Effects of engaging in mass participation sporting events on physical activity behaviour,: a systematic review.

Mass participation sporting events can be attractive to low-active participants as well as regular exercisers, with a notable proportion identified as low active (one-fifth). Overall levels of physical activity tend to decline after event completion, suggesting that training in preparation for events was not maintained. There is some evidence of increased exercise post-event reported among novice participants, though evidence is limited on effective ways to sustain exercise after event completion. Regularly held events such as parkrun or booster interventions following events helped maintain exercise levels over 12 months.