The Growth of Perceived Exertion During a Prolonged Bicycle Ergometer Test at a Constant Work Load

1986 ◽  
pp. 47-55 ◽  
Author(s):  
Gunnar Borg ◽  
Sven-Erik Johansson
Keyword(s):  
Perceived Exertion ◽  
Work Load ◽  
Bicycle Ergometer ◽  
Ergometer Test ◽  
Bicycle Ergometer Test

Use of respiratory quotients in assessment of aerobic work capacity

1962 ◽  
Vol 17 (1) ◽  
pp. 47-50 ◽  
Author(s):  
B. Issekutz ◽  
N. C. Birkhead ◽  
K. Rodahl
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Uptake ◽  
Work Load ◽  
Work Capacity ◽  
Bicycle Ergometer ◽  
Carbon Dioxide Output ◽  
Ergometer Test ◽  
Aerobic Work Capacity ◽  
Bicycle Ergometer Test ◽  
Better Than

Oxygen uptake and carbon dioxide output were measured in 32 untrained subjects during exercise on the bicycle ergometer. It was shown that the work respiratory quotient (RQ) under standardized conditions can be used as a measure of physical fitness. ΔRQ (work RQ minus 0.75) increases logarithmically with the work load and maximal O2 uptake is reached at a ΔRQ value of 0.40. This observation offered the possibility of predicting the maximal O2 uptake of a person, based on the measurement of RQ during a single bicycle ergometer test at a submaximal load. For each work RQ between 0.95 and 1.15 a factor was presented, together with the aid of a simple equation, which gave a good approximation (generally better than ±10%) of the maximal O2 uptake.

The Effects of Gender and Experience on Perceived Exertion

1988 ◽  
Vol 10 (1) ◽  
pp. 22-31 ◽  
Author(s):  
Mark D. Winborn ◽  
Andrew W. Meyers ◽  
Carol Mulling
Keyword(s):  
Gender Differences ◽  
Heart Rate ◽  
Oxygen Uptake ◽  
Perceived Exertion ◽  
Bicycle Ergometer ◽  
Maximum Oxygen Uptake ◽  
Athletic Teams ◽  
Ergometer Test ◽  
Bicycle Ergometer Test

This study investigated the influence of gender and athletic experience on individuals' ratings of their perceived exertion (RPE). Twelve males with high athletic experience, 12 with low athletic experience, 12 females with high athletic experience, and 12 with low athletic experience were recruited from university classes and athletic teams. An estimate of each individual's maximum oxygen uptake (est VO2max) was obtained from a submaximal bicycle ergometer test. Subjects were then presented with ergometer workloads at 30, 50, and 70% of their estimated VO2max. Heart rate readings and RPEs were obtained during each workload presentation. Low athletic experience females were the least accurate in their RPEs, followed by low athletic experience males. High athletic experience males were the most accurate in their RPEs, followed by high athletic experience females. Results indicated that differences in RPE accuracy scores may be influenced by gender but that exposure to athletic experiences appears to override any potential gender differences.

Exercise- and cold-induced changes in plasma beta-endorphin and beta-lipotropin in men and women

1987 ◽  
Vol 62 (2) ◽  
pp. 622-627 ◽  
Author(s):  
M. Viswanathan ◽  
J. P. Van Dijk ◽  
T. E. Graham ◽  
A. Bonen ◽  
J. C. George
Keyword(s):  
Exercise Bout ◽  
Bicycle Ergometer ◽  
Relative Increase ◽  
Thermoregulatory Response ◽  
O2 Uptake ◽  
Beta Endorphin ◽  
Exposure Levels ◽  
Induced Changes ◽  
Ergometer Test ◽  
Bicycle Ergometer Test

The plasma beta-endorphin (beta-EP) and beta-lipotropin (beta-LPH) response of men, eumenorrheic women, and amenorrheic women (n = 6) to 1 h of rest or to a bicycle ergometer test [20 min at 30% maximum O2 uptake (VO2max), 20 min at 60% VO2max, and at 90% VO2max to exhaustion] was studied in both normal (22 degrees C) and cold (5 degrees C) environments. beta-EP and beta-LPH was measured by radioimmunoassay in venous samples collected every 20 min during rest or after each exercise bout. Exhaustive exercise at ambient temperature (Ta) 22 degrees C induced significant increases in plasma beta-EP and beta-LPH in all subjects as did work at 60% VO2max in amenorrheic and eumenorrheic women. During work at Ta 5 degrees C, the relative increase in beta-EP and beta-LPH was suppressed in eumenorrheic women and completely prevented in amenorrheic women. Although significant lowering of beta-EP and beta-LPH was observed in men and eumenorrheic women during rest at 5 degrees C, amenorrheic women maintained precold exposure levels. These findings suggest that plasma beta-EP and beta-LPH may reflect a thermoregulatory response to heat load. There appears to be a sexual dimorphism in exercise- and cold-induced release of beta-EP and beta-LPH and amenorrhea may be accompanied by alterations in these responses.

Training-induced changes in hormonal and metabolic responses to submaximal exercise

1979 ◽  
Vol 46 (4) ◽  
pp. 766-771 ◽  
Author(s):  
W. W. Winder ◽  
R. C. Hickson ◽  
J. M. Hagberg ◽  
A. A. Ehsani ◽  
J. A. McLane
Keyword(s):  
Oxygen Consumption ◽  
Healthy Subjects ◽  
Maximal Oxygen Consumption ◽  
Bicycle Ergometer ◽  
Submaximal Exercise ◽  
Metabolic Responses ◽  
Plasma Glucagon ◽  
Induced Changes ◽  
Ergometer Test ◽  
Bicycle Ergometer Test

Plasma glucagon and catecholamines increase during prolonged submaximal exercise, but the magnitude of the increase is less in endurance-trained individuals than in untrained subjects. We have studied the rapidity at which this adaptation occurs. Six initially untrained healthy subjects exercised vigorously (on bicycle ergometers and by running) 30–50 min/day, 6 days/wk, for 9 wk. Prior to the beginning of training and at 3-wk intervals thereafter, participants were subjected to 90-min bicycle ergometer test work loads that elicited 58 +/- 2% of the subjects' initial maximal oxygen consumption. The major proportion of the training-induced decrement in plasma glucagon and catecholamine responses to exercise was seen after 3 wk of training. We conclude that the hormonal component of the training adaptation occurs very early in the course of a vigorous endurance training program.

SOSTOYaNIE KARDIORESPIRATORNOY SISTEMY U BOL'NYKh S IV STEPEN'Yu GRUDNOGO SKOLIOZA DO I POSLE OPERATIVNOGO LEChENIYa

2003 ◽  
Vol 10 (1) ◽  
pp. 21-23 ◽  
Author(s):  
A G Avtandilov ◽  
S T Vetrile ◽  
D I Nemanova ◽  
A A Kuleshov
Keyword(s):  
Bicycle Ergometer ◽  
External Respiration ◽  
Cardiorespiratory System ◽  
Right Ventricular Wall ◽  
The Right ◽  
Ergometer Test ◽  
Lower Size ◽  
Respiration Function ◽  
Bicycle Ergometer Test ◽  
Better Than

Cardiorespiratory system was examined in 33 patients with thoracic scoliosis of degree IV (15 - nonsurgical, 18 - surgical treatment). Eighteen surgically treatment patients were operated using Cotrel-Dubousset instrumentation and were examined within 1-3 years after surgery. Examination included evaluation of external respiration function, echocardiography (ECG), bicycle ergometer test (BEMT). It was shown that postsurgically the function of external respiration was better than in nonsurgically treated patients. ECG showed reliably lower size and thickness of the right ventricular wall as well as considerably lower level of pulmonary hypertension. Tolerance to physical load at BEMT, level of working capacity and the term of restoration was reliably better in surgically treated patients.

REAL-TIME EVALUATION OF ANAEROBIC THRESHOLD WITH RMS-EMG OF WORKING AND NONWORKING MUSCLES DURING INCREMENTAL BICYCLE ERGOMETER TEST

1992 ◽  
Vol 17 (4) ◽  
pp. 259-271 ◽  
Author(s):  
Olavi Airaksinen ◽  
Arto Remes ◽  
Pertti J. Kolari ◽  
Teuvo Sihvonen ◽  
Osmo Hānninen ◽  
...  
Keyword(s):  
Real Time ◽  
Anaerobic Threshold ◽  
Bicycle Ergometer ◽  
Ergometer Test ◽  
Time Evaluation ◽  
Bicycle Ergometer Test
Sign in / Sign up

Export Citation Format

Share Document