Table 5.

Duration and monitoring of the intervention.

STUDIES	Monitoring and Evaluation of Variables	WEEKS
		0	3	4	5	6	8	12	26
	Maenhout, A. et al. [33]	√				√		√
	Blume, C. et al. [34]	√			√		√
	Granvinken, F. et al. [35]	√				√			√
	Chaconas, E. J. et al. [36]	√	√			√			√
	Heron, S. et al. [23]	√				√
	Dejaco, B. et al. [24]	√				√		√	√
	Vallés-Carrascosa, E. et al. [22]	√		√
	Bourdreau, N. et al. [37]	√	√			√

End of intervention; √: Time of evaluation of the variables.