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PubMed1990

The effect of training specificity on maximal and submaximal physiological responses to treadmill and cycle ergometry.

The purpose of this study was to investigate the effect of training specificity during maximal and submaximal treadmill (TM) and bicycle ergometer (BE) exercise. A group of trained runners (RG, no. 7) and trained bikers (BG, no. 7) underwent graded exercise testing on both TM and BE, utilizing the same testing protocol within each exercise mode for both groups. Data for VO2 HR and BP were collected during each 3 min stage. Group by trial ANOVAs followed by Tukey's post hoc analysis, showed no group difference in VO2max, HRmax or BPmax during TM exercise. However, during each of the first four submaximal 3 min stages, VO2 and HR were significantly less (p less than .05) in RG vs BC, with no significant difference in BP. During BE exercise, VO2max was significantly less for both groups compared with TM (RG-59.6 vs 50.1 ml.kg-1.min-1 BS-59.4 vs 55.1 ml.kg-1.min-1) (p less than .05), with BG exhibiting the greater BEmax (p less than .05). RG also had a reduced HRmax during BE exercise (p less than .05). Both groups showed greater BPmax during BE vs TM exercise (p less than .05). Although submaximal VO2 was slightly less during BE for each stage in RG than BG, these differences were not significant as measured either by ml.kg-1.min-1 or l.min-1. Both submaximal HR and BP mirrored the VO2 response, with no significant differences between RG and BG. These data agree with previous studies, showing a greater effect of training specificity during maximal BE than during maximal TM exercise. However, during submaximal exercise, training specificity appear to have a greater effect during TM than BE exercise.

Adult↗
PubMed1990

[Changes in systemic and intracardiac hemodynamics during bicycle ergometry in patients with fibrillation arrhythmia treated with allapinin before and after sinus rhythm recovery].

In atrial fibrillation, allapinine was shown to enhance rhythm by 7% and to increase cardiac output (p less than 0.05), as well as to slightly lower mean blood pressure and peripheral vascular resistance at rest. With exercise, both in atrial fibrillation, and sinus rhythm, there was a decrease in end-diastolic and end-systolic volumes of the left ventricle (p less than 0.05), a slight drop in ventricular ejection, that was statistically significant only with sinus rhythm (p less than 0.05). Physical exercise was not followed by an apparent additional aggravation of myocardial contractility, which makes allapinine preferable for long-term application to preserve sinus rhythm in patients without evident signs of heart failure.

Aconitine↗
PubMed1990

Cardiorespiratory responses of mentally retarded adults to air-brake ergometry and treadmill exercise.

The graded treadmill (TM) exercise test is considered the optimal mode of exercise for evaluating the cardiovascular fitness of mentally retarded (MR) individuals. A new mode of exercise, the Schwinn Air-Dyne ergometer (SAE), was evaluated and compared to the TM for determining the cardiovascular fitness of adults. Twelve MR adults performed maximal exercise tests to volitional exhaustion, on separate days, on the SAE and TM. Maximal heart rates, oxygen consumption, minute ventilation, and respiratory quotient were similar for both exercise tests. These results indicate that the SAE is comparable to TM exercise in assessing the cardiovascular capacity of MR adults.

Adult↗
PubMed1989

[Diastolic heart function during bicycle ergometry in patients with hypertension and different mass of the left ventricle].

Changes in parameters for cardiac filling and pump functions during graded exercise were studied in 29 hypertensive patients with various left ventricular myocardial mass and 30 healthy subjects by unidirectional echocardiography. The volume of early diastolic filling decreased and that of diastasis and atrial systole increased with increasing left ventricular mass. These changes were found during graded exercises rather than at rest.

Cardiomegaly↗
PubMed1989

[The diagnostic value of delta-R and delta-Q as positive criteria of the ergometry test in a group of patients with angina pectoris of effort].

ECG-exercise tests were performed in 29 patients affected by effort chest pain. All patients underwent coronary angiography and/or revealed positive results in the cycloergometer effort test. The aim of the study was to evaluate ultrasonic variations in the R and Q waves due to maximal effort, so as to increase the information provided by the effort ECG. In the coronary angiographic test, 21 out of 29 patients revealed significant hemodynamic coronary stenosis; 10 patients were affected by previous myocardial necrosis; 8 patients showed no hemodynamic coronary lesions (OV). In the OV patients a statistically significant increase was observed in the Q wave at maximal effort in comparison with average basal values; on the other hand, there was a decrease, although not significant, in voltage at peak effort in patients with coronary stenosis. R wave amplitude was smaller in comparison to basal values in OV patients, while a significant increase was observed in the 21 patients with coronary lesions.

Aged↗
PubMed1989

[Bicycle ergometry training during the sanatorium stage of patient rehabilitation after insertion of aortic valve prosthesis].

A sanatorium stage in the rehabilitation of patients who have aortic valve prosthesis is of great importance. The impact of bicycle ergometric trainings on these patients' physical rehabilitation had been little studied. Bicycle ergometric testing prior to and following the training and examination of external respiratory parameters enabled their efficiency to be increased. Bicycle ergometric trainings were demonstrated to improve the patients' status, to increase their physical working capacity, to result in a positive dynamics in heart rates and oxygen consumption. Following 1 year, the patients who had had trainings showed higher physical fitness for work, better indices in oxygen consumption, oxygen pulse, and metabolic units.

Adolescent↗
PubMed1989

[Serial infrared and ultraviolet whole body irradiation and placebo and ultraviolet irradiation of autologous venous blood in peripheral arterial occlusive disease. 1. Treadmill ergometry, metabolic, rheologic and hemodynamic parameters].

In 21 patients suffering from obstructive peripheral arterial disease stage II according to Fontaine, therapeutic efficacy of serial whole body irradiations (infrared or ultraviolet radiation) and pretended or real ultraviolet light blood irradiations was evaluated. Before, during and after treatment the following parameters were monitored: walking distance, oxygen partial pressure (quasi-arterial/venous), flow properties of blood (appearant blood viscosity, hemodynamics (peak flow, ultrasonics). There were no significant changes following both modalities of whole body irradiations either by sunshine-like ultraviolet light nor by infrared radiation, nor by pretended blood irradiation. In the same patients mean walking distance was prolonged threefold after ultraviolet irradiation of the patient's own venous blood and subsequent retransfusion. Simultaneously, oxygen utilisation was improved (enlarged arterial/venous difference), lactate concentration was decreased and apparent blood viscosity was diminished, whereas blood flow remained unchanged or only slightly improved. In this way the circulus vitiosus of obstructive peripheral arterial disease can be overcome. As a consequence of blood irradiation walking distance enlarges, providing better chances for physical training, which helps to extend walking distance furthermore.

Adult↗
PubMed1989

[Ergometry-induced silent ischemia--clinical and angiographic features].

This study was planned to clarify the clinical and angiographic attributes of patients with exercise induced silent myocardial ischaemia. The study sample consisted of 102 patients who had ischaemic exercise electrograms (greater than = 1 mm ST segment depression) and significant angiographic stenosis (greater than = 50% diameter stenosis), in at least one of the major coronary arteries. In 61 patients (60%) painful ischaemia was observed during exercise (group A) while in 41 patients (40%) only SD depression (silent ischaemia) occurred (group B). The groups were similar with respect to age, sex, history of diabetes and all angiographic parameters including the Gensini coronary score. A history of prior myocardial infarctions was observed more frequently (p less than 0.01) in patients with silent ischaemia (group B). Prior myocardial infarction may be a factor causing silent myocardial ischaemia.

Aged↗