the emergency severity index (esi) is a five-level triage system that has shown promising reliability and validity. according to esi algorithm, in the presence of danger zone respiratory rate (rr), heart rate (hr) or oxygen (o2) saturation, patients should be up-triaged from esi level 3 to 2 hence, the current study aimed to investigate the value of the measurement of vital signs in predicting ...

Inability to reach 85% of the predicted maximal heart rate for age during exercise stress testing (chronotropic incompetence) has been considered indicative of an uninterpretable or inadequate test. A new study from the Cleveland Clinic suggests that a submaximal heart rate response to exercise may be a significant independent risk factor for all-cause and cardiovascular death in individuals wi...

Twelve male patients, with effort angina and a history of cold intolerance, performed brief submaximal exercise bicycle tests with separation of inspiratory and room air. In one test, the patients exercised in a normal room (20°C), breathing either normal or very cold air (-35°C). In another test, environmental air \vas either normal or -10°C, and four combinations of inspiratory and room air w...

AbstractObjectives Recent studies investigated the determinants of trail running performance (i.e., combining uphill (UR) and downhill sections (DR)), while possible specific physiological factors specifically determining UR vs DR performances isolating DR) remain presently unknown. This study aims to determine cardiorespiratory responses outdoor time-trial explo...

BACKGROUND The aim of this study was to determine heat stress effect on physical capacity of semi-professional footballers in Iran by means of oxygen consumption measurement, heart rate monitoring and WBGT assessment environmental conditions. METHODS This study compared two different thermal environmental conditions related to sub-maximal exercise and its effect on human physical capacity. Th...

A new statistical signal processing method, which was called independent component analysis (ICA) was used to extract sub-signals of heart rate variability (HRV). Ten healthy volunteers (4F, 6M) were involved in this study. Electrocardiogram (ECG) recording was consisted of 6min when the volunteer was lying and another 6min when the volunteer was standing. HRV was extracted from ECG. According ...

Background: Heart failure with preserved ejection fraction (HFpEF) is characterized by diastolic dysfunction, as well alterations in ventricular filling and remodelling. This change function without reduced manifested exercise intolerance, arterial stiffness, measured pulse pressure, considered an independent predictor of functional capacity. Objective: To evaluate the correlation between sub-m...