Table 2 Cardiac hemodynamic response to the 6-minute walk test
From: Cardiac hemodynamic response to the 6-minute walk test in young adults and the elderly
Young | Elderly | P | |||
|---|---|---|---|---|---|
Time | Age | Time × age | |||
Stroke volume (ml) | |||||
Rest | 89.4 ± 22.1 | 68.9 ± 11.6 | <0.001 | 0.001 | 0.17 |
6 min | 111.3 ± 27.3 | 102.9 ± 15.2 | |||
Heart rate (beats/min) | |||||
Rest | 75.8 ± 12.0 | 77.3 ± 11.6 | <0.001 | 0.56 | 0.82 |
6 min | 117.4 ± 26.7 | 121.0 ± 21.8 | |||
Cardiac output (l/min) | |||||
Rest | 6.6 ± 1.3 | 5.3 ± 1.1 | <0.001 | 0.14 | 0.34 |
6 min | 12.7 ± 2.9 | 12.5 ± 2.9 | |||
Cardiac index (l/min/m2) | |||||
Rest | 4.0 ± 0.6 | 3.4 ± 0.6 | <0.001 | 0.65 | 0.12 |
6 min | 7.6 ± 1.4 | 7.9 ± 1.7 | |||