Strength of evidence from quantitative data
| Movement behaviour | Quality* | Quantity† | Consistency‡ | Strength of evidence§ |
| Physical activity (PA) | 2 good, 15 fair, 24 poor | 41 | Consistent: 32 studies (78.1%) reported a decrease in PA, 8 (19.5%) reported no significant change in PA, 1 (2.4%) reported an increase in PA during the lockdown | Moderate |
| Screen time | 2 good, 12 fair, 24 poor | 38 | Consistent: All studies (100%) reported an increase in screen time during the lockdown | Moderate |
| Sleep duration | 1 good, 14 fair, 14 poor | 29 | Inconsistent: 14 studies (48.3%) reported increased sleep duration, 13 (44.8%) reported no significant change in sleep duration, 2 (6.9%) reported decreased sleep duration | Inconclusive |
| Sleep quality | 1 good, 9 fair, 12 poor | 22 | Inconsistent: 9 studies (40.9%) reported decreased sleep quality, 8 (36.4%) reported no significant change in sleep quality, 5 (22.7%) reported an increase in sleep quality during the lockdown | Inconclusive |
*Quality score based on the National Institutes of Health tool.
†Number of studies.
‡Inconsistent: when ≤75% of the studies reported the same conclusion37
§Evidence based on quality, number and the outcome of the studies: strong=provided by generally consistent findings in multiple high-quality quantitative studies; moderate=generally consistent findings in one high-quality quantitative study and one low-quality study or in multiple low-quality studies; inconclusive=only one study available or inconsistent findings in multiple studies37