Table 3.
Relationship between the results of 4MGS, 5STS, 6MWT and other outcome parameters
| Variables | 4MGS | 5STS | 6MWT |
| r | r | r | |
| Age (yr) | -0,55** | 0,22 | -0,47** |
| Resting blood pressure diastolic (mmHg) | 0,30* | -0,08 | 0,26 |
| Resting blood pressure systolic (mmHg) | 0,23 | 0,05 | 0,16 |
| BMI (kg/m2) | -0.01 | 0,10 | 0,09 |
| Body fat percentage (% weight) | -0,36* | 0,31* | -0,42** |
| Fat free mass (kg) | 0,24 | 0,01 | 0,42** |
| FVC (L) | 0,10 | 0,02 | 0,38** |
| FEV1 (L) | 0,17 | -0,06 | 0,41** |
| Lung function: DLCOcSB (mmol/min/kPa) | 0,23 | -0,12 | 0,40** |
| PCS of SF-36 | 0,39** | -0,23 | 0,48** |
| MCS of SF-36 | -0,05 | -0,09 | -0,02 |
| MRC dyspnoe grade | -0,40** | 0,18 | -0,62** |
| HGS right hand highest value (kg) | 0,57** | -0,24 | 0,65** |
| Baseline heart rate (bpm) | 0,04 | 0,01 | -0,25 |
| Heart rate end (bpm) | 0,14 | 0,07 | 0,22 |
| Baseline SpO2 (%) | 0,17 | -0,11 | 0,34* |
| SpO2 end (%) | 0,08 | 0.00 | 0,10 |
| Baseline dyspnoe, Borg score | -0,33* | 0,14 | -0,43** |
| Dyspnoe end, Borg score | -0,32* | 0,23 | -0,09 |
| Baseline leg fatigue, Borg score | -0.19 | -0,02 | -0,18 |
| Leg fatigue end, Borg score | -0,32* | 0,18 | 0,14 |
r: Pearson’s and Spearman rank correlation coefficient
* 0,01<p<0,05
** p<0,01
Abbreviations: 4MGS=4 meter gait speed, 5STS=5 repetitions sit-to-stand, 6MWT=six minute walk test, yr=year, mmHg=millimeters of mercury, kg/m2=kilogram per square length in meters, %=percentage, kg=kilogram, BMI=Body Mass Index, kg/m2=kilogram per square length in meters, FVC=forced vital capacity, L=liter, FEV1=forced expiratory volume in 1 second, DLCOcSB=diffusion capacity to carbon monoxide corrected single breath, mmol/min/kPa=mmol CO per minute per kilopascal, PCS=physical component score, SF-36=short-form health survey 36 questions, MRC=Medical Research Council, bpm=beats per minute