A consideration of joint angles and joint angle variability of the upper limb in the female overarm lacrosse shot

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Author
Miles, Joanna
Date
2014Type
Thesis
Publisher
Cardiff Metropolitan University
Metadata
Show full item recordAbstract
Very little research so far has considered the biomechanics involved in the sport of
women’s lacrosse. Within this study, the basic biomechanical elements occurring in the
upper limb during a lacrosse shot were examined and considered in relation to participant
playing level. Five female participants undertook a series of lacrosse shots with three
different sticks, two straight and one offset. Motion data was collected using CODA
(frequency: 100Hz) and video capture in order to calculate joint angle and joint angle
variability data. Joint speeds increased in a proximal to distal pattern across segments in
all participants, suggesting a basic coordination pattern is present throughout the lacrosse
shot. Elite players showed reduced variability in joint angles at the ball release point
towards the end segments of the movement whilst novice players recorded higher levels of
variability of release point joint angles throughout all segments. However, both groups
showed an overall reduction in variability in joint angles at release as segments become
more distal. Ball release times were consistently maintained across all three sticks with the
most experienced participant showing the earliest ball release times. The offset stick
caused a statistically significant reduction in stick release angle variability when compared
to the other sticks. In conclusion, none of the theories surrounding variability are
exclusively conclusive as to how variability changes with playing level. Instead, aspects of
each are required to work in unison to create the pattern of variability shown.
Description
DEGREE OF BACHELOR OF SCIENCE (HONOURS)
INTERCALATED SPORT AND EXERCISE SCIENCE
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