Buman Matthew P, Kline Christopher E, Youngstedt Shawn D, Phillips Barbara, Tulio de Mello Marco, Hirshkowitz Max
School of Nutrition and Health Promotion, Arizona State University, Phoenix, AZ.
Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA.
Chest. 2015 Mar;147(3):728-734. doi: 10.1378/chest.14-1187.
Excess sitting is emerging as a novel risk factor for cardiovascular disease, diabetes, mental illness, and all-cause mortality. Physical activity, distinct from sitting, is associated with better sleep and lower risk for OSA, yet relationships among sitting behaviors and sleep/OSA remain unknown. We examined whether total sitting time and sitting while viewing television were associated with sleep duration and quality, OSA risk, and sleepiness.
The 2013 National Sleep Foundation Sleep in America Poll was a cross-sectional study of 1,000 adults aged 23 to 60 years. Total sitting time, time watching television while sitting, sleep duration and quality, OSA risk, and daytime sleepiness were assessed.
After adjusting for confounding factors (including BMI and physical activity), each additional hour per day of total sitting was associated with greater odds of poor sleep quality (OR [95% CI] = 1.06 [1.01, 1.11]) but not with other sleep metrics (including sleep duration), OSA risk, or daytime sleepiness. For television viewing while sitting, each additional hour per day was associated with greater odds of long sleep onset latency (≥ 30 min) (OR = 1.15 [1.04, 1.27]), waking up too early in the morning (OR = 1.12 [1.03, 1.23]), poor sleep quality (OR = 1.12 [1.02, 1.24]), and "high risk" for OSA (OR = 1.15 [1.04, 1.28]). Based upon an interaction analysis, regular physical activity was protective against OSA risk associated with television viewing (P = .04).
Excess sitting was associated with relatively poor sleep quality. Sitting while watching television was associated with relatively poor sleep quality and OSA risk and may be an important risk factor for sleep disturbance and apnea risk.
久坐正成为心血管疾病、糖尿病、精神疾病及全因死亡率的一个新的风险因素。与久坐不同，身体活动与更好的睡眠及较低的阻塞性睡眠呼吸暂停（OSA）风险相关，但久坐行为与睡眠/OSA之间的关系仍不明确。我们研究了总久坐时间及看电视时的久坐是否与睡眠时间和质量、OSA风险及嗜睡有关。
2013年美国国家睡眠基金会的美国睡眠民意调查是一项针对1000名年龄在23至60岁成年人的横断面研究。评估了总久坐时间、坐着看电视的时间、睡眠时间和质量、OSA风险及白天嗜睡情况。
在对混杂因素（包括体重指数和身体活动）进行调整后，每天总久坐时间每增加1小时，睡眠质量差的几率就更高（比值比[95%置信区间]=1.06[1.01,1.11]），但与其他睡眠指标（包括睡眠时间）、OSA风险或白天嗜睡无关。对于坐着看电视，每天每增加1小时与入睡潜伏期长（≥30分钟）的几率更高（比值比=1.15[1.04,1.27]）、早晨过早醒来（比值比=1.12[1.03,1.23]）、睡眠质量差（比值比=1.12[1.02,1.24]）及OSA“高风险”（比值比=1.15[1.04,1.28]）相关。基于交互分析，规律的身体活动可预防与看电视相关的OSA风险（P=0.04）。
久坐与相对较差的睡眠质量相关。坐着看电视与相对较差的睡眠质量及OSA风险相关，可能是睡眠障碍和呼吸暂停风险的一个重要风险因素。
