Physiological responses to prompt and sustained squatting. Measurement by systolic time intervals.

AUTOR(ES)

Lance, V Q

RESUMO

Ten healthy men, ages 22 to 35, were studied non-invasively standing (control), at the onset of squatting ('prompt squat'), and at two minutes of squatting. Squatting produced decreases in heart rate, isovolumic contraction time, pre-ejection period, and pulse transmission time from onset of depolarisation to the first heart sound, left ventricular ejection time, and the ejection time index. These results of systolic time intervals are consistent with the bradycardia and increased ventricular filling induced by squatting. Major changes from control measurements were found at the onset of squatting, showing the impact of prompt squat of left ventricular performance.

Documentos Relacionados

• Influence of profuse sweating on systolic time intervals.
• Electrical impedance cardiogram in derivation of systolic time intervals.
• Recovery from exercise at varying work loads. Time course of responses of heart rate and systolic intervals.
• Systolic time intervals in measurement of inotropic response to drugs.
• Estimation of the risk of death after acute myocardial infarction from systolic time intervals.