“…Some of the conducted studies are of a cross-sectional character [ 34 , 35 , 38 , 39 , 42 , 44 , 46 , 52 , 61 , 63 , 68 ] and some include interventions of various kinds [ 4 , 5 , 15 , 16 , 31 , 32 , 37 , 40 , 41 , 43 , 45 , 50 , 51 , 57 , 60 , 62 , 64 , 65 , 66 , 67 , 69 , 70 ]. While this does not influence the direction of the results, it does impact things such as the effect size or the correlation coefficients.…”