The Effects of Heart Rate, Oxygen Uptake, and Blood Lactic Acid Concentration According to Sauna Recovery after Moderate Submaximal Exercise

2002 ◽  
Vol 18 ◽  
pp. 1347-1356
Author(s):  
Hyung Kook Lee
Keyword(s):  
Heart Rate ◽  
Lactic Acid ◽  
Oxygen Uptake ◽  
Acid Concentration ◽  
Submaximal Exercise ◽  
Lactic Acid Concentration

Lack of heart rate variation between morning and afternoon exercise testing in coronary artery disease patients

1993 ◽  
Vol 74 (3) ◽  
pp. 1012-1015 ◽  
Author(s):  
J. D. Marriott ◽  
L. H. Hartley ◽  
J. Sherwood
Keyword(s):  
Blood Pressure ◽  
Coronary Artery Disease ◽  
Heart Rate ◽  
Lactic Acid ◽  
Oxygen Uptake ◽  
Blood Plasma ◽  
Early Morning ◽  
Lactic Acid Concentration ◽  
Late Afternoon ◽  
Artery Disease

The purpose of this study was to investigate cardiovascular [heart rate (HR), blood pressures, rate-pressure product (RPP)], physiological (oxygen uptake), and metabolic (blood plasma lactic acid concentration) responses during symptom-limited graded exercise testing (SL-GXT) during early morning and late afternoon hours in an unmedicated, regularly exercising, coronary artery disease population. Subjects, males ages 41–71 yr (n = 11), underwent SL-GXT via cycle ergometry at 8:30 A.M. and 4:30 P.M. HR, systolic blood pressure, diastolic blood pressure, and RPP were evaluated at rest and at submaximal and peak work. Oxygen uptake and rate of perceived exertion were also determined at submaximal and peak power output, with blood plasma lactic acid concentration measured at peak work. Data, analyzed by the paired t test, failed to demonstrate any significant variation in HR, systolic blood pressure, diastolic blood pressure, RPP, or blood plasma lactic acid responses during exercise at the two points used. Oxygen uptake did not significantly change at any submaximal intensity. Thus SL-GXT results obtained at early morning (8:30 A.M.) and late afternoon (4:30 P.M.) are a reproducible, reliable means of prescribing exercise HR and work intensities.

The Effect of Step Tempo Type on Heart Rate and Blood Lactic Acid Concentration during Forest Slope Trekking

2021 ◽  
Vol 19 (3) ◽  
pp. 385-393
Author(s):  
Jo-Eun Kim ◽  
◽  
Ki-hong Kim ◽  
Jun-Won Min ◽  
Jeong-Bin Yu ◽  
...  
Keyword(s):  
Heart Rate ◽  
Lactic Acid ◽  
Acid Concentration ◽  
Lactic Acid Concentration

Heart rate and blood lactic acid concentration during experimental diving of water snakes

1962 ◽  
Vol 202 (6) ◽  
pp. 1163-1165 ◽  
Author(s):  
H. V. Murdaugh ◽  
Joseph E. Jackson
Keyword(s):  
Heart Rate ◽  
Lactic Acid ◽  
Acid Concentration ◽  
Lactic Acid Concentration ◽  
Water Snake ◽  
Water Snakes ◽  
Constrictor Response

Bradycardia in response to submersion occurs in Natrix sipedon and Natrix cyclopion. Atropine will prevent this diving bradycardia. Blood lactic acid concentration does not increase during submersion, indicating the presence of an arterial constrictor response in these species of water snake. The diving phenomenon of the water snake appears similar to the diving phenomenon of the seal in that both diving bradycardia and arterial constrictor response occur.

Post-Mortem Diagnosis of Hypoxia by Means of Brain Lactic Acid Concentration

1958 ◽  
Vol 192 (3) ◽  
pp. 577-580 ◽  
Author(s):  
Donald D. Van Fossan ◽  
Robert T. Clark
Keyword(s):  
Lactic Acid ◽  
Acid Concentration ◽  
Oxygen Deficiency ◽  
Postmortem Brain ◽  
Post Mortem ◽  
Lactic Acid Concentration ◽  
Altitude Exposure ◽  
Post Mortem Brain ◽  
Exposure Levels ◽  
The Brain

Simulated altitude exposure elevates the postmortem brain lactic acid concentration up to 98 mg/100 gm above controls depending on species used, duration, and intensity of exposure. The sharp difference in post-mortem brain lactic acid concentration between altitude exposed animals and controls remains demonstrable for the longest postmortem intervals studied (20 hr. in the dog, 30 hr. in the rabbit, and 6 hr. in the rat). Upon recovery from altitude exposure the brain lactic acid and/or precursors return toward pre-exposure levels in accordance with first order reaction kinetics during the first few minutes. The velocity constant is .32 and the half-life is 2.2 minutes. Elevated post-mortem brain lactic acid concentration is a constant finding in animals which were hypoxic at the time of death and appears to be a suitable criterion for establishing ante-mortem altitude exposure or other physiologically similar oxygen deficiency situations.

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