“…The 143 included papers studied 49 different clinical tests of physical function. 75 studies assessed the 6-minute walk test (6MWT) (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87). Fifteen studies analysed the incremental shuttle walk test (ISWT) (18, 37, 56, 58, 68, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97).…”