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Direct linkCallaway, Andrew J.; Cobb, Jon E. – Measurement in Physical Education and Exercise Science, 2012
Where as video cameras are a reliable and established technology for the measurement of kinematic parameters, accelerometers are increasingly being employed for this type of measurement due to their ease of use, performance, and comparatively low cost. However, the majority of accelerometer-based studies involve a single channel due to the…
Descriptors: Measurement Equipment, Motion, Athletics, Equipment Utilization
Stewart, Sean M. – European Journal of Physics, 2012
Motivated by quaint woodcut depictions often found in many late 16th and 17th century ballistic manuals of cannonballs fired in air, a comparison of their shapes with those calculated for the classic case of a projectile moving in a linear resisting medium is made. In considering the asymmetrical nature of such trajectories, the initial launch…
Descriptors: Comparative Analysis, Physics, History, Equations (Mathematics)
Harrison, Andrew J.; Jensen, Randall L.; Donoghue, Orna – Measurement in Physical Education and Exercise Science, 2005
The reliability of a laser system was compared with the reliability of a video-based kinematic analysis in measuring displacement and velocity during running. Validity and reliability of the laser on static measures was also assessed at distances between 10 m and 70 m by evaluating the coefficient of variation and intraclass correlation…
Descriptors: Physical Activities, Motion, Lasers, Video Technology
