Effects on Activity Outcomes of an e-Health Smartphone Intervention to Reduce Office Workers' Sitting Time
Oral Presentation B6.4
DOI:
https://doi.org/10.14288/hfjc.v14i3.524Keywords:
Physical Activity, Sedentary Behaviour, Workplace, Intervention, FeasibilityAbstract
Background: Occupational sedentary time is the largest contributor to total weekday sitting time among office workers. Purpose: This feasibility study evaluated the effects of an individual-level intervention to target office workers total and prolonged sedentary behaviour during working hours, using an e-health smartphone application. Methods: A three-arm (Prompt-30 or 60 min Intervention arm and a No-Prompt Comparison arm), quasi-randomised intervention was conducted over 12 weeks. Behavioural outcomes (worktime sitting, standing, stepping, prolonged sitting, and physical activity) were monitored using accelerometers and anthropometrics measured at baseline, 6 weeks and 12 weeks. Cardiometabolic measures were taken at baseline and 12 weeks. Results: Fifty-six office workers (64% female) completed baseline assessments. The Prompt-60 arm was associated with a reduction in occupational sitting time at 6 (-46.8 min/8 h workday [95% confidence interval = -86.4, -6.6], p < 0.05) and 12 weeks (-69.6 min/8 h workday [-111.0, -28.2], p < 0.05) relative to the No-Prompt Comparison arm. Sitting was primarily replaced with standing in both arms (p > 0.05). Both Intervention arms reduced time in prolonged sitting bouts at 12 weeks (Prompt-30: -27.0 [-99.0, 45.0]; Prompt-60: -25.8 [-98.4, 47.4] min/8 h workday; both p > 0.05). There were no changes in steps or cardiometabolic risk. Conclusions: Findings highlight the potential of a smartphone e-health application, suggesting 60 min prompts may present an optimal frequency to reduce total occupational sedentary behaviour. Funding: Get a Move On Network+, EPSRC, Grant Number EP/N027799/1.
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Copyright (c) 2021 Abigail S. Morris, Kelly Mackintosh, David Dunstan, Neville Owen, Paddy C. Dempsey, Thomas Pennington, Melitta A. McNarry
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