Table 3.

Intervention Types.

	Intervention Led by	Int.1	Int.2	Int.3	Int.4	Int.5	Int.6
Woo et al., 2020 [27]	Health administrators, doctors and nutritionists	x	x	x	x		x
Kempf et al., 2019 [28]	Diabetes nurses trained in mental and motivational coaching			x	x		x
Shrivastava et al., 2017 [29]	Physicians, nutritionist and physical trainer	x			x	x	x
Proeschold-Bell et al., 2017 [30]	Intervention health coaches	x		x		x	x
Steinberg et al., 2015 [31]	Personal coaches and client care managers		x	x	x		x
Kramer et al., 2015 [32]	Trained prevention professionals as lifestyle coaches and a nurse practitioner	x	x		x		x
Puhkala al, 2015 [33]	Nutritionists and a physiotherapist	x	x		x	x	x
Inoue et al., 2014 [34]	Cook in staff cafeteria		x
Chen et al., 2013 [35]	Health management expert		x		x		x
Allen et al., 2012 [36]	Lifestyle professionals	x		x			x
Nanri et al., 2012 [37]	Trained occupational health nurse	x		x	x
Maruyama et al., 2010 [38]	Dietitian and physical trainer (certified health counsellors for the program)		x	x	x		x
Racette et al., 2009 [39]	Dietitian and exercise specialist		x	x	x		x

Int.1: basic education and general counselling on healthy living and diet; Int.2: specific diet/changes in diet and food intake; Int.3: behavioural changes/coaching; Int.4: physical exercise education and/or training; Int.5: stress and/or sleep management; Int.6: internet/social networks; x: the study included this type of intervention.