Department of Movement and Sport Sciences, Faculty of Medicine and Health Sciences, Ghent University, Watersportlaan 2, Gent, 9000, Belgium.
Int J Behav Nutr Phys Act. 2012 Dec 18;9:149. doi: 10.1186/1479-5868-9-149.
From a health perspective it is suggested to promote a positive balance between time spent in light intensity physical activity (LIPA) and sedentary behaviour (SB) (i.e. spending more time in LIPA than time spent in SB). However, no studies have reported prevalence rates of the LIPA-SB balance yet. The aim of this study was to objectively investigate the time spent in SB, in LIPA and moderate-to-vigorous intensity physical activity (MVPA) in four Belgian age groups and to explore which proportion of the population had a favorable balance between LIPA and SB and combined this with recommended amount of MVPA.
Accelerometer data from 7 cross-sectional studies (N=2083) in four age groups (preschoolers, primary schoolchildren, secondary schoolchildren and adults) were aggregated. Differences in SB and PA between age groups and between men and women were determined by two-way MANCOVA. LIPA-SB balance was calculated and participants were categorized into one of four groups: (1) positive LIPA-SB balance (LIPA> SB) & sufficient MVPA (2) negative LIPA-SB balance & sufficient MVPA (3) positive LIPA-SB balance & insufficient MVPA (4) negative LIPA-SB balance & insufficient MVPA.
For the total sample, 55% of the waking time was spent in SB, 39% in LIPA and 6% in MVPA. Differences in SB between age groups was dependent from gender (p<0.001). Further, a positive LIPA-SB balance was assessed in 18% of the total sample and only 10% combined this positive balance with recommended amount of MVPA. Secondary schoolgirls were most at risk, with only 1% of the sample combining a positive LIPA-SB balance with sufficient MVPA. Another risk group was the large proportion (43%) of adult men who combined sufficient MVPA with a negative LIPA-SB balance.
A high proportion of the Belgian population is at risk if taking into account both SB and PA levels. Secondary schoolgirls have the unhealthiest SB and PA profile and are therefore an important target group for interventions both increasing MVPA and decreasing SB. In men more attention should be given in promoting a positive LIPA-SB balance independently from their compliance with the MVPA guidelines.
从健康角度来看，建议促进轻强度体力活动（LIPA）和久坐行为（SB）之间的积极平衡（即花费更多时间在 LIPA 上，而不是在 SB 上）。然而，目前还没有研究报告 LIPA-SB 平衡的流行率。本研究的目的是客观地调查四个比利时年龄组的 SB、LIPA 和中高强度体力活动（MVPA）的时间，并探讨有多少人口在 LIPA 和 SB 之间存在有利的平衡，并将其与推荐的 MVPA 量相结合。
汇总了四个年龄组（学龄前儿童、小学生、中学生和成年人）的 7 项横断面研究的加速度计数据（N=2083）。使用双向 MANCOVA 确定年龄组之间以及男女之间的 SB 和 PA 差异。计算 LIPA-SB 平衡，并将参与者分为以下四组之一：（1）LIPA-SB 平衡呈正（LIPA>Sb）且 MVPA 充足；（2）LIPA-SB 平衡呈负但 MVPA 充足；（3）LIPA-SB 平衡呈正但 MVPA 不足；（4）LIPA-SB 平衡呈负且 MVPA 不足。
对于总样本，清醒时间的 55%用于 SB，39%用于 LIPA，6%用于 MVPA。年龄组之间的 SB 差异取决于性别（p<0.001）。此外，总样本中有 18%呈现出 LIPA-SB 平衡，只有 10%的人将这种积极的平衡与推荐的 MVPA 量相结合。中学女生是风险最高的群体，只有 1%的样本将 LIPA-SB 平衡与充足的 MVPA 相结合。另一个风险群体是大量（43%）成年男性，他们将充足的 MVPA 与负的 LIPA-SB 平衡相结合。
如果同时考虑 SB 和 PA 水平，比利时有很大一部分人口处于危险之中。中学女生的 SB 和 PA 状况最不健康，因此是增加 MVPA 和减少 SB 的重要干预目标群体。对于男性，应更加关注促进 LIPA-SB 平衡，而不必遵守 MVPA 指南。
