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Differences between work and leisure in temporal patterns of objectively measured physical activity among blue-collar workers.

Hallman DM, Mathiassen SE, Gupta N, Korshøj M, Holtermann A - BMC Public Health (2015)

Bottom Line: Leisure time physical activity (LTPA) is generally associated with favorable cardiovascular health outcomes, while occupational physical activity (OPA) shows less clear, or even opposite, cardiovascular effects.We found that the temporal patterns of OPA and LTPA among blue-collar workers were markedly different even after adjustment for total physical activity time, and that this difference was modified by gender.We recommend using EVA derivatives in future studies striving to disentangle the apparent paradoxical cardiovascular effect of physical activity at work and during leisure.

View Article: PubMed Central - PubMed

Affiliation: Centre for Musculoskeletal Research, Department of Occupational and Public Health Sciences, University of Gävle, Kungsbäcksvägen 47, SE 801 76, Gävle, Sweden. david.hallman@hig.se.

ABSTRACT

Background: Leisure time physical activity (LTPA) is generally associated with favorable cardiovascular health outcomes, while occupational physical activity (OPA) shows less clear, or even opposite, cardiovascular effects. This apparent paradox is not sufficiently understood, but differences in temporal patterns of OPA and LTPA have been suggested as one explanation. Our aim was to investigate the extent to which work and leisure (non-occupational time) differ in temporal activity patterns among blue-collar workers, and to assess the modification of these patterns by age and gender.

Methods: This study was conducted on a cross-sectional sample of male (n = 108) and female (n = 83) blue-collar workers, aged between 21 and 65 years. Physical activity and sedentary behavior were assessed using accelerometers (Actigraph GT3X+) worn on the thigh and trunk for four consecutive days. Temporal patterns of OPA and LTPA were retrieved using Exposure Variation Analysis (EVA), and expressed in terms of percentage of work and leisure time spent in uninterrupted periods of different durations (<1 min, 1-5 min, 5-10 min, 10-30 min, 30-60 min and > 60 min) of sitting, standing, and walking. Repeated measures ANOVA and linear regression analyses were used to test a) possible differences between OPA and LTPA in selected EVA derivatives, and b) the modification of these differences by age and gender.

Results: OPA showed a larger percentage time walking in brief (<5 min) periods [mean (SD): 33.4 % (12.2)], and less time in prolonged (>30 min) sitting [7.0 % (9.3)] than LTPA [walking 15.4 % (5.0); sitting 31.9 % (15.3)], even after adjustment for the difference between work and leisure in total time spent in each activity type. These marked differences in the temporal pattern of OPA and LTPA were modified by gender, but not age.

Conclusion: We found that the temporal patterns of OPA and LTPA among blue-collar workers were markedly different even after adjustment for total physical activity time, and that this difference was modified by gender. We recommend using EVA derivatives in future studies striving to disentangle the apparent paradoxical cardiovascular effect of physical activity at work and during leisure.

No MeSH data available.


Related in: MedlinePlus

Associations between the four selected EVA derivatives (rows, y-axes) and total accumulated time (x-axes) in different activity types at work (left) and during leisure (right). The linear regression equation is shown in each plot; all N = 191
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Fig3: Associations between the four selected EVA derivatives (rows, y-axes) and total accumulated time (x-axes) in different activity types at work (left) and during leisure (right). The linear regression equation is shown in each plot; all N = 191

Mentions: The EVA derivatives were positively associated with total time spent in each activity type, and these associations appeared different for work and leisure (Fig. 3). For OPA, clear positive associations (Fig. 3) were found for BB standing (r2 = .99) and BB walking (r2 = .96) with total time standing and walking, respectively. Prolonged sitting and walking >10 min were also positively associated with total time, but the residual variance in EVA metrics at any particular total time were considerably larger than for the BB metrics (r2 = .40 and r2 = .10, respectively). For LTPA, all EVA derivatives showed positive associations with total time spent in the corresponding activity type, and as for work, residual variance was smaller for the BB metrics (BB standing, r2 = .99; BB walking, r2 = .93; walking >10 min, r2 = .20; prolonged sitting, r2 = .69). There were no clear associations between values during work and leisure for any EVA derivative (r ranged between -.05 and .08; all with p > .05).Fig. 3


Differences between work and leisure in temporal patterns of objectively measured physical activity among blue-collar workers.

Hallman DM, Mathiassen SE, Gupta N, Korshøj M, Holtermann A - BMC Public Health (2015)

Associations between the four selected EVA derivatives (rows, y-axes) and total accumulated time (x-axes) in different activity types at work (left) and during leisure (right). The linear regression equation is shown in each plot; all N = 191
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4587719&req=5

Fig3: Associations between the four selected EVA derivatives (rows, y-axes) and total accumulated time (x-axes) in different activity types at work (left) and during leisure (right). The linear regression equation is shown in each plot; all N = 191
Mentions: The EVA derivatives were positively associated with total time spent in each activity type, and these associations appeared different for work and leisure (Fig. 3). For OPA, clear positive associations (Fig. 3) were found for BB standing (r2 = .99) and BB walking (r2 = .96) with total time standing and walking, respectively. Prolonged sitting and walking >10 min were also positively associated with total time, but the residual variance in EVA metrics at any particular total time were considerably larger than for the BB metrics (r2 = .40 and r2 = .10, respectively). For LTPA, all EVA derivatives showed positive associations with total time spent in the corresponding activity type, and as for work, residual variance was smaller for the BB metrics (BB standing, r2 = .99; BB walking, r2 = .93; walking >10 min, r2 = .20; prolonged sitting, r2 = .69). There were no clear associations between values during work and leisure for any EVA derivative (r ranged between -.05 and .08; all with p > .05).Fig. 3

Bottom Line: Leisure time physical activity (LTPA) is generally associated with favorable cardiovascular health outcomes, while occupational physical activity (OPA) shows less clear, or even opposite, cardiovascular effects.We found that the temporal patterns of OPA and LTPA among blue-collar workers were markedly different even after adjustment for total physical activity time, and that this difference was modified by gender.We recommend using EVA derivatives in future studies striving to disentangle the apparent paradoxical cardiovascular effect of physical activity at work and during leisure.

View Article: PubMed Central - PubMed

Affiliation: Centre for Musculoskeletal Research, Department of Occupational and Public Health Sciences, University of Gävle, Kungsbäcksvägen 47, SE 801 76, Gävle, Sweden. david.hallman@hig.se.

ABSTRACT

Background: Leisure time physical activity (LTPA) is generally associated with favorable cardiovascular health outcomes, while occupational physical activity (OPA) shows less clear, or even opposite, cardiovascular effects. This apparent paradox is not sufficiently understood, but differences in temporal patterns of OPA and LTPA have been suggested as one explanation. Our aim was to investigate the extent to which work and leisure (non-occupational time) differ in temporal activity patterns among blue-collar workers, and to assess the modification of these patterns by age and gender.

Methods: This study was conducted on a cross-sectional sample of male (n = 108) and female (n = 83) blue-collar workers, aged between 21 and 65 years. Physical activity and sedentary behavior were assessed using accelerometers (Actigraph GT3X+) worn on the thigh and trunk for four consecutive days. Temporal patterns of OPA and LTPA were retrieved using Exposure Variation Analysis (EVA), and expressed in terms of percentage of work and leisure time spent in uninterrupted periods of different durations (<1 min, 1-5 min, 5-10 min, 10-30 min, 30-60 min and > 60 min) of sitting, standing, and walking. Repeated measures ANOVA and linear regression analyses were used to test a) possible differences between OPA and LTPA in selected EVA derivatives, and b) the modification of these differences by age and gender.

Results: OPA showed a larger percentage time walking in brief (<5 min) periods [mean (SD): 33.4 % (12.2)], and less time in prolonged (>30 min) sitting [7.0 % (9.3)] than LTPA [walking 15.4 % (5.0); sitting 31.9 % (15.3)], even after adjustment for the difference between work and leisure in total time spent in each activity type. These marked differences in the temporal pattern of OPA and LTPA were modified by gender, but not age.

Conclusion: We found that the temporal patterns of OPA and LTPA among blue-collar workers were markedly different even after adjustment for total physical activity time, and that this difference was modified by gender. We recommend using EVA derivatives in future studies striving to disentangle the apparent paradoxical cardiovascular effect of physical activity at work and during leisure.

No MeSH data available.


Related in: MedlinePlus