Education Commons^™

Biomechanical Analysis Of The Volleyball Overhand Floater Serve, Jian Lu

Masters Theses

The purpose of this study was to investigate biomechanical factors associated with successful overhand floater serves. Specifically, the study investigated the kinematics of the server at ball-hand contact. Six subjects performed floater serves for this investigation. Subjects served three trials under each of the following conditions: (a) short and long serves and (b) three ball-valve positions at ball-hand contact. Threedimensional cinematographic methods were used to obtain the data. Descriptive statistics were utilized to compare floater and nonfloater serves with respect to distance and ball-valve position. The results showed that (a) more long serves were classified as floater compared to short …

Kinematic Analysis Of Sprinting With And Without The Speed Chute, Douglas Roy West

Masters Theses

The problem under investigation was to determine if kinematic differences existed when sprinting with and without the speed chute. Eight Western Michigan University Track and Field Athletes were filmed at 100 frames per second as they sprinted two trials with and without the speed chute.

Three ANOVAs and descriptive statistics were used to evaluate the effects of sprinting with and without the speed chute. Descriptive statistics provided information for numerous dependent variables. Although statistically significant differences (R < .05) existed between sprinting with and without the speed chute, those differences may not be practical for the coach to use in terms of evaluation of sprinting technique, because the differences would be difficult for the human eye to see. Therefore, the speed chute may be a viable training tool as kinematics were only minimally affected.

Investigation Of Past Performance And Sources Of Motivation On Team And Self-Efficacy Of Collegiate Soccer Players, Kevin P. Demers

Masters Theses

This study investigated the relationship between past performance and sources of motivation on team and self-efficacy of collegiate soccer players. The subjects of this study were 92 male collegiate soccer players who participated in MIAA competition in the fall of 1992. Data were collected from team and self-efficacy questionnaires modified for this study. A sport motivation scale from Butt's (1987) Sport Protocol was also used to collect data. The findings of this study indicated that (a) past performance is the primary variable in predicting team efficacy; (b) the coach's rating of player ability was a stronger source of self-efficacy than …