Table 5.

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