Table 2.

General characteristics of unsuccessful interventions.

Program Name Reference	Country	Study Design	Duration	Population Group	Parents’ Involvement	Teachers’ Training	Theoretical Model
							Social Cognitive Theory	Ecological Model	Health Promotion Model
Diet only
- Verdonschot et al., 2020 [28]	The Netherlands	non-randomized CT	6 months (follow-up: 6 months)	N = 1274, 7–12 years old	Χ
Project Daire Brennan et al., 2021 [29]	Ireland	RCT	6 months	N = 903, 6–7 and 10–11 years old
Taste Lessons Battjes-Fries MC et al., 2016 [27]	The Netherlands	non-randomized CT	6 months follow-up of 1mo and 6 months	N = 392, 8–12 years old		X
- Weber et al., 2020 [30]	Germany	non-randomized CT	3 days (follow-up: 3 months)	N = 305, 8–10 years old
Diet and PA
Extra Fit Kocken et al., 2016 [40]	Thw Netherlands	RCT	2 school years	N = 1112, 9–11 years old	X
KOP Mack et al., 2020 [41]	Germany	RCT	2 weeks (follow-up: 4 weeks)	N = 82 9–12 years