Physiological responses to prompt and sustained squatting. Measurement by systolic time intervals
| Autor: | David H. Spodick, V Q Lance |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
Adult
Male musculoskeletal diseases Bradycardia medicine.medical_specialty Physical Exertion Left Ventricular Ejection Time Squat Heart Rate Internal medicine Heart rate medicine Humans Ventricular Function business.industry musculoskeletal neural and ocular physiology Heart musculoskeletal system Physiological responses body regions Systolic time intervals Heart Function Tests Cardiology Squatting position medicine.symptom Cardiology and Cardiovascular Medicine Ventricular filling business human activities Research Article |
| Zdroj: | Heart. 39:559-562 |
| ISSN: | 1355-6037 |
| DOI: | 10.1136/hrt.39.5.559 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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