Circannual changes in ventricular function assessed by echocardiography.
Cardiac function may vary predictably along the 1-year scale. A circannual rhythm, more or less in phase is documented for 5 echocardiographic variables in clinically healthy Japanese adults.
Saito
Y
Y
Yamanashi Medical College, Japan.
Tamura
K
K
Hillman
D C
DC
Cornélissen
G
G
Halberg
F
F
D000328:Adult; D004452:Echocardiography; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D010507:Periodicity; D012621:Seasons; D016276:Ventricular Function / Q000502:physiology*