Table 2 Blood pressure and VO response to upright bicycle exercise combined with (BFR) or without (CON) blood flow reduction. Data are means (±SD).
|
|
Exercise intensity (% VO2max) |
|
Rest |
20% |
40% |
60% |
| Mean arterial pressure (MAP, mmHg) |
| CON |
85 (10) |
86 (13) |
88 (9) |
92 (9) |
| BFR |
91 (10) |
96 (8) |
106 (11) |
118 (8) |
| Difference |
6 |
10 |
18 ** |
26 ** |
| Systolic arterial pressure (SAP, mmHg) |
| CON |
116 (11) |
124 (13) |
135 (13) |
147 (7) |
| BFR |
121 (9) |
142 (15) |
163 (17) |
189 (17) |
| Difference |
5 |
18 * |
28 ** |
42 ** |
| Diastolic arterial pressure (DAP, mmHg) |
| CON |
70 (10) |
67 (16) |
64 (13) |
64 (12) |
| BFR |
76 (11) |
73 (7) |
78 (11) |
83 (8) |
| Difference |
6 |
6 |
14 |
19 * |
| Rate-pressure product (HR * SAP) |
| CON |
7532 (1795) |
11154 (1531) |
15219 (2048) |
19767 (2491) |
| BFR |
9684 (2070) |
14755 (2551) |
22437 (5166) |
30510 (5297) |
| Difference |
2152 * |
3601 ** |
7218 ** |
10743 ** |
| Total systemic peripheral resistance (MAP / Q; mmHg.min.L-1) |
| CON |
19.7 (6.2) |
11.4 (2.8) |
8.3 (1.4) |
7.4 (1.4) |
| BFR |
23.1 (7.7) |
14.1 (3.0) |
10.6 (2.0) |
9.9 (1.9) |
| Difference |
3.4 |
2.7 |
2.3 ** |
2.5 ** |
| VO2 (ml.min-1) |
| CON |
217 (38) |
806 (173) |
1421 (197) |
2000 (281) |
| BFR |
260 (46) |
879 (213) |
1546 (224) |
2208 (299) |
| Difference |
43 |
73 |
125 |
208 |
| a-v O2 difference (VO2 / Q; ml.L-1) |
| CON |
- |
107 (26) |
136 (32) |
163 (40) |
| BFR |
- |
129 (40) |
155 (42) |
186 (46) |
| Difference |
- |
22 |
19 |
23 |
| Q (L) |
| CON |
- |
7.8 (1.6) |
10.8 (2.0) |
12.7 (2.4) |
| BFR |
- |
7.1 (1.3) |
10.4 (2.1) |
12.3 (2.4) |
| Difference |
- |
.7 |
.4 |
.4 |
a-v O difference, arterial-venous oxygen difference; VO, oxygen uptake; Q, cardiac output; HR, heart rate. Significant differences between BFR and CON:* p < 0.05,** p < 0.01.
