Evaluation of Bilateral Asymmetry between Upper Limb Masses in Right-Handed Young Adults of Both Sexes

The study introduced a novel precise method for measurement and calculation of upper arm mass and to assess the difference between masses of upper limbs on the dominant and non-dominant sides of the body of right-handed participants. Forty healthy untrained male (n = 20; M age = 20.8yr., SD = 1.2) a...

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Bibliographic Details
Published in:Perceptual and motor skills 2015-06, Vol.120 (3), p.804-815
Main Authors: Gutnik, B., Skurvydas, A., Zuoza, A., Zuoziene, I., Mickevičnienė, D., Alekrinskis, A., Nash, D.
Format: Article
Language:English
Subjects:
Adult
Arm
Arms
Asymmetry
Biomechanical Phenomena
Female
Functional Laterality - physiology
Gender differences
Humans
Kinematics
Kinetics
Male
Regression analysis
Sex Factors
Young Adult
Young adults
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Summary:The study introduced a novel precise method for measurement and calculation of upper arm mass and to assess the difference between masses of upper limbs on the dominant and non-dominant sides of the body of right-handed participants. Forty healthy untrained male (n = 20; M age = 20.8yr., SD = 1.2) and female (n = 20; M age = 20.7 yr., SD = 1.3) participants without a history of upper-extremity pathology participated. Kinematic and kinetic data were collected during arm motion. The mass of each arm was calculated. Each participant performed 20 movements with each arm. Most often the dominant arm was more massive than the non-dominant in both sex groups; however, mass was more symmetric for female participants than for male participants. Regression equations related to total body mass were calculated for each arm independently.
ISSN:0031-5125
1558-688X
DOI:10.2466/25.10.PMS.120v16x3