Biomaterial Database

Exercise effect on the circadian rhythm of left ventricular systole in healthy men with higher and lower physical fitness. 1982

A Janiak, and J Kedziora

The purpose of the present work was to investigate the effect of exercise on the diurnal changes of electromechanical systolic time (QS2) in healthy men with different physical fitness (N = 20, PWC150-804.3 +/- 114.6 kpm/min), and with higher (N = 12, PWC150-881.3 +/- 71.8 kpm/min) and lower (N = 8, PWC150-688.8 +/- 46.0 kpm/min) physical fitness. The study on 20 male volunteers aged 19-21 at 6 times of 24-hours period in intervals (4-hours) was performed. The policardiograms according to Blumberger at rest and after 10 minutes of exercise were obtained. The individual level of exercise at test PWC150 was determined. The values of QS2 from policardiograms according to Weissler's method were read and for heart rate were corrected. The mathematical analysis by the method of Halberg was made. It was found that in healthy men at rest the circadian rhythm of QS2 existed. The effect of exercise on the circadian rhythm of QS2 was dependent on level of physical fitness. After exercise in human with higher physical fitness the circadian rhythm of QS2 was presented, whereas in human with lower physical fitness it was not evident.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009200	Myocardial Contraction	Contractile activity of the MYOCARDIUM.	Heart Contractility,Inotropism, Cardiac,Cardiac Inotropism,Cardiac Inotropisms,Contractilities, Heart,Contractility, Heart,Contraction, Myocardial,Contractions, Myocardial,Heart Contractilities,Inotropisms, Cardiac,Myocardial Contractions
D010809	Physical Fitness	The ability to carry out daily tasks and perform physical activities in a highly functional state, often as a result of physical conditioning.	Fitness, Physical
D002940	Circadian Rhythm	The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs or environmental and physiological stimuli.	Diurnal Rhythm,Nyctohemeral Rhythm,Twenty-Four Hour Rhythm,Nycthemeral Rhythm,Circadian Rhythms,Diurnal Rhythms,Nycthemeral Rhythms,Nyctohemeral Rhythms,Rhythm, Circadian,Rhythm, Diurnal,Rhythm, Nycthemeral,Rhythm, Nyctohemeral,Rhythm, Twenty-Four Hour,Rhythms, Circadian,Rhythms, Diurnal,Rhythms, Nycthemeral,Rhythms, Nyctohemeral,Rhythms, Twenty-Four Hour,Twenty Four Hour Rhythm,Twenty-Four Hour Rhythms
D005082	Physical Exertion	Expenditure of energy during PHYSICAL ACTIVITY. Intensity of exertion may be measured by rate of OXYGEN CONSUMPTION; HEAT produced, or HEART RATE. Perceived exertion, a psychological measure of exertion, is included.	Physical Effort,Effort, Physical,Efforts, Physical,Exertion, Physical,Exertions, Physical,Physical Efforts,Physical Exertions
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D013599	Systole	Period of contraction of the HEART, especially of the HEART VENTRICLES.	Systolic Time Interval,Interval, Systolic Time,Intervals, Systolic Time,Systoles,Systolic Time Intervals,Time Interval, Systolic,Time Intervals, Systolic
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor
D016276	Ventricular Function	The hemodynamic and electrophysiological action of the HEART VENTRICLES.	Function, Ventricular,Functions, Ventricular,Ventricular Functions