Recovery of pulmonary diffusing capacity after maximal exercise
|
 |
|
Post a Comment
|
|
|
|
|
CONTRIBUTORS:
|
|
|
JOURNAL:
|
|
|
YEAR:
|
1992
|
|
PUB TYPE:
|
Journal Article
|
|
SUBJECT(S):
|
PULMONARY-DIFFUSING-CAPACITY; CARDIAC-OUTPUT; ADAPTATION; ROWING-ERGOMETRY; ARM-ERGOMETRY; TREADMILL; RUNNING; AEROBIC-CAPACITY; BLOOD-VOLUME; ECHOCARDIOGRAPHY
|
|
DISCIPLINE:
|
No discipline assigned
|
|
HTTP:
|
|
|
LANGUAGE:
|
English
|
|
PUB ID:
|
103-366-340
(Last edited on
2002/02/27 18:45:01 US/Mountain)
|
|
SPONSOR(S):
|
|
|
ABSTRACT:
Pulmonary diffusing capacity (DlCO), together with spirometric variables, arterial oxygen tension (paO2) and cardiac output were determined before and at intervals after maximal arm cranking, treadmill running and ergometer rowing. Independent of the type of exercise, DlCO increased immediately post-exercise from a median 13.6 (range 7.3-16.3) to 15.1 (9.3-19.6) mmol min-1 kPa-1 (P is less than 0.01). However, it decreased to 11.6 (6.9-15.5) mmol min-1 KPa-1 (P is less than 0.01) after 24 h with cardiac output and paO2 at resting values, and DlCO normalized after 20 h. Thoracic electrical impedance at 2.5 and 100 kHz increased slightly post-exercise, indicating a decrease in thoracic fluid balance, and there were no echocardiographic signs of left ventircular failure at the time of the decrease in DlCO. Also, acitve muscle (limb) circumference and volume, and an increase in haematocrit from 43.8 (38.0-47.0) to 47.1 (42.7-49.8) (P is less than 0.01), had normalized at the time of the decrease in DlCO. Vital capacity, forced vital capacity, forced expiratory volume in 1 s, peak and peak mid-expiratory flows did not change. However, total lung capacity increased from 6.8 (5.0-7.6) to 7.0 (5.1-7.8) litres (P is less than 0.05) immediately after exercise and remained elevated at 6.9 (5.1-8.7) litres when a decrease in DlCO was noted. The results demonstrate that independent of the type of maximal exercise, and aprpoximate 15 percent reduction in DlCO takes place 2-3 h post-exercise, which normalizes during the following day of recovery.
|
|
|
|
STATISTICS
|
|
Click on # to view
|
|
Citations
|
|
0
|
|
References
|
|
0
|
|
Comments
|
|
0
|
|
Quality
|
|
0/0.00
|
|
Interest
|
|
0/0.00
|
|
View(er)s
|
|
1/325
|
|
|
|
|
|
|
| Prev |
Next |
|