Liangruenrom Nucharapon, Dumuid Dorothea, Pedisic Zeljko, Widyastari Dyah Anantalia, Wongpipit Waris, Katewongsa Piyawat
Institute for Population and Social Research, Mahidol University, Phutthamonthon, Nakhon Pathom, Thailand.
Allied Health & Human Performance, Alliance for Research in Exercise, Nutrition and Activity, University of South Australia, Adelaide, Australia.
BMC Public Health. 2025 May 20;25(1):1861. doi: 10.1186/s12889-025-23165-6.
Adiposity and low physical fitness are critical public health issues, particularly when taking into consideration the worldwide shift from active to sedentary lifestyles. Thus, the aim of this study was to determine how reallocations of time between sleep, sedentary behaviour (SB), light physical activity (LPA), and moderate-to-vigorous physical activity (MVPA) are associated with adiposity and physical fitness among Thai urban employees.
Cross-sectional data were collected from a random sample of 424 adults working in Bangkok. Daily durations of SB, LPA, and MVPA were estimated using accelerometers, while sleep duration was obtained from sleep logs. We used body mass index (BMI), percent body fat, and waist circumference as adiposity indicators and maximum oxygen consumption (VO), dynamometer-measured handgrip, back and leg strength, and flexibility assessed using sit-and-reach test as fitness indicators.
Reallocating 15 min/day to SB from the remaining behaviours was associated with on average 0.19 mL/kg/min (95% confidence interval [CI]: -0.35, -0.03) lower VO. Reallocating 15 min/day to LPA from the remaining behaviours was associated with on average 0.15 kg/m (95% CI: 0.03, 0.27) higher BMI and 0.34 cm (95% CI: 0.01, 0.67) greater waist circumference. Reallocating 15 min/day to MVPA from the remaining behaviours was associated with on average 1.52 cm (95% CI: -2.85, -0.19) smaller waist circumference and 1.77 cm (95% CI: 0.69, 2.85) greater flexibility.
There is a beneficial association of reallocating more time to MVPA with adiposity and fitness, and a detrimental association of reallocating more time to SB and LPA with adiposity.
肥胖和低身体素质是关键的公共卫生问题，尤其是考虑到全球范围内从积极生活方式向久坐生活方式的转变。因此，本研究的目的是确定睡眠、久坐行为（SB）、轻度身体活动（LPA）和中度至剧烈身体活动（MVPA）之间的时间重新分配如何与泰国城市员工的肥胖和身体素质相关联。
从曼谷随机抽取424名在职成年人收集横断面数据。使用加速度计估计SB、LPA和MVPA的每日时长，而睡眠时间则从睡眠日志中获取。我们使用体重指数（BMI）、体脂百分比和腰围作为肥胖指标，以及最大耗氧量（VO）、测力计测量的握力、背部和腿部力量，以及使用坐位体前屈测试评估的柔韧性作为身体素质指标。
从其他行为中每天重新分配15分钟给SB与VO平均降低0.19毫升/千克/分钟（95%置信区间[CI]：-0.35，-0.03）相关。从其他行为中每天重新分配15分钟给LPA与BMI平均升高0.15千克/米（95%CI：0.03，0.27）和腰围增加0.34厘米（95%CI：0.01，0.67）相关。从其他行为中每天重新分配15分钟给MVPA与腰围平均减小1.52厘米（95%CI：-2.85，-0.19）和柔韧性增加1.77厘米（95%CI：0.69，2.85）相关。
将更多时间重新分配给MVPA与肥胖和身体素质之间存在有益关联，而将更多时间重新分配给SB和LPA与肥胖之间存在有害关联。
