THE EFFECT OF STEP WIDTH ON MUSCLE CONTRIBUTIONS TO BODY MASS CENTER ACCELERATION DURING THE FIRST STANCE OF SPRINTING

The Effect of Step Width on Muscle Contributions to Body Mass Center Acceleration During the First Stance of Sprinting

BackgroundAt the beginning of a sprint, the acceleration of the body center of mass (COM) is driven mostly forward and vertically in order to move from an initial crouched position to a more forward-leaning position.Individual muscle contributions to COM accelerations have not been previously studied in a sprint with induced acceleration analysis,

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Sexual Transmission of Hepatitis B virus: Epidemiological Considerations and Implications for Control with Vaccine

Prior to the acquired immune deficiency syndrome (AIDS) epidemic, more than 50% Generator W/ Plastic Battery Bracket of the new hepatitis B virus infections in the United States and Canada were sexually transmitted, approximately one-quarter by heterosexual men and women and one-third by homosexual men.The percentage of hepatitis B virus infections

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