Eccentric muscle performance of elbow and knee muscle groups in untrained men and women

Maximal voluntary eccentric (ECC) and concentric (CON) capacity of knee and elbow muscle groups was investigated in healthy untrained men (N = 40) and women (N = 50), 21-67 yr of age. Purposes of the study were to describe torque-velocity and ECC-CON relationships, and to compare these relationships...

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Bibliographic Details
Published in:Medicine and science in sports and exercise 1993-08, Vol.25 (8), p.936-944
Main Authors: GRIFFIN, J. W, TOOMS, R. E, VANDER ZWAAG, R, BERTORINI, T. E, O'TOOLE, M. L
Format: Article
Language:English
Subjects:
Adult
Aged
Biological and medical sciences
Elbow - physiology
Female
Fundamental and applied biological sciences. Psychology
Humans
Knee - physiology
Male
Middle Aged
Movement
Muscle Contraction - physiology
Muscles - physiology
Physical Exertion - physiology
Rotation
Sex Factors
Space life sciences
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
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Summary:Maximal voluntary eccentric (ECC) and concentric (CON) capacity of knee and elbow muscle groups was investigated in healthy untrained men (N = 40) and women (N = 50), 21-67 yr of age. Purposes of the study were to describe torque-velocity and ECC-CON relationships, and to compare these relationships among muscle groups and between genders. Average torque was measured at angular velocities of 30 degrees and 120 degrees.s-1 from knee flexor (KF), knee extensor (KE), and elbow flexor (EF) muscle groups unilaterally, using an isokinetic protocol including gravity compensation. Data were analyzed using ANOVA procedures, and a significance level of 0.01 was used for all hypothesis testing. Torque-velocity relationships were similar for each muscle group and gender; i.e., ECC average torque did not change as a function of velocity and CONC torque decreased as angular velocity increased. Women generated greater ECC relative to CONC torque than men in upper and lower extremity muscle groups. Muscle groups differed in ECC relative to CONC capacity in both men and women, with ECC/CONC ratios being greater for KE and EF than KF. In all muscle groups, the magnitude of ECC-CONC differences increased as angular velocity increased. Genders differed in relative strength balance between muscle groups, with men exhibiting greater KF/KE and EF/KF torque ratios than women for both ECC and CONC actions. Results of this study contribute to the body of women.
ISSN:0195-9131
1530-0315
DOI:10.1249/00005768-199308000-00009