|
Table 2. Hemodynamic
responses and echocardiographic measurements at rest and at loads of
333 gr·kg-1 and no weights. Data are means (±SD). |
| VARIABLES |
REST
|
333 gr·kg-1
|
NO WEIGHTS
|
|
HR (beats·min-1)
|
85.4 (9.1)
|
133.2 (7.1) ‡
|
121.4 (5.6) ‡
|
|
SV (ml)
|
54.2 (6.7)
|
53.3 (5.8)
|
56.1 (5.0)
|
|
Q (l·min-1)
|
4.6 (.4)
|
7.1 (1.1) ‡
|
6.8 (1.2) ‡
|
|
EDV (ml)
|
85.6 (4.4)
|
93.1 (3.2) ‡
|
95.4 (6.0) ‡
|
|
ESV
(ml)
|
31.4 (3.2)
|
39.8 (3.2) ‡
|
39.3 (2.8) ‡
|
|
EF
(%)
|
63.3 (5.0)
|
57.3 (5.1) ‡
|
58.8 (5.2) ‡
|
|
P/V (ratio)
|
3.3 (.6)
|
3.7 (.8)
|
3.3 (.7)
|
|
SBP (mmHg)
|
102.1 (7.0)
|
147.7 (7.0) ‡
|
129.8 (7.1) *‡
|
|
DBP (mmHg)
|
66.4 (6.0)
|
69.3 (3.1)
|
66.4 (3.7)
|
|
MABP
(mmHg)
|
78.3 (4.0)
|
95.4 (4.3) ‡
|
87.5 (3.8) *‡
|
|
TPR (dynes·s-1·cm-5)
|
1362 (102)
|
1075 (99) ‡
|
1030 (76) ‡
|
|
VO2(ml·kg-1·min-1)
|
3.1 (.6)
|
13.6 (1.3)‡
|
10.5 (1.1) *‡
|
|
VO2(% of VO2max)
|
.07 (.01)
|
31.4 (5.7) ‡
|
24.2 (4.7) *‡
|
|
Abbreviations:
HR = Heart Rate, SV= Stroke Volume, Q = Cardiac output, EDV = End Diastolic
Volume, ESV = End Systolic Volume, EF = Ejection Fraction, P/V = SBP/ESV,
SBP = Systolic Blood Pressure, DBP = Diastolic Blood Pressure, MABP
= Mean Arterial Blood Pressure, TPR = Total Peripheral Resistance, VO2
= Oxygen uptake.
* denotes p < 0.05 between work-loads. ‡ denotes p < 0.05 compared with rest. |