Study (exercise method) | Sample size n | Breathlessness (n = 24) | Walk distance (n = 16) | Endurance (n = 39) |
Babb [28] (CPET) | 10 | × | NA | × |
Eves [29] (CPET) | 10 | × | NA | × |
Johnson [30] (CPET) | 39 | ✓ | ✓ | ✓ |
Laude [31] (ISW) | 21 | × | ✓ | × |
Marciniuk [32](6MWT) | 16 | × | ✓ | × |
Oelberg [33] (CPET) | 18 | × | NA | × |
Palange [34] (CPET) | 12 | × | NA | × |
Richardson [35] (CPET) | 10 | × | NA | × |
CPET: cardiopulmonary exercise testing; ISW: incremental shuttle walking; 6MWT: 6-min walk test; ×: insufficient sample size to determine statistical significance; ✓: sufficient sample size to determine statistical significance; NA: not applicable.