Sex Differences in Electromechanical Delay during a Punch Movement

This study assessed how sex of participant is related to electromechanical delay during a karate punch. Ten male (M age = 25.00 yr., SD = 3.02; M height= 174.9 cm, SD = 6.3; M weight = 71.13 kg, SD = 9.35) and 8 female (M age = 27.4 yr., SD = 6.0; M height = 161.4 cm, SD = 5.1; M weight = 59.09 kg,...

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Bibliographic Details
Published in:Perceptual and motor skills 2012-08, Vol.115 (1), p.228-240
Main Authors: Ferreira, Mário A. Rodrigues, Vencesbrito, António M.
Format: Article
Language:English
Subjects:
Adult
Athletes
Athletes - psychology
Biomechanical Phenomena - physiology
Deltoid Muscle - physiology
Electromyography - instrumentation
Electromyography - methods
Exercise Test
Female
Gender differences
Humans
Kinematics
Male
Martial arts
Martial Arts - physiology
Motor ability
Movement
Movement - physiology
Muscle Contraction - physiology
Muscle, Skeletal - physiology
Sex Characteristics
Young Adult
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Summary:This study assessed how sex of participant is related to electromechanical delay during a karate punch. Ten male (M age = 25.00 yr., SD = 3.02; M height= 174.9 cm, SD = 6.3; M weight = 71.13 kg, SD = 9.35) and 8 female (M age = 27.4 yr., SD = 6.0; M height = 161.4 cm, SD = 5.1; M weight = 59.09 kg, SD = 7.00) karate athletes performed 10 ballistic punches to a target as hard as possible. Kinematic analysis and surface electromyographic (EMG) activity of the upper-limb muscles were recorded. Men had a significantly shorter electromechanical delay in the anterior portion of the deltoid, showing a larger effectiveness in the transfer of the contractile force for the beginning of movement. Agonist and antagonist relationships show intermuscular coordination differences between the sexes. Results revealed the existence of a different neuromuscular coordination pattern of motor control between men and women, although a similar kinematic pattern was expected due to karate practice.
ISSN:0031-5125
1558-688X
DOI:10.2466/25.06.26.PMS.115.4.228-240