible to stand regularly to break up prolonged sitting during work hours. Five levels were proposed, involving standing up at least once in a specific period (30, 45, 60, 90, and 120 min). Responses were on a 10-point Likert scale: completely impossible = 0, neither agree nor disagree = 5, completely possible = 10. We measured participants’ SB with a waist-worn triaxial accelerometer (HJA-750C). Participants were instructed to wear the accelerometer at all times while they were awake for 2 weeks, except when swimming or bathing.ResultsFor the 60- and 90-min levels, self-efficacy was significantly correlated with number of bouts (r = −0.302, −0.269, respectively) and total time (r = −0.269, −0.241, respectively) of prolonged SB (sitting for periods of 30 min or longer) in the working day. There were no significant correlations between self-efficacy for these levels and overall SB time. ConclusionSelf-efficacy for standing up at least once every 60 and 90 min was favorably related to prolonged SB in the working day. The findings suggest that an intervention focus on improving self-efficacy might effectively reduce SB at work.
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