THREE DIMENSIONAL KINEMATIC DIFFERENCES BETWEEN MALE AND FEMALE SOCCER PLAYERS

This research describes a method of biomechanical analysis that allows for kinematic data to be captured in a game-like environment and key biomechanical differences between male and female soccer players to be identified. Male (n=3) players aged between 22 and 24 years and female players (n=3) aged between 19 and 23 years were recorded using a VICON motion capture system operating outdoors at an artificial grass venue. Biomechanical measurements of the lower limb such as inversion/eversion and flexion/extension of the ankle; the flexion/extension, varus/valgus and internal/external rotation of the knee; and the internal/external rotation and abduction/adduction of the hip, were recorded. Initial observations showed an increase in knee valgus and external tibial rotation in female players’ key activities performed during a soccer game

“TEARING UP THE TURF”: HOW NATURAL GRASS RESPONDS TO REPEATED TRACTIONAL TRIALS FOR SOCCER BOOT ANALYSIS

The shoe-surface interaction carries both performance and health-based implications for soccer players. As soccer is often played on natural grass surfaces, previous mechanical tests observing shoe-surface traction have examined the interaction on natural grass and reported averaged traction coefficient values. The aim for this study was to explore spatial changes within the playing surface, as well as examine if degradation over the testing period can alter these values. Through translational testing on a custom apparatus, this study showed that the average maximum traction coefficient on the same location of the playing surface was significantly lower than results reported at different locations (2.66 vs 3.05). The influence of the initial trial, however, was highlighted. Isolating and reporting this trial, as well the average result that excluded the first trial, presented traction data that accurately reflected the maximum traction of the playing surface as well as tractional changes over the entire trial

A comparison of the responses of UNI students direct from high school, fall semester 1979, and their parents to statements pertaining to selected educational and social issues

https://scholarworks.uni.edu/education_history/1008/thumbnail.jp

Student opinions and interests regarding a proposed Army Reserve Officer Training Corps (ROTC) at the University of Northern Iowa / Paul C. Kelso

https://scholarworks.uni.edu/education_history/1007/thumbnail.jp

Opinions of freshmen students enrolled at the University of Northern Iowa, spring semester 1983, who submitted declaration of curriculum (academic major) statements

https://scholarworks.uni.edu/education_history/1006/thumbnail.jp

THREE-DIMENSIONAL INVERSE DYNAMICS LINKED SEGMENT MODEL IN SWIMMING

This study aimed to produce a three-dimensional (3-D) inverse dynamics linked segment model capable of utilising kinematic data of a subject simulating front crawl to determine joint rotations and moments. This model is intended to address the current gap in swimming performance literature concerning the measurement of dynamic loads acting on an athlete during swimming. Joint moments derived from this model are to be used to specify actuator requirements for a biomimetic robotic system which will then be used to replicate human swimming techniqu

The effect of low‐temperature hydrothermal alteration on the remanent magnetization of synthetic titanomagnetites: A case for acquisition of chemical remanent magnetization

NSF grants EAR-8804853 and 8921622, and NASA grant NGT-5042

Alcohol Information Survey of Undergraduate Students Enrolled at the University of Northern Iowa, Spring Semester 1983

The purposes of the study were to (1) secure information from a sample of University of Northern Iowa students regarding their use of alcoholic beverages and their attitudes regarding themselves and others who had encountered problems related to alcohol usage, and (2) provide information to university students and staff members which may be utilized in developing programs related to alcohol use in the university community.https://scholarworks.uni.edu/education_history/1016/thumbnail.jp