From an article, from The Lancet Digital Health 1694410106

Question - What did the researchers do in this study?

Question - What databases did the researchers search for studies?

Question - How many studies did the researchers include in their review?

Question - What were the main outcomes examined in the studies?

Question - What were the main findings for physical activity outcomes?

Question - What were the findings for physiological outcomes like weight loss?

Question - What were the findings for psychosocial outcomes like quality of life?

Question - What was the overall conclusion of the review?

Read the article: Effectiveness of wearable activity trackers to increase physical activity and improve health: a systematic review of systematic reviews and meta-analyses