Estimation Development and Validity for Maximal Oxygen Consumption based on Submaximal Exercise Responses and Body Index Variables for Adult Women

2014 ◽  
Vol 16 (3) ◽  
pp. 39-48
Author(s):  
Jeon, Yoo-Joung ◽  
Jae Hyeng Im ◽  
ByungKun Lee
Keyword(s):  
Oxygen Consumption ◽  
Maximal Oxygen Consumption ◽  
Submaximal Exercise ◽  
Adult Women ◽  
Body Index

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.

scholarly journals The effects of a pilates-aerobic program on maximum exercise capacity of adult women

2017 ◽  
Vol 23 (3) ◽  
pp. 246-249 ◽  
Author(s):  
Milena Mikalački ◽  
Nebojša Čokorilo ◽  
Pedro Jesús Ruiz-Montero
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Physical Exercise ◽  
Training Program ◽  
Maximal Oxygen Consumption ◽  
Adult Women ◽  
Maximum Heart Rate ◽  
Maximum Exercise ◽  
Maximal Speed ◽  
Physiologic Parameters

ABSTRACT Introduction: Physical exercise such as the Pilates method offers clinical benefits on the aging process. Likewise, physiologic parameters may be improved through aerobic exercise. Methods: In order to compare the differences of a Pilates-Aerobic intervention program on physiologic parameters such as the maximum heart rate (HRmax), relative maximal oxygen consumption (relative VO2max) and absolute (absolute VOmax), maximum heart rate during maximal oxygen consumption (VO2max-HRmax), maximum minute volume (VE) and forced vital capacity (FVC), a total of 64 adult women (active group = 48.1 ± 6.7 years; control group = 47.2 ± 7.4 years) participated in the study. The physiological parameters, the maximal speed and total duration of test were measured by maximum exercise capacity testing through Bruce protocol. The HRmax was calculated by a cardio-ergometric software. Pulmonary function tests, maximal speed and total time during the physical test were performed in a treadmill (Medisoft, model 870c). Likewise, the spirometry analyzed the impact on oxygen uptake parameters, including FVC and VE. Results: The VO2max (relative and absolute), VE (all, P<0.001), VO2max-HRmax (P<0.05) and maximal speed of treadmill test (P<0.001) showed significant difference in the active group after a physical exercise interventional program. Conclusion: The present study indicates that the Pilates exercises through a continuous training program might significantly improve the cardiovascular system. Hence, mixing strength and aerobic exercises into a training program is considered the optimal mechanism for healthy aging.

Hemodynamic, Hematological, and Hormonal Responses to Submaximal Exercise in Normobaric Hypoxia in Pubescent Girls

2016 ◽  
Vol 28 (3) ◽  
pp. 417-422 ◽  
Author(s):  
Hun-young Park ◽  
Sang-seok Nam ◽  
Hirofumi Tanaka ◽  
Dong-jun Lee
Keyword(s):  
Oxygen Consumption ◽  
Cell Count ◽  
Sea Level ◽  
Killer Cell ◽  
Maximal Oxygen Consumption ◽  
Cycle Ergometer ◽  
Submaximal Exercise ◽  
Normobaric Hypoxia ◽  
Hypoxic Environment ◽  
Ergometer Exercise

Purpose:The aim of this study was to investigate hemodynamic, hematological, and immunological responses to prolonged submaximal cycle ergometer exercise at a simulated altitude of 3000 m in pubescent girls.Methods:Ten girls, 12.8 ± 1.0 years old, exercised on a cycle ergometer for 60 min at a work rate corresponding to 50% maximal oxygen consumption measured at sea level, under two environmental conditions; sea level (normoxia) and a simulated 3000 m altitude (normobaric hypoxia).Results:There were no significant differences in tidal volume, ventilation, oxygen consumption, cardiac output, stroke volume, and heart rate between the two exercise conditions. However, reticulocyte, adrenocorticotropic hormone, and cortisol concentrations increased significantly from pre- to postexercise in the hypoxic environment. Leukocyte and T-cell count increased and B-cell count decreased after exercise under both conditions. There were no significant changes in natural killer cell count.Conclusion:Our simulated hypoxic environment provided a mild environmental stressor that did not impose a heavy burden on the cardiovascular, hematological, or immunological functions during submaximal exercise in pubescent girls.

scholarly journals Oral versus Nasal Breathing during Moderate to High Intensity Submaximal Aerobic Exercise

2017 ◽  
Vol 5 (1) ◽  
pp. 8 ◽  
Author(s):  
Chase O. LaComb ◽  
Richard D. Tandy ◽  
Szu Ping Lee ◽  
John C. Young ◽  
James W. Navalta
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Consumption ◽  
Aerobic Exercise ◽  
Repeated Measures ◽  
Pulmonary Ventilation ◽  
Maximal Oxygen Consumption ◽  
Submaximal Exercise ◽  
Nasal Breathing ◽  
Oral Breathing ◽  
Submaximal Aerobic Exercise

Introduction: When comparing oral breathing versus nasal breathing, a greater volume of air can be transported through the oral passageway but nasal breathing may also have benefits at submaximal exercise intensities. Purpose: The purpose of this study was to determine breathing efficiency during increasing levels of submaximal aerobic exercise. Methods: Nineteen individuals (males N=9, females N=10) completed a test for maximal oxygen consumption (VO2max) and on separate days 4-min treadmill runs at increasing submaximal intensities (50%, 65%, and 80% of VO2max) under conditions of oral breathing or nasal breathing. Respiratory (respiration rate [RR], pulmonary ventilation [VE]), metabolic (oxygen consumption [VO2], carbon dioxide production [VCO2]) and efficiency measures (ventilatory equivalents for oxygen [Veq×O2-1] and carbon dioxide [Veq×CO2-1] were obtained. Data were analyzed utilizing a 2 (sex) x 2 (condition) x3 (intensity) repeated measures ANOVA with significance accepted at p≤0.05. Results: Significant interactions existed between breathing mode and intensity such that oral breathing resulted in greater RR, VE, VO2, and VCO2 at all three submaximal intensities (p<.05).  Veq×O2-1 and Veq×CO2-1 presented findings that nasal breathing was more efficient than oral breathing during the 65% and 80% VO2max intensities (p<0.05). Conclusion: Based on this analysis, oral breathing provides greater respiratory and metabolic volumes during moderate and moderate-to-high submaximal exercise intensities, but may not translate to greater respiratory efficiency. However when all variables are considered together, it is likely that oral breathing represents the more efficient mode, particularly at higher exercise intensities.

β-Adrenergic receptor number in human lymphocytes is inversely correlated with aerobic capacity

1998 ◽  
Vol 274 (6) ◽  
pp. E1106-E1112 ◽  
Author(s):  
Nobuharu Fujii ◽  
Sachiko Homma ◽  
Fumio Yamazaki ◽  
Ryoko Sone ◽  
Takeshi Shibata ◽  
...  
Keyword(s):  
Oxygen Consumption ◽  
Aerobic Capacity ◽  
Adrenergic Receptor ◽  
Ventilatory Threshold ◽  
Human Lymphocytes ◽  
Mrna Level ◽  
Maximal Oxygen Consumption ◽  
Subsequent Degradation ◽  
Intracellular Compartments ◽  
Model Cell

In the present study, the relationships between β-adrenergic receptor (β-AR) expression and aerobic capacity evaluated by maximal oxygen consumption ([Formula: see text]) and oxygen consumption level at ventilatory threshold (V˙o 2@VT) were investigated. Seventeen physically untrained and 25 trained men participated in the study. After supine resting, the peripheral blood was sampled for preparation of lymphocytes, the model cell used to analyze the β-AR state. The total number of β-AR in lymphocytes (β-ARtotal) was inversely correlated with theV˙o 2 max( r = −0.368; P < 0.05) and theV˙o 2@VT ( r = −0.359; P < 0.05). Similar relationships were also observed between the number of β-AR in cell surface and both V˙o 2 max( r = −0.491; P < 0.05) andV˙o 2@VT ( r = −0.498; P < 0.05). However, no correlation was obtained between the number of β-AR in intracellular compartments and eitherV˙o 2 max orV˙o 2@VT. The β2-AR mRNA level quantified by the use of competitive reverse transcription-polymerase chain reaction was inversely correlated withV˙o 2@VT ( r = −0.567; P < 0.05) and positively correlated with β-ARtotal( r = 0.521; P < 0.05). These findings suggest that the β-AR number in lymphocytes is inversely correlated with aerobic capacity. This relationship may be explained by downregulation of β-AR, including internalization with subsequent degradation of the receptors and inhibition of the β-AR biosynthesis.

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