Accession Number : ADA366361


Title :   Kinematic and Kinetic Evaluation of High Speed Backward Running


Descriptive Note : Doctoral thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH


Personal Author(s) : Arata, Alan W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a366361.pdf


Report Date : 30 Jun 1999


Pagination or Media Count : 213


Abstract : The purpose of the study was to investigate the kinematic and kinetic parameters associated with high-speed backward running (BR). Thirty male subjects from two groups (15 Elite who used BR during athletic competition and 15 Athletic habitual runners) performed running trials for each of the following conditions: maximum velocity BR (BRmax), 80% of maximum BR, 60% of maximum BR, maximum velocity forward running and FR (FRmax) at a velocity equal to BRmax. Sagittal view high speed video (200 Hz) and force platform data (1000 Hz) were obtained and the following parameters were evaluated: stride length, stride frequency, intrinsic support length, stance time, trunk angle, hip, knee and ankle ranges of motion, hip, knee and ankle loading rate, resultant active peak, time to resultant active peak, initial anterior-posterior (A-P) peak, and final A-P braking force. Separate repeated measures ANOVAs were conducted to compare a) BR velocity conditions, b) equal efforts for BR and FR, and c) equal velocities for BR and FR.


Descriptors :   *EXERCISE(PHYSIOLOGY) , *JOINTS(ANATOMY) , *KINEMATICS , *MALES , *PERFORMANCE(HUMAN) , BIOMECHANICS , HIGH RATE , HUMAN BODY , KINETICS , LEGS , PHYSICAL FITNESS , THESES , VELOCITY , VIDEO SIGNALS


Subject Categories : Anatomy and Physiology
      Medicine and Medical Research


Distribution Statement : APPROVED FOR PUBLIC RELEASE