Table 2. Cardiorespiratory responses to submaximal cycle ergometry before (pre-test) and
after (re-test) 3 weeks of intake of L-arginine-L-aspartate or placebo. Data represent means (ąSD).

 

 

PLACEBO (n=8)

L-ARGININE-L-ASPARTATE (n=8)

 

 

Rest

50 watts

100 watts

150 watts

Rest

50 watts

100 watts

150 watts

Heart Rate
(bpm)

Pre-Test
Re-Test

80 (12)
82 (18)

100 (9)
104 (9)

117 (10)
121 (10)

134 (10)
138 (10)

77 (13)
80 (15)

99 (8)
94 (6) *

114 (8)
111 (8) *

134 (8)
129 (7) **

Systolic
BP (mm Hg)

Pre-Test
Re-Test

128.8 (22.1)
118.6 (13.6)

142.4 (16.5)
131.3 (14.5)

151.8 (17.8)
147.4 (20.7)

170.4 (20.2)
165.1 (14.4)

133.8 (16.2)
122.4 (12.8)

154.0 (13.9)
139.0 (14.4)

161.6 (20.5)
148.6 (17.8)

178.9 (22.5)
173.5 (17.2)

Diastolic
BP (mm Hg)

Pre-Test
Re-Test

76.0 (8.6)
 76.1 (12.7)

70.0 (11.9)
68.4 (14.1)

69.4 (14.2)
69.4 (13.2)

70.3 (9.4)
66.7 (12.6)

77.4 (18.2)
76.3 (10.1)

72.3 (18.9)
71.3 (9.0)

70.5 (13.2)
70.4 (12.3)

70.0 (16.4)
71.6 (9.0)

RPP

Pre-Test
Re-Test

10344 (2578)
 9869 (2725)

14123 (1689)
13720 (2122)

17701 (2610)
17696 (2315)

22848 (2973)
22719 (2313)

10285 (1950)
 9740 (1667)

15163 (1401)
13057 (1556)

18350 (2626)
16426 (2315)

23908 (3646)
22533 (2847)

VE (l·min-1)

Pre-Test
Re-Test

15.5 (4.6)
14.6 (4.3)

27.7 (5.5)
28.4 (4.3)

38.5 (4.2)
39.6 (4.5)

53.2 (6.4)
54.9 (5.5)

14.9 (3.2)
15.6 (2.2)

31.7 (4.8)
28.5 (3.6)

39.4 (3.9)
37.6 (3.1) *

53.3 (5.2)
50.7 (4.5) *

VO2 (l·min-1)

Pre-Test
Re-Test

.410 (.072)
.375 (.090)

1.082 (.118)
1.065 (.131)

1.577 (.127)
1.551 (.123)

2.105 (.188)
2.089 (.149)

.429 (.094)
.418 (.067)

1.183 (.191)
1.100 (.136)

1.651 (.105)
1.551 (.116)

2.214 (.160)
2.071 (.139)

VCO2 (l·min-1)

Pre-Test
Re-Test

.380 (.090)
.347 (.086)

.952 (.134)
.955 (.159)

1.459 (.104)
1.482 (.134)

2.105 (.161)
2.163 (.143)

.397 (.102)
.382 (.052)

1.087 (.153)
.926 (.097) *

1.508 (.111)
1.403 (.132)

2.199 (.140)
2.032 (.134)**

VE / VO2

Pre-Test
Re-Test

37.2 (5.8)
38.9 (4.5)

25.6 (3.5)

26.7 (2.3)

24.5 (2.5)
25.7 (3.5)

25.3 (2.5)
26.4 (3.5)

35.2 (6.2)
38.7 (11.3)

27.1 (4.2)
26.3 (4.7)

24.0 (3.2)
24.4 (2.8)

24.2 (2.6)
24.6 (3.3)

VE / VCO2

Pre-Test
Re-Test

40.5 (4.6)
42.0 (4.0)

29.1 (3.5)
29.9 (2.4)

26.4 (2.6)
26.8 (2.3)

25.3 (2.0)
25.4 (2.1)

38.2 (6.1)
41.4 (7.3)

29.3 (3.6)
31.1 (5.2)

26.3 (3.6)
27.0 (3.0)

24.3 (2.5)
25.1 (3.1)

RER

Pre-Test
Re-Test

.92 (.10)
.93 (.11)

.88 (.04)
.89 (.04)

.93 (.04)
.96 (.06)

1.00 (.05)
1.04 (.07)

.92 (.10)
.93 (.16)

.92 (.07)
.85 (.08)

.91 (.05)
.90 (.05)

.99 (.04)
.98 (.05) *
* p < 0.05; ** p < 0.01 for changes between groups. Abbreviations: BP = Blood pressure, VE = Minute ventilation, RPP = Rate pressure product, RER = Respiratory exchange ratio.