Premium
Cardiovascular responses induced during high‐intensity eccentric and concentric isokinetic muscle contraction in healthy young adults
Author(s) -
Okamoto Takanobu,
Masuhara Mitsuhiko,
Ikuta Komei
Publication year - 2006
Publication title -
clinical physiology and functional imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.608
H-Index - 67
eISSN - 1475-097X
pISSN - 1475-0961
DOI - 10.1111/j.1475-097x.2005.00651.x
Subject(s) - medicine , concentric , eccentric , blood pressure , cardiology , heart rate , contraction (grammar) , intensity (physics) , diastole , mean arterial pressure , rate pressure product , physics , geometry , mathematics , quantum mechanics
Summary The purpose of this study was to determine the differences in cardiovascular response between high‐intensity eccentric (ECC) and concentric (CON) contractions, and to obtain the basic data applicable to resistance training in middle‐aged and elderly individuals. The subjects who participated in this study were nine healthy men (age 24·1 ± 1·3 years). ECC and CON were randomly selected, as each test consisted of a high‐intensity (80% of peak torque) bout of 60 s of ECC and CON isokinetic contractions of the flexor carpi radialis. Systolic pressure (SBP), diastolic pressure (DBP) and heart rate (HR) during ECC and CON were measured using a Finometer. Mean arterial pressure (MAP) was calculated by SBP and DBP. Rate‐pressure product (RPP) was calculated by SBP and HR. SBP, DBP, MAP and RPP during ECC were significantly smaller compared with CON. It is clear that cardiovascular response by high‐intensity contraction is smaller in ECC than in CON. High‐intensity ECC has been suggested to exert only small stress to the cardiovascular system. Thus, being a contraction mode it may be applicable to resistance training.