Association of Occupational and Leisure-Time Physical Activity with Aerobic Capacity in a Working Population

PLoS One. 2017 Jan 3;12(1):e0168683. doi: 10.1371/journal.pone.0168683. eCollection 2017.

Abstract

Introduction: Objective data on the association of maximal aerobic capacity (VO2max) with work related physical activity are sparse. Thus, it is not clear whether occupational physical activity (OPA) contributes to an increase of VO2max. This study examined the association of VO2max with work and non-work related physical activity in a Swiss working population.

Methods: In this cross-sectional study, a total of 337 healthy and full-time employed adults were recruited. Demographic data, height, weight and BMI were recorded in all subjects. Participants were classified into nine occupational categories (ISCO-88) and merged into three groups with low, moderate, and high OPA. Physical activity was objectively measured by the SenseWear Mini Armband on seven consecutive days (23 hours per day). Participants were regarded as sufficiently active when accumulating ≥30 min of moderate-to-vigorous physical activity per day. VO2max was evaluated using the multistage 20-meter shuttle run test.

Results: Data of 303 participants were considered for analysis (63% male, age 33 yrs, SD 12). Multiple linear regression analysis (adjusted R2 = 0.69) revealed significant positive associations of VO2max with leisure-time physical activity (LTPA) at vigorous intensity (β = 0.212) and sufficient moderate-to-vigorous physical activity (β = 0.100) on workdays. Female gender (β = -0.622), age (β = -0.264), BMI (β = -0.220), the ratio of maximum to resting heart rate (β = 0.192), occupational group (low vs. high OPA, β = -0.141), and smoking (β = -0.133) were also identified as independent predictors of VO2max.

Conclusions: The present results suggest that VO2max is positively associated with LTPA, but not with OPA on workdays. This finding emphasizes the need for employees to engage in sufficient high-intensity physical activity in recreation for maintaining or improving VO2max with regard to health benefits.

MeSH terms

  • Adolescent
  • Adult
  • Body Mass Index
  • Body Weight
  • Cross-Sectional Studies
  • Employment*
  • Exercise Test
  • Exercise Tolerance*
  • Exercise*
  • Female
  • Heart Rate
  • Humans
  • Leisure Activities*
  • Male
  • Middle Aged
  • Occupations
  • Physical Fitness*
  • Recreation
  • Regression Analysis
  • Young Adult

Grants and funding

This study was financially supported by an unrestricted grant of the Swiss National Accident Insurance Fund (Suva). Grant number: not applicable. URL: http://www.suva.ch. Recipient: JDL. The funder (Suva) provided support in the form of a project grant that covered salaries for the involved personnel at the Cantonal Hospital Baselland Liestal as well as expenses for infrastructure and conducting the study, but did not have any role in the study design, data collection and analysis, decision to publish, or preparation of this manuscript. The participation of DM in the study was independent from the project grant and is covered by the contractual agreement between Suva and DM that permits active participation in independently conducted research projects.