4. Table of study characteristics outcomes: functional and maximum exercise capacity.
| Author | Outcome domain | Outcome measure | Time points in months (time frame) | Data presented | Pooled |
| Bendstrup 1997 | functional exercise capacity | 6MWD | 1 (ST); 3 (ST); 6 (ST) | mean change, SEM, group/P value | Yes |
| Bernocchi 2017 | functional exercise capacity | 6MWD | 4 (ST); | mean change, 95% CI, N/group | Yes |
| Bourbeau 2003 | functional exercise capacity | 6MWD | 4 (ST); 12 (MT) | not reported | No |
| Boxall 2005 | functional exercise capacity | 6MWD | 3 (ST) | mean, mean change, SD mean/group, P value | Yes |
| Cambach 1997 | functional and maximum exercise capacity | 6MWD, W‐max | 3 (ST); 6 (ST) | mean change, SD, N/group | Yes |
| Engstrom 1999 | functional exercise capacity | 6MWD | 12 (MT) | mean, SE, N/group/time point | Yes |
| Fernandez 2009 | functional exercise capacity | 6MWD, leg fatigue score | 12 (MT) | mean, SD, N/group/time point | Yes |
| Gottlieb 2011 | functional and maximum exercise capacity | 6MWD | 6 (ST); 12 (MT); 18 (LT) | mean, SD, N/group/time point | Yes |
| Güell 2000 | functional and maximum exercise capacity | 6MWD, W‐max | 3 (ST); 6 (ST); 9 (MT); 12 (MT); 18 (LT); 24 (LT) | mean, SE, group/time point | Yes |
| Güell 2006 | functional exercise capacity | 6MWD | 4 (ST) | mean, SD, N/group/time point | Yes |
| Jimenez‐Reguera 2020 | functional exercise capacity | 6MWD | 6 (ST); 12 (MT) | mean, SD, N/group/time point | Yes |
| Kalter‐Leibovici 2018 | functional exercise capacity | 6MWD | 12 (MT); 24 (LT) | mean change, SD, N/group | Yes |
| Kessler 2018 | functional exercise capacity | 6MWD | 12 (MT) | mean, SD, N/group (at 12 months) adjusted MD, 95% CI, N, P value | Yes |
| Khan 2019 | functional exercise capacity | 6MWD | 6 (ST) | mean change, SD, N/group, MD, 95% CI | Yes |
| Ko 2016 | functional exercise capacity | 6MWD | 12 (MT) | mean change, SD, N/group, P value | Yes |
| Littlejohns 1991 | functional exercise capacity | 6MWD | 12 (MT) | mean change, 95% CI, N/group | Yes |
| Lou 2015 | functional exercise capacity | 6MWD | 48 (LT) | mean change, SD, N/group adjusted median D, 95% CI, P value | Yes |
| Mendes 2010 | functional exercise capacity | 6MWD | 3 (ST) | mean, SD, N/group/time point ‐ box and whisker plots | Yes |
| Rea 2004 | functional and maximum exercise capacity | Shuttle walk test | 12 (MT) | mean, N/group/time point, P value difference | No |
| Strijbos 1996 | functional and maximum exercise capacity | W‐max, 4MWT, Borg scores during cycle test | 6 (ST); 12 (MT); 18 (LT) | mean, SD, N/group/time point | Yes |
| Tabak 2014 | functional exercise capacity | 6MWD | 1 (ST); 3 (MT) | mean, SD, N/group/time point | Yes |
| Theander 2009 | functional and maximum exercise capacity | 6MWD, grip strength | 3 (ST) | mean change, SD, N/group | Yes |
| van Wetering 2010 | functional and maximum exercise capacity | 6MWD, W‐max | 4 (ST); 12 (MT); 24 (LT) | mean change, SE, N/group | Yes |
| Vasilopoulou 2017 | functional and maximum exercise capacity | 6MWD, W‐max | 2 (ST); 14 (MT) | mean, SD, N/group/time point | Yes |
| Wakabayashi 2011 | functional exercise capacity | 6MWD | 6 (ST); 12 (MT) | mean change, SD, N/group/time point, P value | Yes |
| Wang 2017 | functional exercise capacity | 6MWD | 1 (ST); 3 (ST); 6 (ST); 12 (MT) | mean change, SD, N/group | Yes |
| Zhang 2020 | functional exercise capacity | 6MWD | 3 (ST); 6 (ST); 12 (MT); 24 (LT) | mean, SD, N/group/time point | Yes |
| Wijkstra 1994 | functional exercise capacity | 6MWD | 3 (ST); 6 (ST); 12 (MT); 18 (LT) | mean change, SD, N/group | Yes (3 months only) |
Abbreviations. 4MWT: 4‐minute walk test; 6MWD: 6‐minute walking distance; CI: confidence interval; LT: long‐term follow‐up; MD: mean difference; MT: medium‐term follow‐up; SD: standard deviation; SE: standard error; ST: short‐term follow‐up; W‐max: maximum exercise capacity (in watts).