Table 1 The relationship between movement behaviours and adiposity
No. of studies | Design | Quality assessment | No. of participants | Absolute effect | Quality | ||||
|---|---|---|---|---|---|---|---|---|---|
Risk of bias | Inconsistency | Indirectness | Imprecision | Other | |||||
Mean baseline ages ranged from 3.29-4.97聽years. One study had exposure measurements as early as 6聽months (no average provided) but averaged several exposure measurements over 2聽years. Data were collected by clustered RCT (n聽=聽2), non-randomized intervention (n聽=聽1), longitudinal (n聽=聽2), and cross-sectional (n聽=聽3) study designs. All height-for-weight indices of adiposity were objectively measured except in one study, which did not clearly indicate how measurement occurred. Other indicators of adiposity were assessed via bioelectrical impedance, and skinfold thickness (subscapular and tricep surae). | |||||||||
2 | Cluster RCTa | Serious risk of biasb | No serious inconsistency | Serious indirectnessc | No serious imprecision | None | 1245 | 厂叠听+听笔础: The movement behaviour interventions were not associated with changes in weight-for-height indices in 2 studies [27, 28]. The movement behaviour intervention was favourably associated with body fat in 1 study [28]. | LOWd |
1 | Non-randomized interventione | Serious risk of biasf | No serious inconsistency | No serious indirectness | No serious imprecision | None | 86 | 厂叠听+听笔础: The movement behaviour intervention was favourably associated with BMI reduction in toddlers, but not in the preschool-aged sample [29]. | VERY LOWg |
2 | Longitudinalh | Serious risk of biasi | No serious inconsistency | Serious indirectnessj | No serious imprecision | Dose-response & large magnitude of an effect k | 1827 | 厂叠听+听笔础: Classification based on SB聽+聽PA variables was not associated with BMI percentile over 2聽years in 1 study [30]. 厂尝贰贰笔听+听厂叠: High levels of sleep and low levels of TV time were favourably associated with BMI-z scores, sum of skinfold thickness, and overweight status, and not associated with skinfold thickness ratio when compared to low levels of sleep and high levels of TV time in 1 study [36]. High levels of sleep and low levels of TV time were favourably associated with BMI-z score, and not associated with sum of skinfold thickness, overweight status, and skinfold thickness ratio when compared to low levels of sleep, and low levels of TV time in 1 study [36]. High levels of sleep and low levels of TV time were not associated with BMI-z score, sum of skinfold thickness, overweight status, and skinfold thickness ratio when compared to high levels of sleep and high levels of TV time in 1 study [36]. | VERY LOWl |
3 | Cross-sectionalm | Serious risk of biasn | No serious inconsistency | No serious indirectness | No serious imprecision | None | 3888 | 厂叠听+听笔础: Children with high amounts of SB and low amounts of PA were favourably associated with obesity classification in 1 study [33] and not associated with obesity classification in 2 studies [34, 35]. | VERY LOWo |