Sitting Time, Physical Activity and Sleep by Work Type and Pattern—The Australian Longitudinal Study on Women’s Health

Clark, Bronwyn; Kolbe-Alexander, Tracy; Duncan, Mitch J.; Brown, Wendy J.

doi:10.3390/ijerph14030290

Cited by 28 publications

(29 citation statements)

References 47 publications

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“…The participants in our study had sufficient sleep on night-shift and non-work days, but not on day-shift days. Increased sleep duration on non-work days is expected, and similar to findings from other studies that have investigated sleep duration in shift workers [23, 24]. One the other hand, sleeping more on night-shift days was unexpected, as we hypothesised that shift workers would sleep less when working night shift.…”

Section: Discussionsupporting

confidence: 85%

A hard day’s night: time use in shift workers

et al. 2019

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Background Differences in how shift workers accumulate physical activity (PA) while at work and in leisure time, on days when they are working at night, during the day, or on non-work days, are largely unexplored. The aim of this study was to improve understanding of physical activity patterns in two groups of shift workers, and to measure variations according to their shift schedules. Methods This pragmatic pilot study was conducted in two workplaces. Employees in Workplace 1 ( n = 10) were required to drive for most of their shift. Workplace 2 was a manufacturing company where most of the employees’ ( n = 30) occupational tasks were completed while standing. Use of time was assessed using the adult version of the Multimedia Activity Recall for Children and Adults (MARCA) administered by telephone interview. Three MARCA interviews were conducted with each participant, in order to capture a typical profile of a day-shift day, a night-shift day and a non-work day, using a two-day recall for each interview. Participants were asked to wear the activPAL3™ activity monitor, for 7 consecutive days. Paired and independent t-tests were used to compute significant differences between day-shift, night-shift and non-work days within and between workplaces. Results The total number of days quantified for the MARCA data was 192 days (64 day-shift, 60 night-shift and 68 non-work days). Workplace 2 participants reported more physical activity and less sedentary behaviour on day-shift and night shift days than on non-work days. Time spent in sedentary behaviour was similar on day-shift, night-shift and non-work days in Workplace 1. Workplace 1 participants were more sedentary ( p = 0.003) and engaged in more light intensity PA ( p = 0.031) on day-shift and night-shift workdays, than those from Workplace 2. Sleep times were lowest on day-shift days. Conclusion As the occupational tasks for participants in Workplace 2 involved physical activities, the findings do not support the conventional view that shift workers are more sedentary than those who only work during the day. Rather occupational tasks appear to be a more important determinant of physical activity patterns both on work and non-work days than varying shift patterns.

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Section: Discussionsupporting

confidence: 85%

A hard day’s night: time use in shift workers

et al. 2019

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“…Several cross-sectional studies have reported an association between shift work and less engagement in leisure-time physical activity (7)(8)(9), whereas others have found either no (10)(11)(12)(13) or a negative (14-16) association. Longitudinal studies are scarce; no association between 1-year changes in work schedule and changes in physical activity was discerned in one (17).…”

mentioning

confidence: 99%

Shift work and physical inactivity: findings from the Finnish Public Sector Study with objective working hour data

Cheng

Härmä²,

Ropponen³

et al. 2019

Scand J Work Environ Health

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We combined objective working hour data with surveys on physical activity over 17 years. Compared with day work, shift work without night shifts was associated with physical inactivity among men, whereas shift work with night shifts was negatively associated with physical inactivity among women and white-collar workers. Having small children was a risk factor for physical inactivity among shift workers.

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“…The integrated lifestyle approach used in this study confirms the significance of the interaction between global cardiac autonomic modulation and the vagal component. Although the lifestyle components have already been addressed in other studies [49,50,51], the analysis proposed here is innovative and relevant for future studies related with cardiovascular physiology and lifestyle interventions.…”

Section: Discussionmentioning

confidence: 99%

Sedentary Behavior: A Key Component in the Interaction between an Integrated Lifestyle Approach and Cardiac Autonomic Function in Active Young Men

Santos

Rosa

et al. 2019

IJERPH

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This study aimed to verify the association between autonomic cardiac function (CAF) and the integration of caloric expenditure by physical activity (PA) intensity, sedentary behavior (SB), and sleep quality (PSQI) in active young men. Thirty-five subjects were included, and caloric expenditure in moderate-to-vigorous and light-intensity PA, SB, and PSQI were assessed using questionnaires. Heart rate variability (HRV) was recorded for short periods of time in the supine and orthostatic positions. Multiple linear regression was realized unadjusted and adjusted for covariables, such as age, body mass index, and fat mass. No adjusted analysis indicated that, in the supine position, there were negative associations between the SB and the TP, HF, and NorHF indices, and positive associations between SB and NorLF and LF/HF. In the orthostatic position, an interaction between SB and NorLF was found. Significance of proportion with the TP, HF, and LF/HF indices was confirmed. When adjusted, for the supine position, negative interactions were documented between SB and the TP as well as the HF indices, and between PSQI and the LF/HF index, with interference under the HF and LF/HF indices. Finally, our findings indicate that the proposed approach interacts with CAF, and SB is significantly related to CAF in young active men.

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Sitting Time, Physical Activity and Sleep by Work Type and Pattern—The Australian Longitudinal Study on Women’s Health

Cited by 28 publications

References 47 publications

A hard day’s night: time use in shift workers

A hard day’s night: time use in shift workers

Shift work and physical inactivity: findings from the Finnish Public Sector Study with objective working hour data

Sedentary Behavior: A Key Component in the Interaction between an Integrated Lifestyle Approach and Cardiac Autonomic Function in Active Young Men

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