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To calculate the local angular momentum contribution (HL) the angular momentum of the segment about an instantaneous axis of rotation perpendicular to the long axis of the segment was determined as:
Where [HL.sub.trsi] is the local angular momentum of segment v about its own transverse axis at the ith time percentile expressed in the external reference system; [I.sub.trs] is the moment of inertia of segment v about its transverse axis obtained from the e-Zone program (Deffeyes and Sanders, 2005) and [[omega].sub.si] is the angular velocity vector of segment s at the ith time percentile.
Reliability of three-dimensional angular kinematics and kinetics of swimming derived from digitized video
Where [HL.sub.trsi] is the local angular momentum of segment s about its own transverse axis at the ith time percentile expressed in the external reference system; [I.sub.trs] is the moment of inertia of segment s about its transverse axis obtained from the e-Zone program (Deffeyes and Sanders, 2005) and [[omega].sub.si] is the angular velocity vector of segment s at the ith time percentile.
An approach to identifying the effect of technique asymmetries on body alignment in swimming exemplified by a case study of a breaststroke swimmer
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