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This study examined the effects of practice schedule manipulations implemented in an instructional setting on the performance and learning of low- and high-skilled students. College undergraduates (N = 83) enrolled in 5 tennis classes completed a pretest on the forehand and backhand ground strokes, practiced these skills under a blocked or alternating(More)
The gastrocnemius has been viewed as an important contributor at the knee joint as a joint flexor and stabilizer across all the knee and ankle joint angles. The purpose of this study was to investigate the influence of knee and ankle joint angles on the knee flexor function of the gastrocnemius. Seventeen participants were tested on a Biodex dynamometer(More)
This experiment investigated the effects of observing a learning model and receiving augmented verbal feedback on the acquisition and retention of the tennis volley. Female undergraduate students were randomly assigned to four groups: (a) AFB--received augmented verbal feedback from an instructor, (b) LMFB--monitored a learning model's trials and feedback,(More)
The biceps brachii is a bi-articular muscle affecting motion at the shoulder and elbow. While its' action at the elbow is well documented, its role in shoulder elevation is less clear. Therefore, the purpose of this project was to investigate the influence of shoulder and elbow joint angles on the shoulder elevation function of the biceps brachii. Twelve(More)
The triceps brachii (TB), the sole muscle of the posterior humerus, acts an extensor of the elbow and shoulder. As a biarticular muscle, the angles of the elbow and shoulder influence its' ability to generate joint moments. The purpose of this study was to investigate the influence of elbow and shoulder joint angles on the shoulder extension function of the(More)
Personally sized inductance loops (mini-loops) now are available for use with an FM classroom amplification system and the student's personal ear-level hearing aid. Frequency response characteristics of five commercially-available hearing aids were assessed 1) using hearing aid test equipment available in most audiology clinics, with the hearing aid on(More)
BACKGROUND The gastrocnemius (GA) is the lone bi-articular muscle of the leg, crossing both the knee and ankle. As with any bi-articular muscle, both joints affect its length/tension curve. The role of the GA as a plantarflexor is firmly established; however, no current research has investigated how changes in knee and ankle joint positions on its ability(More)
The extremities of the human body contain several bi-articular muscles. The actions produced by muscles at the joints they cross are greatly influenced by joint moment arms and muscle length. These factors are dynamic and subject to change as joint angles are altered. Therefore, to more completely understand the actions of such muscles, the angles of both(More)
ii ACKNOWLEDGMENTS First, I would like to thank GOD, without him none of this would be possible. I would like to thank Dr. Li Li for allowing me to study at LSU. I have been fortunate to have you as the chair of my dissertation committee and as my advisor. You have played an integral role in achieving my goal of becoming a sports scientist. Your dedication(More)
Acknowledgments There are many people that have helped, guided, encouraged, supported, and inspired me in this endeavor. It took me a long time to complete this goal, and without the following people, it would not have been possible. there for me when I was struggling to finish and encouraged me to persevere when I was tempted to quit. Even though they(More)