Bennie Jason A, Pedisic Zeljko, Timperio Anna, Crawford David, Dunstan David, Bauman Adrian, van Uffelen Jannique, Salmon Jo
Institute of Sport, Exercise and Active Living (ISEAL), Victoria University.
Prevention Research Collaboration, School of Public Health, University of Sydney, New South Wales.
Aust N Z J Public Health. 2015 Jun;39(3):237-42. doi: 10.1111/1753-6405.12293. Epub 2014 Dec 28.
To describe the total and domain-specific daily sitting time among a sample of Australian office-based employees.
In April 2010, paper-based surveys were provided to desk-based employees (n=801) in Victoria, Australia. Total daily and domain-specific (work, leisure-time and transport-related) sitting time (minutes/day) were assessed by validated questionnaires. Differences in sitting time were examined across socio-demographic (age, sex, occupational status) and lifestyle characteristics (physical activity levels, body mass index [BMI]) using multiple linear regression analyses.
The median (95% confidence interval [CI]) of total daily sitting time was 540 (531-557) minutes/day. Insufficiently active adults (median=578 minutes/day, [95%CI: 564-602]), younger adults aged 18-29 years (median=561 minutes/day, [95%CI: 540-577]) reported the highest total daily sitting times. Occupational sitting time accounted for almost 60% of total daily sitting time. In multivariate analyses, total daily sitting time was negatively associated with age (unstandardised regression coefficient [B]=-1.58, p<0.001) and overall physical activity (minutes/week) (B=-0.03, p<0.001) and positively associated with BMI (B=1.53, p=0.038).
Desk-based employees reported that more than half of their total daily sitting time was accrued in the work setting.
Given the high contribution of occupational sitting to total daily sitting time among desk-based employees, interventions should focus on the work setting.
描述澳大利亚办公室职员样本中总的及特定领域的每日久坐时间。
2010年4月，向澳大利亚维多利亚州的伏案工作员工（n = 801）发放纸质调查问卷。通过经过验证的问卷评估每日总的及特定领域（工作、休闲时间和交通相关）的久坐时间（分钟/天）。使用多元线性回归分析，研究久坐时间在社会人口统计学（年龄、性别、职业状况）和生活方式特征（身体活动水平、体重指数[BMI]）方面的差异。
每日总久坐时间的中位数（95%置信区间[CI]）为540（531 - 557）分钟/天。身体活动不足的成年人（中位数 = 578分钟/天，[95%CI：564 - 602]）以及18 - 29岁的年轻人（中位数 = 561分钟/天，[95%CI：540 - 577]）报告的每日总久坐时间最长。职业久坐时间占每日总久坐时间的近60%。在多变量分析中，每日总久坐时间与年龄（未标准化回归系数[B] = -1.58，p < 0.001）和总体身体活动（分钟/周）（B = -0.03，p < 0.001）呈负相关，与BMI（B = 1.53，p = 0.038）呈正相关。
伏案工作的员工报告称，他们每日总久坐时间的一半以上是在工作环境中积累的。
鉴于职业久坐对伏案工作员工每日总久坐时间的贡献很大，干预措施应侧重于工作环境。
