More real-world trials are needed to establish if web-based physical activity interventions are effective. Issue 24 (December 2019) - Vandelanotte, Corneel; Duncan, Mitch J; Kolt, Gregory S; Caperchione, Cristina M; Savage, Trevor N; Van Itallie, Anetta; Oldmeadow, Christopher; Alley, Stephanie J; Tague, Rhys; Maeder, Anthony J; Rosenkranz, Richard R; Mummery, W Kerry