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Showing 1 to 20 of 21 for “"GXT"”.
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Determination of Repetitive Jumping Intensity Relative to Measured VO<sub>2max</sub>
… .5 inch for 5 min, and one graded exercise test (GXT) using the Bruce protocol. Oxygen uptake (VO<sub>2</sub>), heart rate (HR), respiratory exchange ratio (RER), and rating perceived exertion (RPE) were measured each minute during each trial. Results of this study indicated that steady state …
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Does training with PowerCranks™ affect economy of motion, cycling efficiency, oxygen uptake and muscle activation patterns in trained cyclists?
… all subjects completed a graded exercise test (GXT) using normal bicycle cranks. Additionally, on a separate day the PC group performed a modified GXT using PowerCranks™ and cycled only until the end of the 200W stage (PCT). During the GXT and PCT, FeO2, FeCO2 and V.E were measured to determine …
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Development of rate related exercise-induced myocardial ischemia and risk of selected coronary disease endpoints
… determine whether serial graded exercise test (GXT) responses, known to have prognostic importance, in the coronary artery disease population generally, can differentiate certain cardiovascular morbidity and mortality endpoints among physically active patients. Data were obtained in 1989 at …
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Prognostic value of serial exercise test results in physically active coronary artery disease patients
… was to determine whether graded exercise test (GXT) variables known to have prognostic importance in the setting of severe-moderate coronary artery disease (CAD) and early post-myocardial infarction (MI) patients can also differentiate which physically active male patients with lesser disease …
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Predictability of VO2max from three commercially available devices
… completed a maximal graded exercise test (GXT) to determine VO2max. At visit 2, each device’s protocol was followed to estimate VO2max. Pearson correlations, repeated measures ANOVA, and a paired samples t-test were utilized to compare estimated VO2max values from the devices to measured …
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An Accurate VO2max Non-exercise Regression Model for 18 to 65 Year Old Adults
… completed a maximal graded exercise test (GXT) to assess VO2max (mean ± SD; 39.96 mL∙kg-¹∙min&sup-1; ± 9.54 mL∙kg-¹∙min-¹). The N-EX data collected just before the maximal GXT included the participant's age, gender, body mass index (BMI), perceived functional ability (PFA) to walk, jog, or …
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The Effects of Four Weeks of High Intensity Interval Training and β-hydroxy-β-methylbutyric Free Acid on the Onset of Neuromuscular Fatigue
… completed an incremental cycle ergometer test (GXT) to exhaustion. During the GXT, electromyography (EMG) signals from the right vastus lateralis were recorded to determine the power output at the onset of neuromuscular fatigue (PWCFT), and peak wattage was used to assign individual training …
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Comparative analysis of Karvonen and anaerobic threshold methods for prescribing exercise in healthy adult males
… subjects (N=10) performed graded exercise tests (GXT) to determine the exercise prescription. Each subject started at an initial load of 4 METS and thereafter increments were increased 0.33 METS every 20 seconds until volitional endpoints were reached. The variables measured during the GXT were …
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The elevation of metabolic rate after combined arm-and-leg versus leg-only exercise
… completed a graded maximal exercise test (GXT) on the Monark 880 cycle ergometer (Max HR=192.5 ± 2.3 bpm; Max V02=2.68 ± O.lll/min; Max RPE=19.5 ± 0.1) from which a heart rate corresponding to 70% V02max was chosen. Subjects then exercised on either a Monark 880 cycle ergometer (LE) or the …
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Cerebrovascular and respiratory adaptations following 4 weeks of transient hypercapnic aerobic exercise.
… a graded maximal aerobic exercise test (GXT). After 4 weeks of moderate-intensity aerobic excise with their assigned breathing condition, variables were reassessed at visit 2 (V2, post-study). Pulmonary function was assessed via spirometry, and respiratory parameters were assessed via a …
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Multiple sclerosis: Physiological, perceptive and neural responses to exercise intensity
… a symptom-limited graded exercise test (GXT), and through the post-exercise time-course to recovery. 54 PwMS (MSG, mean age 52.8years ± 9.0) and 17 healthy, age-matched controls (CG,mean age 48.9 years ± 5.7) performed a symptom-limited graded exercise test (GXT). Expired air (VO2), heart …
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Comparison of selected physiological performance variables between compliers and drop outs in a supervised exercise program
… were compared at the time of the six month GXT. A paired t-test analysis to determine physiological changes within both the late drop outs and complier groups revealed that neither group had made significant improvements in the physiological indicators over the six month period, except in …
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The prediction of functional capacity in active coronary artery disease patients using a physical activity questionnaire
… On the morning of their normally scheduled GXT, each individual completed the VSAQ and was administered a maximal exercise test on a treadmill utilizing a ramp style protocol based on their self estimation of functional capacity. Respiratory gas exchange values were recorded throughout and …
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Cardiorespiratory Influences on Executive Control Function
… and accuracy. A graded maximal exercise test (GXT) was used to measure cardiorespiratory fitness by assessing maximal oxygen uptake (VO2max). The error-related negativity (ERN), error positivity (Pe), and inhibitory N2 components, as well as behavioral measures of response speed, accuracy, …
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Defining a set of patient attributes that predict exercise performance outcome following an exercise training program in a population of coronary artery disease patients
… of baseline clinical and graded exercise test (GXT) variables in predicting exercise training outcome in cardiac rehabilitation patients. Data were extracted from the records of 60 cardiac patients who had participated in a community-based exercise program for 5-9 months. Two separate markers of …
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Aerobic Fitness and Attentional Control in Preadolescent Children
… fitness groups based on a graded exercise test (GXT) that assessed maximal oxygen consumption (VO 2 max). The ANT was used to measure the efficiency of three attentional networks: alerting, orienting, and executive control (i.e., interference control). This task has conditions that require both …
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Role of Genotype-by-Temperature Interactions in the Maintenance of Polygenic Sex Determination in the House Fly
… and 50 genes whose expression in head depends on GxT interactions. I found G×T effects on the expression of genes on the proto-Y chromosomes other than those in the sex determination pathway. Chemosensory, metabolic, immune, reproductive, and lifespan related genes are differentially expressed …
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The Difference in HR Response between Track and Treadmill Running at a Pre-determined, Self-selected Pace
… performed a maximal graded exercise test (GXT) and four exercise sessions. During the first exercise session, participants completed a 1-mile steady-state jog on either the track or treadmill at a self-selected submaximal pace that could be maintained for 30 minutes. The following three …
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VO2Max Comparison Between Seated and Standing Ergometry
… exhaustion during a Graded Exercise Test (GXT). Previous studies show V02max during standing cycle ergometry protocols and treadmill protocols to be similar, while seated cycle ergometry V02tnax values are lower. Conversely, other studies show seated and standing cycle ergometry V02max to …
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Effects of Eccentric Contraction Duration on Muscle Strength, Power Production, Vertical Jump and Soreness
… but there was a trend towards a difference (GxT, p = 0.07). No other significant (p > 0.05) group x time interaction effects were found for the performance variables. All groups showed significant main effects for time in 1RM (p < 0.001), vertical jump (p = 0.004), peak power (p < 0.001) and …
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