| （1.School of Physical Education，Soochow University，Suzhou 215021，China；2.School of Physical Education，Changzhou University，Changzhou 213164，China；3.Nanjing Out-patient Department of Yi-Ke Clinic Medical Chain，Vascular Surgery，Nanjing 210014，China；4.Lab of Cardiovascular and Exercise，Department of Sport Science，College of Natural Science，Chungnam National University，Daejeon 305-764，Korea) Abstract: In order to study the effects of vibration training on the elasticity of arterial blood vessels of the younger elderly, the authors selected 50 males and 45 females ages 60-65 as the testees from healthy volunteers, randomly di-vided them into 4 experiment groups according to genders and vibration frequencies, executed a 24-week vibration power training plan, measured their blood pressure, carotid blood vessel elasticity indexes AC (arterial compliance) and β (stiffness) 3 times a week, examined the differences between experiment data of various groups by means of three-factor repetitive measurement variance analysis and post hoc multiple comparison verification, and revealed the following findings: 1) after high frequency vibration, the testees’ AC decreased somewhat as compared with that before training (P<0.05), the decrease amplitudes had a significant difference in segments S4-S6 (P<0.05), and the males’ de-crease amplitude was greater than the females’ (P<0.05); their β increased somewhat as compared with that before training (P<0.05), the increase amplitudes had a significantly difference in segments S4-S6 (P<0.05), and the males’ increase amplitude was greater than the females’ (P<0.05); 2) after low frequency vibration, the testees’ AC increased somewhat as compared with that before training (P<0.05), their β decreased somewhat as compared with that before training (P<0.05), there was no significant difference between the changing amplitudes of the two indexes in various time segments (P>0.05). The said findings indicate the followings: long term high frequency vibration training may de-crease the elasticity of arterial blood vessels of the younger elderly, and males have a higher tendency of such decreas-ing than females; while long term low frequency vibration training has a certain degree of positive effect on the elastic-ity of arterial blood vessels of the younger elderly, which shows no significant gender difference.
Key words: sports medicine；carotid；blood vessel elasticity；the younger elderly；vibration training；vibration frequency；blood vessel stiffness |
