Table 1.

The methodological quality of each study included in the review based on the Quality Index Scale and divided according to study design (acute and chronic effects).

Item Code	1	2	3	6	7	10	12	15	16	18	20	22	23	25	Final Score (14 Items)
Study	Acute Effect
Cochrane et al. [33]	1	1	1	1	1	0	1	U	1	1	0	1	U	1	0.83
Fleddermann and Zentgraf [34]	1	1	1	1	1	1	0	U	1	1	1	1	U	1	0.92
Gutierrez-Davila et al. [35]	1	1	1	1	1	0	0	U	1	1	0	1	U	1	0.75
Helm et al. [36]	1	1	1	1	1	1	0	U	1	1	0	1	U	1	0.83
Howell et al. [37]	1	1	1	0	1	1	1	U	1	1	1	0	U	1	0.83
Howell et al. [38]	1	0	1	1	1	1	1	U	1	1	1	1	U	0	0.83
Laurin and Finez [12]	1	1	1	1	0	1	1	U	1	0	0	1	U	1	0.75
Lynall et al. [39]	1	1	1	1	1	1	0	U	1	1	1	1	U	1	0.92
Qiu et al. [40]	1	1	1	1	1	1	0	U	1	1	1	1	U	1	0.92
Runswick et al. [41]	1	1	1	1	1	1	0	U	1	1	1	1	1	1	0.92
Schaefer and Scornaienchi [42]	1	1	1	1	0	1	1	U	1	1	1	1	U	1	0.92
Tapper et al. [43]	1	1	1	1	1	1	0	U	1	1	1	1	U	1	0.92
Van Biesen et al. [44]	1	1	1	1	1	1	1	U	1	1	1	1	U	1	1
Chronic Effect
Ducrocq et al. [45]	1	1	1	1	1	1	1	U	1	1	1	1	1	1	1
Fleddermann et al. [21]	1	1	1	1	1	1	1	U	1	1	1	1	U	1	1
Harris et al. [46]	1	1	1	1	1	1	1	U	1	1	1	1	U	1	1
Romeas et al. [25]	1	1	1	1	0	1	0	U	1	1	U	U	U	1	0.8
Romeas et al. [26]	1	1	1	1	0	1	0	U	1	1	U	U	U	1	0.8