Table 1 Mean values for LBF, HR, MBP and LVC during IMC and muscle relaxation
Measurement parameters | Pre-exercise (basal) | 10-s isometric muscle contraction phase | 10-s muscle relaxation phase | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Target workload, %MVC (sub. nr.) | Target workload, %MVC (sub. nr.) | ||||||||||
10 % (n = 8) | 30 % (n = 8) | 50 % (n = 8) | 70 % (n = 7) | 90 % (n = 2) | 10 % (n = 8) | 30 % (n = 8) | 50 % (n = 8) | 70 % (n = 7) | 90 % (n = 2) | ||
Achieved %MVC (%) | – | 10.2 ± 0.1 | 29.8 ± 0.3 | 49.0 ± 0.4 | 69.9 ± 0.6 | 91.8 ± 3.8 | – | – | – | – | – |
CV for achieved %MVC (%) | – | 3.0 ± 0.8 | 2.0 ± 0.6 | 2.4 ± 0.7 | 2.1 ± 0.3 | 3.1 ± 0.4 | – | – | – | – | – |
LBF (L/min) | 0.46 ± 0.07 | 0.54 ± 0.06 | 0.61 ± 0.1 | 0.54 ± 0.1 | 0.64 ± 0.13 | 0.51 ± 0.22 | 0.85 ± 0.08 | 1.96 ± 0.19*,** | 2.54 ± 0.25*,** | 3.84 ± 0.57*,** | 5.04 ± 2.33 |
HR (beat/min) | 69.5 ± 3.7 | 70.7 ± 3.3 | 70.9 ± 2.8 | 73.2 ± 3.5 | 76.0 ± 3.5 | 75.7 ± 9.4 | 73.4 ± 3.4 | 80.0 ± 3.5*,** | 84.9 ± 4.1*,** | 89.0 ± 4.8*,** | 89.5 ± 7.9 |
MBP (mmHg) | 80.9 ± 3.2 | 81.2 ± 2.5 | 82.4 ± 2.9 | 80.0 ± 3.2 | 79.8 ± 2.4 | 77.2 ± 6.8 | 80.6 ± 2.9 | 81.5 ± 3.3 | 79.7 ± 3.2 | 79.3 ± 2.9 | 87.8 ± 7.4 |
LVC (mL/min/mmHg) | 5.7 ± 0.9 | 6.7 ± 0.8 | 7.5 ± 1.3 | 6.9 ± 1.3 | 7.8 ± 1.4 | 6.5 ± 2.3 | 10.7 ± 1.1 | 24.0 ± 2.1*,** | 32.0 ± 3.1*,** | 47.8 ± 5.9*,** | 55.5 ± 22.0 |