“…In one article, the age of the study population was not mentioned [ 33 ]. There were 18 randomized controlled trials [ 1 , 4 , 6 , 7 , 10 , 12 , 14 , 15 , 18 , 19 , 23 , 25 , 26 , 29 – 31 , 34 , 35 ] and 18 randomized crossover trials [ 2 , 5 , 8 , 9 , 11 , 16 , 17 , 20 – 22 , 24 , 27 , 28 , 32 , 33 , 36 , 37 , 50 ]. The experimental trials were conducted in Belgium (n = 2), France (n = 3), Ireland (n = 1), Portugal (n = 1), United Kingdom (n = 6), Australia (n = 14), Brazil (n = 2), United States (n = 4), Taiwan (n = 1) and Japan (n = 2).…”