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At least 253 records · Page 14Linked to original sources
PubMed1984

[Differential diagnostic value of bicycle ergometry in clinical variants of syncopal states].

Bicycle ergometry was used for the first time in 78 patients with syncopal states. Three types of response to the test were identified: 1) intensely rapid pulse with a relatively stable blood pressure (BP) (vasovagal syncopes); 2) a considerable elevation in BP in combination with a moderate increase in the heart rate and a negative pattern on the ECG (in cardioinhibitory syncopes); 3) rapid pulse and augmentation of BP values (in healthy subjects and in 25.5% of syncopal states). The results obtained may be used for expert evaluation of the syncopal states, the identification of the major mechanisms of the pathogenesis and administration of an adequate therapy.

Adolescent↗
PubMed1984

[Comparative evaluation of the importance of transesophageal electrical stimulation of the left atrium and bicycle ergometry in diagnosing ischemic heart disease].

Comparisons were made between the clinical picture, results of bicycle ergometry and selective coronaroangiography, and the data of transesophageal electrical stimulation of the left atrium in 52 patients, including 31 with stenosing coronary atherosclerosis. The feasibility of applying the transesophageal stimulation for the diagnosis of coronary heart disease is shown. The sensitivity of transesophageal electrical stimulation of the left atrium in detecting stenosing coronary atherosclerosis was 81%, its specificity being 79%.

Adult↗
PubMed1983

Prescriptive arm ergometry to optimize muscular endurance in acutely injured paraplegic patients.

This study compared the effect of (1) continuous, (2) intermittent, and (3) graded exercise on the cardiopulmonary responses of 12 acutely injured paraplegic individuals having neurologically complete spinal lesions, between T7 and T12, and seven able-bodied control subjects. Continuous exercise consisted of cranking an arm ergometer at a constant rate of 30W. Intermittent exercise consisted of arm ergometry at 60W for 30-second periods interspersed with 30-second rest periods. In graded exercise, subjects worked for consecutive two-minute periods at rates of 10, 20, 30, 40, and 50W with no rest periods between work periods. Subjects exercised for 10 minutes or until they reached subjective fatigue. Heart rate (HR) and oxygen consumption (VO2) were measured during rest and work. Paraplegic subjects performed 4.93, 4.89, and 4.95 watt-hours of continuous, intermittent, and graded exercise respectively. Comparable figures for control subjects were 4.98, 4.91, and 4.96 watt-hours. There was a high degree of correlation between HR and VO2 in both paraplegic (r = 0.80) and normal (r = 0.85) subjects. Both VO2 and HR were highly correlated with work load in each group. Paraplegic subjects had significantly higher HRs (p less than 0.001), respiratory quotients (p less than 0.05), and ventilatory volumes (p less than 0.05) than control subjects. Graded exercise produced a significantly higher HR than continuous or intermittent exercise (p less than 0.001) during the final data collection period. Oxygen consumption during graded exercise was higher than VO2 for continuous or intermittent exercise (p less than 0.01) during the final data collection period.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1983

[Bicycle ergometry test results in persons with ischemic heart disease detected in mass screening].

Bicycle ergometry in 40-59 year-old male patients with coronary heart disease, identified during mass prophylactic examination on the basis of epidemiological criteria, has shown that in patients with angina pectoris of effort and no myocardial infarction in history positive exercise tests are observed in 20,8% of cases, while in patients with painless CHD forms positive results are observed in 15.4% of cases. Positive exercise tests are the most often in patients with daily anginal attacks and in those with ST depression and flat negative T waves.

Adult↗
PubMed1978

Ambulatory ECG monitoring and bicycle ergometry: correlation with findings on coronary arteriography.

Ambulatory ECG monitoring during everyday activities (AEM) and a multistage submaximal bicycle ergometric test (BET) was performed on a series of 48 patients suffering from precordial symptoms or pain. The results of these tests were compared with the results of coronary arteriography. In 20 subjects with a negative AEM and BET the coronary arteriography was normal in 18, moderately pathological (30-60% narrowing) in 1, and severely pathological (greater than 60% narrowing) in another. In 23 subjects in whom both AEM and BET disclosed ST-T alterations, 20 had severely pathological and 1 moderately pathological coronary arteriograms; normal coronary arteries were found in only 2 subjects. Only 5 of the total of 48 patients of the series showed a discrepancy between the results of AEM and BET. The findings on coronary arteriography confirmed that patients with a normal AEM and BET have a very high probability of having normal coronary arteries, while if both tests are positive the patient will most likely have advanced coronary pathology. When the two tests were concordant, the number of false positive and false negative results were slightly less than if ergometry was performed alone. Although AEM does not provide the quantitative aspect of effort testing, it does have the advantage of avoiding the risk of unusual physical effort for the patient.

Activities of Daily Living↗
PubMed1982

[Apex cardiography in evaluating the subendocardiac blood flow and coronary reserve in a comparison with coronary radiography and bicycle ergometry data in ischemic heart disease].

Apexcardiograms (ACG) were studied in patients with chronic ischaemic heart disease in comparison with the bicycle ergometry data and coronarography. An increase was established in the coefficient A/E of ACG in lesions of the coronary vessels and in the coefficient A/EO in decreased tolerance to physical stress and in decreased coronary reserve. Despite reliable decrease of the subendocardial bloodflow index in patients with diseased coronaries no correlation between these parameters and the number and general percentage of the affected coronaries could be established. Such correlation was seen only through analysis of the duration of the period of isovolumic relaxation. In patients with the diseased coronaries a significant correlation of coefficients A/EO, A/E, AO/EO and the index of subendocardial bloodflow with the magnitude of the coronary reserve was observed.

Adult↗
PubMed1981

The mechanical efficiency of wheelchair dependent women during wheelchair ergometry.

Few previous studies have attempted to study the response of disabled women to work in a wheelchair. The purpose of this study was to investigate the mechanical efficiency of wheelchair dependent women (WCD) during progressively loaded wheelchair ergometry. Five WCD subjects with an average confinement of 17.8 years were compared to five able bodied women (AB). Neither maximal oxygen uptake, 1.121 WCD and 1.485 AB (L X min-1) or maximal power outputs, 41.6 WCD and 44.1 AB (watts) were significantly different for the groups. The WCD group, however, demonstrated significantly higher mechanical efficiencies at comparable power outputs, p greater than 0.05. This difference remained when comparisons at about 60, 80, and 90% of VO2 max were made. The average efficiencies over these metabolic levels were 14% WCD and 10.6% AB. Stroke length consistently reduced as power outputs increased with the values lower for the WCD subjects. Average values for the submaximal workloads were 3.17 WCD and 3.76 AB (m x stroke-1) which meant a difference that was 18.6% greater in length for the AB group. The possible influence of this upon the efficiency of wheelchair locomotion was discussed.

Adult↗
PubMed1980

[Change in the blood coagulating properties during ergometry in ischemic heart disease].

During ergometric examination of 92 patients with ischemic heart disease and 35 healthy individuals blood coagulation was studied by recording thromboelastograms and electrocoagulograms and determining blood platelet aggregation, fibrinolytic activity and levels of fibrinogen and free heparin in blood. In 65 patients these values in ergometry were determined after treatment with obsidan. It was shown that during physical load there is an intensification of hypercoagulation processes embracing all phases of blood coagulation with simultaneous activation of anticoagulation mechanisms; in contrast to healthy individuals patients with ischemic heart disease are marked by prevalent hypercoagulation. Shifts in the system of blood coagulation depend on the volume of physical load. Heparin and fibrinolytic activity increases up to a certain load level, but when this is surpassed hypercoagulation processes prevail. This may be used as an additional criterion in determining the level of the training regimen in physical rehabilitation of patients.

Adult↗
PubMed1980

[Comparison of bicycle ergometry test data in patients with stenocardia and cardiac-type neurocirculatory dystonia].

The results of the bicycle ergometry test in 274 patients with angina pectoris and 228 patients with cardiac-type neurocirculatory dystonia are analysed. Tolerance to physical exercise was much lower in individuals with angina pectoris than in patients with neurocirculatory dystonia. Changes in the repolarization phase on the ECG were encountered more frequently in patients with angina pectoris (82.7%) than in those with neurocirculatory dystonia (30.7%). Changes in the ST segment prevailed in the former (77.2%) and changes in T wave in the latter (20.3%). Depression of the ST segment by 1 mm and more was recorded in 10.4% of patients with neurocirculatory dystonia. Analysis of additional diagnostic criteria, however, suggested that these individuals had a false-positive test.

Adult↗
PubMed1978

[Determination of maximal aerobic capacity using simple ergometry in various training conditions].

Exercise tests were performed in 21 competition rowers, before and after a 4 month training period. The significance of differences in VO2, VT, and specific ventilation (Sp. V) at equal work loads, were tested. The influence of the relative VO2 Trel VO20 = VO2/kg BW) on the correlation between maximal workload (Wmax) and VO2 max, was investigated. The VO2 at all workloads, showed a highly significant increase after the period of training. Multiple linear regression analysis, demonstrates an increase of the correlation coefficient from r = 0,65 (single) to R = 0,95 (multiple). The precision of estimation concerning maximal exercise, improves considerably when rel. VO2 is taken into account, as well as, Wmax. The rel. VO2max as a parameter for the state of training can be estimated from an exact training history (total amount of training with direct cardiopulmonary influence = endurance type of training). Combined with Wmax this training history can be included into the multiple regression equation VO2max - 1060 + 6.3 Wmax + 57.3 rel. VO2max. By these means, including ergometry and the training history, even a practicing internist can to a fair estent estimate the capacity for sport.

Exercise Test↗
PubMed1995

[Indicators of bicycle ergometry after heart transplantation].

Exercise tolerance in postcardiac transplantation patients versus healthy controls was studied at different intervals after the surgery using bicycle ergometry. Being low after the transplantation, exercise tolerance in the patients increased throughout the rehabilitation period but still did not reach the values characteristic for healthy subjects. Initial heart rate in the above patients was higher, while chronotropic and inotropic reserves of the transplanted heart appeared lower than in the controls. The data obtained help objectively assess the condition of the patients with transplanted heart.

Adolescent↗
PubMed1995

A behavioral and environmental intervention to reduce false-positives in submaximal bicycle ergometry testing.

Although submaximal cycle ergometry testing (CET) can provide a good estimate of an individual's physical fitness, anticipatory heart rate increases accompanying pre-test anxiety can negatively affect the outcome of a submaximal CET. The present study evaluated the efficacy of a low-cost, technician-administered anxiety reduction intervention in the natural setting to reduce false-positives by removing heart rate feedback, and offering cognitive distraction and controlled breathing techniques. There were consistent findings for removing heart rate (HR) feedback and offering relaxation and distraction techniques on increasing the passing rate and decreasing HR at minute 1. Furthermore, when evaluated by gender, this minimal intervention also had an effect on increasing VO2max estimates, decreasing average HR, and increasing the passing rate for the female subjects. Interestingly, there were no effects found for any of the treatment conditions for the male subjects. The intervention's implications and future research directions are discussed.

Anxiety↗
PubMed1995

[Computer-assisted evaluation of bicycle ergometry for determining level of endurance training in physical fitness].

Recent studies have provided evidence of the importance of aerobic endurance training as an independent factor with regard to reducing morbidity and mortality from cardiovascular diseases. Clinical routine shows that test methods and training recommendations are often not specific enough for efficient, yet safe exercise. Software is presented which allows cycle ergometry to be used according to standard criteria in clinical practice, with special attention to the requirements for training with health benefit. Technical requirements: 1. Cycle ergometer with the possibility of increasing exercise intensity by Watt (W) increments; 2. ECG or other device for accurate pulse monitoring; 3. IBM-compatible PC and printer. Based upon the input of data on birth date, sex, height, weight, and heart rate (HR) at rest the programme calculates body surface area, the reference value of physical work capacity of matching subjects and the expected maximal HR (HRmax,exp) and HRmax,exp x 0.95. After the test, input of HR at exhaustion (HRmax), maximum achieved W-increment and time cycled at this intensity in seconds provides various parameters of the individual work capacity. The maximal work performance W (Wmax) is calculated. This value is used to provide further calculations of Wmax.kg-1, VO2max.kg-1 and the maximal work performance as a percentage of the normal value (LF%). The software provides an individual training plan with incremental extension of training time and a prescription for heart rate controlled intensity of endurance training based upon medically accepted training principles. The software enables a standard test to be used and recommends medically efficient and secure quality and quantity guidelines for endurance training.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1995

[Effects of 4-week ergometry training at an intensity of 30% versus 50% of maximum performance in an inpatient setting].

We investigated the effects of bicycle ergometer training (BET, weekly training time: 120 min, consisting of 8 units of 15 min). In a centre for cardiovascular rehabilitation two groups of 15 patients with coronary heart disease and/or hypertension and/or hyperlipidaemia underwent a four-weeks training period. All patients avoided other training exercises, they all had the same physiotherapy such a massage and the same diet of 800-1200 kcal/day. Current medication was kept constant. The main differences between the groups was the intensity of the training regimes: 30% versus 50% of the individual maximal physical working capacity (PWC), as determined by symptom-limited bicycle ergometry and controlled by an individual training heart rate. The higher intensity of training led to a highly significant increase of 16% in PWC (p < 0.001), whereas the group with the lower training intensity improved by only 5% (p < 0.05). The main effects on body weight (reduction in both groups of about 6%), fat metabolism (significant reduction in cholesterol and low density lipoprotein (LDL) levels in both groups), heart rate and blood pressure (significant decrease in both groups) showed no significant differences between the two groups. In general it can be assumed that the main effects of the 4-week indoor rehabilitation on fat metabolism and blood pressure are due to the diet and weight loss. The 4-week period of endurance training was obviously too short to produce any additional effects. The more intensive aerobic training, which was more effective on PWC, did not reveal better results on fat metabolism, heart rate or blood pressure.(ABSTRACT TRUNCATED AT 250 WORDS)

Blood Pressure↗
PubMed1995

Estimation of aerobic capacity from submaximal cycle ergometry in women.

Simple, valid, and reliable methods of estimating maximal oxygen uptake (VO2max) are needed for epidemiologic studies of physical activity, to evaluate fitness for job performance, and to assist in prescription of exercise. Such estimations in women have not received due research attention. Heart rate responses to submaximal cycle ergometry and VO2max during maximal treadmill and cycle ergometer testing were measured in 37 healthy women aged 19-47 yr (X = 31.7 +/- 7.9). The submaximal test was very reliable on retest (r = 0.92), but overestimated measured treadmill VO2max (X = 2.42 vs 2.23 l.min-1; r = 0.76, SEE = 0.229). The submaximal test also greatly overestimated maximal cycle ergometer VO2max (X = 2.42 vs 2.06 l.min-1; r = 0.70, SEE = 0.340). Similar 8.5% (treadmill) and 18.5% (cycle ergometer) overestimation by the submaximal test were found for VO2max relative to body weight. A simple submaximal exercise test is highly reliable as an estimate of VO2max when used for women. It also provides a reasonably good estimate of treadmill measured VO2max.

Adult↗
PubMed1993

[The single-dose screening of nitrates, calcium antagonists, beta-adrenoblockaders and their combinations in patients with stenocardia of effort by using the paired bicycle ergometry method].

Fifteen males with stable angina pectoris were screened for efficacy of antianginal drugs in single doses (isosorbide dinitrate, 10 mg; nifedipine, 20 mg; propranolol, 40 mg) and in combinations (ID+Pr, ID+Nf, Nf+Pr, Nf+Pr+ID). The findings at paired bicycle ergometries indicated that ID was most beneficial in monotherapy. Only two combinations (Nf+Pr and Nf+Pr+ID) were superior when compared to single drugs. Combinations ID+Pr and ID+Nf had the same efficacy as ID. Interaction of the drugs assessed with two-dimensional variance analysis was insignificant in all the combinations. Nf+Pr+ID combination had no advantages over two-drug combinations and induced worse tolerance.

Adrenergic beta-Antagonists↗
PubMed1993

[Combined use of cold (chloroethyl) and ergometry tests in the diagnosis of vasospastic angina].

The study was undertaken to examine the informative value of cold (chloroethyl) and ergometrine tests in the diagnosis of vasospastic angina. A total of 36 patients with clinical and electrocardiographic signs of vasospastic angina were studied. They underwent coronary ventriculography, Holter monitoring, bicycle ergometry with continuously increasing or single submaximum exercise, pulmonary hyperventilation, cold, ergometrine, and chloroethyl tests. The examinations have shown that cold and ergometrine tests are of informative value in the diagnosis of vasospastic angina.

Adult↗