Effect of Endurance Exercise Training on Cardiac Function and Structure in Older Men
【Supercategory：7. DESCENTE SPORTS SCIENCE Subcategory：7.11 Vol.11】
It is known that endurance exercise training induce left ventricular (LV) structural and functional changes. But, there have been few reports regarding these changes in older athlete. So, we performed echocardiography in 4 groups : 11 older trained runners (OR ; age 65.1 ± 2.5 yrs, mean±SD), 15 young trained runners (YR ; 18.2 ± 0.4) and age-matched 10 older (OC ; 64.6 ± 4.2) and 18 young untrained men (YC ; 20.9 ± 1.3). All subjects had no evidence of hypertension and cardiovascular disease.
The trained runners had lower resting heart rate than the un-trained subjects in the older and young groups, respectively. In M-mode study, YR had increased LV end-diastolic diameter and muscle thickness. But, these changes were not observed in OR. Indexes of LV systolic function (shortning fraction and ejection fraction) were not different among the 4 groups.
The results of this study suggested that endurance exercise training could not induce LV structural changes in older subjects.
DESCENTE SPORTS SCIENCE Vol.11/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
The trained runners had lower resting heart rate than the un-trained subjects in the older and young groups, respectively. In M-mode study, YR had increased LV end-diastolic diameter and muscle thickness. But, these changes were not observed in OR. Indexes of LV systolic function (shortning fraction and ejection fraction) were not different among the 4 groups.
The results of this study suggested that endurance exercise training could not induce LV structural changes in older subjects.
DESCENTE SPORTS SCIENCE Vol.11/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
| Researcher | Shiro Matsuo*1, Mitsuru Higuchi*1, Nobuharu Akatsuka*2 |
|---|---|
| University or institution | *1 National Institute of Health and Nutrition Division of Health Promotion, *2 National Medical Center Hospital Division of Cardiology |
Keywords
cardiac function, endurance exercise training, older athlete, LV systolic function