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ID 17488
Eprint ID
17488
FullText URL
Thumnail 90_1407.pdf 2.53 MB
Title Alternative
Studies on mechanocardiogram I. Mechanocardiogram in normal subjects, using hand grip exercise
Author
Kawai, Tatsuya
Abstract
Normal 45 males and 25 females less than 40 years, and 30 male and 25 female more than 40 years of age, were analyzed for mechanocardiogram both at rest and by hand grip exercise. The results revealed that Q-ⅡA and LVET showed a significant negative correlation, PEP showed no or a little, correlation and Q-Ⅰ showed no correlation with heart rate. With different time constant, while the waveform did not change essentially waveform and a time lage on wave were observed, i.e., with time constant of 0.1 in comparison with 2.0sec., RF/E-0 ratio and RFT increased, and UT, Q-E, IRT and A/E-0 ratio tended to decrease. In terms of different positions, left hemilateral position as compared with supine one prolonged PEP in all groups and in the LVET at tachycardia and the Q-ⅡA at bradycardia, a difference by position was found in female. In the over 40 year old group, Q-ⅡA, LVET, PEP, PEP/LVET, A/E-0 ratio and IRT tended to increase as compared with the below 40 year old group. In female compared to male, examination at rest showed a tendency to have a greater Q-ⅡA and LVET, and lesser PEP, PEP/LVET, Q-Ⅰ, A/E-0 ratio and RFT. Hand grip exercise increased Q-ⅡA, LVET, PEP, ICT, PEP/LVET and A/E-0 ratio accompanied with an rise in blood pressure and heart rate.
Published Date
1978-12-30
Publication Title
岡山医学会雑誌
Publication Title Alternative
Journal of Okayama Medical Association
Volume
volume90
Issue
issue11-12
Publisher
岡山医学会
Publisher Alternative
Okayama Medical Association
Start Page
1407
End Page
1425
ISSN
0030-1558
NCID
AN00032489
Content Type
Journal Article
Official Url
https://www.jstage.jst.go.jp/article/joma1947/90/11-12/90_11-12_1407/_article/-char/ja/
Related Url
http://www.okayama-u.ac.jp/user/oma/index.html
language
日本語
Copyright Holders
岡山医学会
File Version
publisher
Refereed
True
Eprints Journal Name
joma