Carr Lucas J, Swift Maggie, Ferrer Alex, Benzo Roberto
Behavioral Medicine Laboratory, Department of Health and Human Physiology, University of Iowa, Iowa City, Iowa.
Behavioral Medicine Laboratory, Department of Health and Human Physiology, University of Iowa, Iowa City, Iowa.
Am J Prev Med. 2016 Jan;50(1):96-100. doi: 10.1016/j.amepre.2015.07.013. Epub 2015 Oct 1.
Prolonged sedentary behavior is an independent risk factor for many negative health outcomes. Although many employers have begun introducing sit-stand desks as means of reducing employee's occupational sitting time, few studies have examined the impact of prolonged access to such desks on sitting/standing time or cardiometabolic outcomes. The present study compared occupational sedentary/physical activity behaviors and cardiometabolic biomarkers among employees with long-term access to traditional sitting and sit-stand desks.
This study used a naturalistic, cross-sectional study design. Occupational sedentary and physical activity behaviors and cardiometabolic health outcomes were collected in a controlled laboratory between February and June 2014. Data were analyzed in September 2014. Adults working in full-time sedentary desk jobs who reported having either a sit-stand desk (n=31) or standard sitting desk (n=38) for a minimum of 6 months were recruited.
Employees with sit-stand desks sat less (p=0.02) and stood more at work (p=0.01) compared with employees with sitting desks. Significant inverse correlations were observed between several occupational physical activity outcomes (walking time, steps at work) and cardiometabolic risk factors (systolic blood pressure, weight, lean mass, BMI) over the entire sample.
Employees with long-term access to sit-stand desks sat less and stood more compared with employees with sitting desks. These findings hold public health significance, as sit-stand desks represent a potentially sustainable approach for reducing sedentary behavior among the large, growing number of sedentary workers at increased risk for sedentariness-related pathologies.
长时间久坐行为是许多负面健康结果的独立危险因素。尽管许多雇主已开始引入坐站两用办公桌，以减少员工的职业久坐时间，但很少有研究探讨长期使用此类办公桌对坐/站时间或心脏代谢指标的影响。本研究比较了长期使用传统坐式办公桌和坐站两用办公桌的员工的职业久坐/身体活动行为及心脏代谢生物标志物。
本研究采用自然主义横断面研究设计。2014年2月至6月期间，在一个受控实验室中收集职业久坐和身体活动行为以及心脏代谢健康指标。2014年9月对数据进行分析。招募从事全职久坐办公工作、报告使用坐站两用办公桌（n = 31）或标准坐式办公桌（n = 38）至少6个月的成年人。
与使用坐式办公桌的员工相比，使用坐站两用办公桌的员工坐着的时间更少（p = 0.02），工作时站立的时间更多（p = 0.01）。在整个样本中，观察到几种职业身体活动指标（步行时间、工作步数）与心脏代谢危险因素（收缩压、体重、瘦体重、BMI）之间存在显著的负相关。
与使用坐式办公桌的员工相比，长期使用坐站两用办公桌的员工坐着的时间更少，站立的时间更多。这些发现具有公共卫生意义，因为坐站两用办公桌是一种潜在的可持续方法，可减少大量越来越多久坐不动的员工的久坐行为，这些员工患久坐相关疾病的风险增加。
