UCL Great Ormond Street Institute of Child Health, UK.
UCL Great Ormond Street Institute of Child Health, UK.
J Sci Med Sport. 2018 Jul;21(7):720-726. doi: 10.1016/j.jsams.2017.11.010. Epub 2017 Nov 22.
Physical inactivity is highly prevalent. Knowledge is needed of influences on inactive lifestyles. We aimed to establish whether early adult factors predict subsequent inactivity patterns in mid-adulthood.
Leisure-time inactivity (activity frequency<1/week) was assessed at 33y and 50y in the 1958 British Birth cohort (N=12,271).
We assessed associations of early adult (23-33y) physical status, mental function, social, family and neighbourhood circumstances with four 33-50y patterns (never inactive, persistently inactive, deteriorating or improving) using multinomial logistic regression with and without adjustment for childhood factors (e.g. social class).
Inactivity prevalence was similar at 33y and 50y (∼31%), but 17% deteriorated and 18% improved with age. Factors associated with persistent vs never inactive were: limiting illness (relative risk ratio (RRR):1.21(1.04,1.42) per number of ages exposed (0,1 or 2 times across ages 23y and 33y), obesity (1.33(1.16,1.54) per number of ages exposed), height (0.93(0.89,0.98) per 5cm), depression (1.32(1.19,1.47) per number of ages exposed); education (1.28(1.20,1.38) per decrease on 5-point scale) and neighbourhood (1.59(1.37,1.86) in 'industrial/local authority housing areas' and 1.33(1.12,1.58) in 'growth/metropolitan inner areas' vs 'suburbs, service, rural or seaside areas'). Associations were broadly similar for inactivity deterioration. Industrial/local authority housing areas (0.75(0.61,0.91)) and longer obesity exposure (0.78(0.64,0.95)) were associated with lower RRRs for improvement. Number of children was associated with improvement, although associations varied by age. Associations remained after adjustment for childhood factors.
Several early adult factors are associated with inactivity persistence and deterioration; fewer with improvement. Obesity duration and neighbourhood lived in during young adulthood had long-lasting associations with inactivity patterns in mid-life.
身体活动不足的现象非常普遍。需要了解影响人们不活跃生活方式的因素。我们旨在确定成年早期的因素是否可以预测中年以后的不活跃模式。
在 1958 年英国出生队列中，于 33 岁和 50 岁时评估休闲时间不活动（活动频率<1/周）。
我们使用多项逻辑回归评估了成年早期（23-33 岁）的身体状况、精神功能、社会、家庭和邻里环境与四种 33-50 岁模式（从不不活跃、持续不活跃、恶化或改善）之间的关联，包括对儿童时期因素（例如社会阶层）的调整和不调整。
不活跃的患病率在 33 岁和 50 岁时相似（约 31%），但有 17%的人随着年龄的增长而恶化，18%的人有所改善。与持续不活跃相比，与持续不活跃相关的因素包括：限制疾病（每个年龄段暴露的相对风险比（RRR）：23 岁和 33 岁时暴露的年龄次数每增加一次，RRR 为 1.21（1.04，1.42））肥胖（RRR：1.33（1.16，1.54）每暴露年龄增加一次），身高（每增加 5cm，RRR：0.93（0.89，0.98）），抑郁（RRR：1.32（1.19，1.47）每暴露年龄增加一次）；教育（RRR：每减少 5 分，RRR：1.28（1.20，1.38））和邻里（RRR：在“工业/地方当局住房区”为 1.59（1.37，1.86），在“增长/大都市区内区”为 1.33（1.12，1.58））与“郊区、服务、农村或海滨地区”）。与不活跃恶化相关的关联大致相似。在工业/地方当局住房区（RRR：0.75（0.61，0.91））和肥胖暴露时间更长（RRR：0.78（0.64，0.95））与改善的较低 RRR 相关。儿童人数与改善有关，尽管关联因年龄而异。调整儿童时期因素后，关联仍然存在。
一些成年早期的因素与不活跃的持续和恶化有关，而与改善有关的因素较少。肥胖持续时间和成年早期居住的邻里环境与中年以后的不活跃模式有长期关联。
