Table 2.
Systemic and cerebral hemodynamics and cognitive scores under resting conditions pre- and postinterventions by groups
SAT |
AET |
P Value (ANOVA) |
|||||
---|---|---|---|---|---|---|---|
Pre | Post | Pre | Post | Time | Group | Time×Group | |
Body mass, kg | 79.6 (15.0) | 77.0 (17.8) | 75.3 (15.5) | 74.2 (16.1) | 0.111 | 0.496 | 0.520 |
BMI, kg/m2 | 27.3 (4.0) | 26.4 (4.4) | 27.0 (4.8) | 26.5 (4.7) | 0.089 | 0.934 | 0.599 |
V̇o2peak, | |||||||
mL/min | 2.08 (0.60) | 1.99 (0.61)* | 1.71 (0.63) | 1.88 (0.61)* | 0.187 | 0.246 | <0.001 |
mL·kg−1·min−1 | 25.8 (4.6) | 25.2 (4.8) | 23.0 (6.2) | 25.7 (6.5)* | 0.024 | 0.536 | <0.001 |
Heart rate, beats/min | 66.1 (10.3) | 62.5 (10.2)* | 62.2 (9.5) | 57.3 (6.6)* | <0.001 | 0.121 | 0.550 |
Systolic BP, mmHg | 121.5 (12.1) | 122.3 (11.4) | 119.1 (5.8) | 120.8 (9.3) | 0.124 | 0.539 | 0.592 |
Diastolic BP, mmHg | 73.9 (7.4) | 74.6 (5.8) | 74.9 (5.7) | 75.2 (9.5) | 0.549 | 0.734 | 0.786 |
MAP, mmHg | 96.4 (12.0) | 94.3 (12.1) | 93.7 (8.5) | 95.2 (11.3) | 0.869 | 0.771 | 0.306 |
EtCO2, mmHg | 37.1 (3.0) | 36.5 (3.2) | 36.8 (3.5) | 36.2 (2.8) | 0.139 | 0.745 | 0.935 |
, % | 98.1 (1.4) | 98.3 (1.0) | 98.3 (1.2) | 98.3 (0.9) | 0.724 | 0.612 | 0.724 |
Cerebral hemodynamics | |||||||
Mean CBFV, cm/s | 49.0 (9.4) | 46.9 (8.3) | 48.3 (10.2) | 49.2 (10.0) | 0.581 | 0.780 | 0.225 |
CVCi, cm/s·mmHg | 0.52 (0.12) | 0.50 (0.09) | 0.52 (0.10) | 0.52 (0.12) | 0.822 | 0.719 | 0.638 |
CVRi, mmHg·cm−1·s−1 | 2.04 (0.48) | 2.07 (0.44) | 2.01 (0.44) | 2.02 (0.50) | 0.818 | 0.777 | 0.884 |
Neurocognitive measures | |||||||
CVLT-II total | 45.1 (12.1) | 45.2 (8.7) | 45.2 (9.3) | 48.5 (11.1) | 0.307 | 0.581 | 0.339 |
CVLT-II long delayed free recall | 8.4 (1.9) | 10.2 (2.0) | 9.4 (1.9) | 10.2 (3.9) | 0.005 | 0.516 | 0.229 |
D-KEFS trail making test | 10.7 (3.9) | 12.5 (1.8) | 11.5 (2.3) | 12.2 (1.7) | 0.004 | 0.787 | 0.196 |
D-KEFS color-word inhibition | 10.7 (3.2) | 11.7 (2.4) | 11.3 (1.9) | 12.0 (1.9) | 0.004 | 0.588 | 0.658 |
D-KEFS letter fluency | 11.1 (3.1) | 10.9 (3.3) | 9.7 (3.6) | 10.8 (3.8) | 0.240 | 0.495 | 0.116 |
D-KEFS category fluency | 10.9 (3.7) | 11.4 (3.9) | 10.4 (3.2) | 12.5 (3.5) | 0.008 | 0.829 | 0.073 |
Data are presented as means ± SD. Total of 37 subjects (19 in SAT and 18 in AET). Two-way repeated ANOVA was performed to test the main effects of time and group as well as the interaction effect of time-by-group. *P < 0.05 compared with pre. Bold values represent P < 0.05.
AET, aerobic exercise training; ANOVA, analysis of variance; BMI, body mass index; BP, blood pressure; CBFV, cerebral blood flow velocity; CVCi, cerebrovascular conductance index; CVLT-II, California verbal learning test-second edition; CVRi, cerebrovascular resistance index; D-KEFS, D-KEFS, Delis-Kaplan executive function system (higher scores indicate better cognitive function); EtCO2, end-tidal CO2; MAP, mean arterial pressure; , arterial blood oxygen saturation; SAT, stretching-and-toning; V̇o2peak, peak oxygen uptake.