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Search Results: 1 - 10 of 13182 matches for " Exercise test "
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Aerobic Threshold for Exercise Prescription  [PDF]
Laura Stefani, Gabriele Mascherini, Giorgio Galanti
International Journal of Clinical Medicine (IJCM) , 2010, DOI: 10.4236/ijcm.2010.11002
Abstract: The Aerobic Threshold (AerT), is an aged cardiovascular parameter not commonly used to evaluate the heart’s performance in athletes. It indirectly evaluated by ventilator parameters during Cardio Pulmonary Test (CPT). Considering that” exercise as prescription therapy “for the diseases, includes training normally established around at the 40% of the peak VO2, this parameter could be taken in care as initial level for the effort prescribed. The aim of the study was to estimate the behavior of the AerT and also Anaerobic Threshold (AT), VO2max in sedentary people. A group of athletes coming from different sports at the same and highest dynamic component were enrolled as control. A group of 41 athletes (16 soccer, 10 basket and 15 cyclists) and 9 healthy subjects were submitted to a CPT. The AerT, AT (assessed by Vslope method) and VO2max were evaluated. The statistical analysis was performed with T student test (P < 0.05 significant). As expected in sedentary all the values were lower than athletes, however for Aer T value appears to be not significantly inferior respect of this one, with the exclusion of the comparison with the cyclists. In sedentary the AerT measure seems to give additional information in evaluating the cardiovascular performance. The VO2max and AT remain the main parameters in defining the athletes performance. Therefore we cannot exclude any further utility of the AerT in normal subject but regularly trained.
Effects of a Cardiac Rehabilitation Program in Patients with Congenital Heart Disease  [PDF]
Nathalie Dedieu, Luis Fernández, Elvira Garrido-Lestache, Inmaculada Sánchez, Maria Jesus Lamas
Open Journal of Internal Medicine (OJIM) , 2014, DOI: 10.4236/ojim.2014.41004
Abstract: The beneficial effects of the programs of cardiac rehabilitation in adults are widely known. Nevertheless, the accomplishment of these programs in patients with congenital heart is scarcely developed. In this study, we want to evaluate the preliminary results of a program of cardiac rehabilitation. Patients and methods: Thirty-three patients aged 8 to 40 completed the rehabilitation program. Thirty-one of them had an operated congenital heart disease, one had an implantable cardioverter defibrillator, and another was a patient with arterial hypertension and obesity. Data before and after the program were compared. Results: Improvements were found in all of the measured parameters. We found a statistically significant difference in maximum heart rate, exercise duration, foreseen heart rate’s percentage and increase of metabolic equivalents. Twenty-seven of 33 patients noticed a significant improvement in their quality of life at the end of the program. Conclusion: Initial results seem to be encouraging and we consider the experience very positive since the program achieved an improvement in the functional capacity of our patients. In our opinion, these observations and the results of our study provide strong arguments for the incorporation of cardiac rehabilitation into the care of many patients with congenital heart disease.
Validation of a 2 Minute Step Test for Assessing Functional Improvement  [PDF]
F. Haas, G. Sweeney, A. Pierre, T. Plusch, J. Whiteson
Open Journal of Therapy and Rehabilitation (OJTR) , 2017, DOI: 10.4236/ojtr.2017.52007
Abstract: Introduction: Although many cardiopulmonary patients require home care services, the 6-minute walk test (6MWT) is unusable in most dwellings for objectively evaluating exercise capacity because it requires a 20 - 30 meter hallway. To meet this need, we developed a 2-minute step test (2MST): stepping up and down an 8 inch step for 2 minutes (1 step = bilateral step up + step down). Purpose: Evaluate the statistical validity, reproducibility, and sensitivity of the 2MST in assessing exercise capacity. Method: We compared the heart rate, oxygen saturation and perceived exertion obtained during performance of 2MST with those obtained during the 6MWT. Results: Comparing 2MST and 6MWT in 158 subjects for validity, r = 0.925 (P < 0.0001). They were statistically equivalent in heart rate (98 ± 4 and 94 ± 4 bpm), oxygen saturation (96 ± 0.5 and 95 ± 0.6%), rating of perceived exertion (14.6 ± 0.4 and 13.4 ± 0.4), and blood pressure (130 ± 4/62 ± 3 and 128 ± 3/62 ± 2 mmHg), (mean ± SE, 2MST and 6MWT, respectively). Reproducibility revealed small learning effects: 8% and 5% for the 2MST and 6MWT, respectively (P < 0.001). Sensitivity of the 2MST was high, based both on the number of steps achieved by inpatients (27 ± 13 steps, mean ± SD), outpatients (48 ± 14 steps), and healthy subjects (64 ± 18 steps) (P < 0.001), and by the outpatients before (36 ± 11 steps) and after (42 ± 14 steps) rehabilitation (P < 0.001). Conclusion: The 2MST is valid, reproducible, sensitive, safe, well-tolerated, and is a suitable substitute for the 6MWT.
Exercise-Induced Bronchoconstriction Diagnostics: Impact of a Repeated Exercise Challenge Test  [PDF]
Maj R. Angell, Liv Berit Augestad, Thorbj?rn S. Haugen, Anne Frostad, Thor Arne Gr?nner?d, Trine Stensrud
Open Journal of Respiratory Diseases (OJRD) , 2014, DOI: 10.4236/ojrd.2014.42009
Abstract:
Exercise-Induced bronchoconstriction (EIB) is related to increased ventilation (VE) during exercise and describes the transient airway narrowing following exercise. A reliable diagnosis is essential for optimal treatment. The impact of a repeated exercise challenge test (ECT) in a clinical setting is not well established and conducting a repeated ECT with the possibility to adjust the exercise intensity on an individual basis may give more information. The aim of the study was to evaluate the test-retest reliability of an ECT for EIB and its association with exercise intensity. Methods: After examination by a pulmonologist, 20 referred subjects with symptoms strong indications of Exercise-Induced bronchoconstriction performed two consecutive exercise challenge tests on a treadmill. The exercise intensity of the repeated test was adjusted. Forced expiratory volume in 1 second (FEV1) was measured before and 1, 3, 6, 10, and 15 minutes after exercise. EIB was defined as a reduction of ≥ 10% in FEV1. Ventilation and heart rate were measured during exercise. Results: Five subjects tested positive in both tests, and ten subjects tested negative in both tests. Three subjects tested positive in the first test only, while two subjects tested positive in the second test only. The exercise intensity was not significantly different between the two tests for any of the subjects. Conclusion: There were 25% divergences in the diagnostic results of two consecutive exercise challenge tests. The difference in the test results was not explained by a difference in the exercise intensity.
Impact of bronchodilator therapy on exercise tolerance in COPD
B Aguilaniu
International Journal of Chronic Obstructive Pulmonary Disease , 2010, DOI: http://dx.doi.org/10.2147/COPD.S7404
Abstract: ct of bronchodilator therapy on exercise tolerance in COPD Review (5604) Total Article Views Authors: B Aguilaniu Published Date March 2010 Volume 2010:5 Pages 57 - 71 DOI: http://dx.doi.org/10.2147/COPD.S7404 B Aguilaniu HYLAB, Laboratory of Clinical Physiology and Exercise, Grenoble, France Abstract: Exercise tolerance is an important parameter in patients with COPD and a primary goal of treatment is to reduce dyspnea to facilitate physical activities and improve health-related quality of life. This review examines the link between expiratory flow limitation and dyspnea to explain the rationale for the use of bronchodilators and review the characteristics of different types of exercise tests, with specific focus on which tests are likely to show a response to bronchodilators. An earlier literature search of studies published up to 1999 assessed the effects of bronchodilator therapy on dypsnea and exercise tolerance among patients with COPD. This current review examines the clinical evidence published since 1999. Thirty-one randomized studies of exercise tolerance associated with short- and long-acting β2-agonists and anticholinergics were identified. Evidence for the efficacy of bronchodilators in enhancing exercise capacity is often contradictory and possibly depends on the exercise test and study methodology. However, further studies should confirm the benefit of long-acting bronchodilators in improving spontaneous everyday physical activities.
Prueba de caminata de carga progresiva (shuttle test) en enfermedad pulmonar obstructiva crónica grave
Sívori,Martín; Sáenz,César;
Medicina (Buenos Aires) , 2010,
Abstract: the shuttle test (st) is a maximal exercise field test with scarcely used in argentina. our objective was to compare different variables of exercise response to st vs. other exercise tests such as six minute walking test (smwt) and cardiopulmonary with maximal oxygen consumption (vo2max) in severe copd patients. a total of 21 stable severe copd patients (gold iii and iv stages) were evaluated with smwt, st and vo2max test. in all patients spirometry was performed with bronchodilator response, arterial gas and chronic respiratory questionnaire to evaluate quality of life. cardiac frequency, oxygen saturation and dyspnea scale by borg in response to exercise tests were evaluated. paired t student and pearson tests were used, defining p < 0.05 as significant. copd patients were 65.27 ± 12.72 years old and had severe airflow obstruction (fev1: 33.23 ± 4.94%). the exercise response to smwt was 297.85 ± 173.24 meters; st: 318.8 ± 42.42 meters and vo2max test: 14.7 ± 5.44 ml/kg/min. the correlation between smwt and st was: r: 0.52(p < 0.00085); between st and vo2max (l/min): r: 0.78 (p < 0.00079), and st and vo2max (ml/kg/min): r: 0.81 (p < 0.00065). moderate correlation was observed in final heart rate (r: 0.41, p < 0.00091), maximal borg dyspnea scale (r: 0.47, p < 0.00099) and high correlation with final oxygen saturation (r: 0.81, p < 0.00087) between st and vo2max. there was no correlation between st and fev1 and st and quality of life. our conclusion: the st is a maximal, simple and low cost test. it has high correlation with cardiopulmonary test with vo2max measurement. it is a useful tool in those laboratories for pulmonary evaluations without possible availability of expensive tests.
Teste ergométrico em crian?as e adolescentes: maior tolerancia ao esfor?o com o protocolo em rampa
Silva, Odwaldo Barbosa e;Saraiva, Lurildo C. Ribeiro;Sobral Filho, Dário C.;
Arquivos Brasileiros de Cardiologia , 2007, DOI: 10.1590/S0066-782X2007001800007
Abstract: objective: compare exercise tolerance by children and adolescents submitted to treadmill stress test (tst) following bruce protocol (bp) or ramp protocol (rp), as well as describe velocity and inclination reached with ramp protocol to help set protocol exercise standards. methods: observational, case-based study, with history control of 1,006 children and adolescents in the 4 to 17-year-old range who were submitted to tst between october, 1986 and february, 2003, and who concluded one of the two protocols. those who interrupted their et for other reasons rather than physical exhaustion, those on medication that interfered in hr and those with physical constraints to exercise were excluded. statistical analysis of data considered p<0.05 as significance level; with confidence interval at 95%. results: exercise time close to 10 minutes in rp was significantly higher than in bp. hr max reached was higher than 180 bpm in both protocols. inclination showed to be slightly higher in younger girls in bruce protocol. velocity and vo2 max showed to be higher for all age ranges for those in the ramp protocol. conclusion: velocity and inclination reached with ramp protocol may be used as reference to help set ramp protocol exercise, which showed superior on exertion tolerance as compared to bruce protocol.
Exercise-Induced Ventricular Fibrillation: Seven Years Follow-Up
G?kmen Gemici,Refik Erdim,Ahmet Oktay
Balkan Medical Journal , 2011,
Abstract: We present a 7-year follow-up of a 55-year-old male who experienced ventricular fibrillation during the recovery period of exercise testing and refused implantation of an ICD. Normal left ventricular systolic function was found on echocardiographic examination, and coronary angiography revealed only a side branch disease with a vessel diameter of less than 2 millimeters. The patient was discharged on metoprolol and ASA in addition to his previous treatment with lisinopril and simvastatin. Outpatient cardiac evaluation by repeated 24-hour ECG monitorizations (Holter) revealed normal findings. On follow up visits every six months for the past seven years, the patient was found to be asymptomatic.
RESPIRATORY GAS EXCHANGE INDICES FOR ESTIMATING THE ANAEROBIC THRESHOLD
Geir Solberg,Bj?rn Robstad,Ole H. Skj?nsberg,Fredrik Borchsenius
Journal of Sports Science and Medicine , 2005,
Abstract: Several methods are used for estimating the anaerobic threshold (AT) during exercise. The aim of the present study was to compare AT values based on blood lactate measurements with those obtained from computerised calculations of different respiratory gas indices. Twelve healthy, well-trained men performed a stepwise incremental test on both treadmill and cycle ergometer. Respiratory gases were measured continuously, and blood samples were drawn every third minute. AT was determined, based on 1) blood lactate concentrations (Lactate-AT), 2) respiratory exchange ratio (RER-AT), 3) V- slope method (Vslope-AT), and 4) ventilatory equivalent for VO2 (EqO2-AT). Lactate-AT and RER-AT values showed similar values, both on treadmill and on cycle ergometer. EqO2-AT showed a trend towards lower values for AT, while Vslope-AT gave significantly lower values for AT for both exercise modes. Bland-Altman plots showed an even distribution of data for RER-AT, while a more scattered and skewed distribution of data was observed when EqO2-AT and Vslope-AT were compared with Lactate-AT. The study demonstrates that RER-based estimates of AT correlate well with the blood lactate-based AT determination. The RER method is non-invasive and simple to perform, and, in the present study, seemed to be the best respiratory index for estimation of AT.
Physical activity in persons with Parkinson disease: A feasibility study  [PDF]
C. Allyson Jones, Marguerite Wieler, Jennifer Carvajal, Logan Lawrence, Robert Haennel
Health (Health) , 2012, DOI: 10.4236/health.2012.431173
Abstract: Background: Physical activity for persons with Parkinson Disease (PD) is recommended yet little is known about the physical activity levels in this patient population. The primary aim was to assess the feasibility of using a direct measurement and self-report measure of physical activity in patients with PD. Methods: Physical activity was recorded in 11 out-patients with mild to moderate PD. An accelerometer based sensor system (SenseWear Pro Armband?) which was worn continuously over 2 days was used to measure physical activity. Minute by minute energy expenditure and steps per day were recorded. Self-report physical activity was measured using the Short QUestionnaire to ASsess Health-enhancing physical activity (SQUASH) which assessed average weekly activity. Results: Using the accelerometer based sensor system, 83% of the day was spent in sedentary activity with the majority active time spent at a light intensity (2.7 [SD 2.0] hrs/day). Self-reported mean number of hours for activities greater than 2.0 METs was 3.4 (SD 1.5) hrs/day. Although the overall time spent in activity did not differ between the accelerometer and SQUASH, partici- pants reported a higher proportion of activities at the moderate and vigorous intensities than the accelerometer recorded. Conclusions: Measurement of physical activity is a challenge in persons with PD given the disease-related symptoms. We found that, by all accounts, a self-report measure of physical activity should be complemented with a direct measure of physical activity.
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