Table 2.

Certainty of the evidence (artificial intelligence for increasing physical activity [PA]).

Outcome	Effect	Participants (studies)	Certainty of the evidence (GRADEa)b	Comment
Increased number of steps, distance walked, or time spent on PA Follow-up: mean 9.4 weeks	Increased walked distance [36] exceeded step goal [28] more steps [32] increased walking minutes [39] increased time spent on PA [38]	n=260 (3 pre-post studies, 1 RCTc, and 1 observational study)	B: moderate	We have a moderate level of confidence that the actual impact closely aligns with the estimated effect.
Change in PA behavior and abilities to perform behavior Follow-up: mean 13.3 weeks	Feeling more stimulated to engage in PAs [30] change in walking behaviors [25] improved behaviors related to PA [35] improved ability to do sports [37]	n=98 reported (number not explicitly reported in 2 studies) 3 RCTs, 1 pre-post study	D: very low	We have a very low level of confidence in the estimated effect.

^aGRADE: Grading of Recommendations Assessment, Development, and Evaluation.

^bScale of 4 degrees, where A denotes the highest quality and D denotes the lowest quality.

^cRCT: randomized controlled trial.