This study investigated the influence of perceptual training on
volleyball serve-reception performance. The subjects were ten female high-school
volleyball players. Subjects were randomly assigned in equal
numbers to a control or an experimental group.
Both groups were tested on two occasions, prior to and following a
three-week perceptual training intervention....
In competitive swimming a spread in time of only 0.10,
and 0.16 seconds constituted the difference between
finishing second and seventh, and first and eighth,
respectively, in the women's 50 yard freestyle at the 1993
NCAA Division III National Swimming & Diving Championships.
Based on data collected over a period...
Although research evidence clearly indicates support surface properties are a major factor contributing to fall risk among the elderly, investigations examining the influence of variations in surface conditions on the postural control of older adults during task performance have been limited. Thus, the primary purpose of the present studies was...
This study investigated the relative effectiveness of
three instructional strategies on the learning of an overarm
throw among preadolescent females. Subjects were randomly
assigned to one of the following instructional strategies:
a correct model supplemented with verbal cues, a learning
model supplemented with verbal cues, and verbal cues only.
The...
For coaches to qualitatively analyze the performance of sport skills as executed by their
students, they must possess an internal image of the desired skill against which to make
comparisons (Hoffman, 1983; Pinheiro & Simon, 1992). Leas and Chi (1993) have
indicated that there are differences between novice and expert...
The type of plasminogen activator (PA) secreted by bovine embryos was identified. Day 12 to 14 blastocysts were collected at slaughter from estrous-synchronized, superovulated and naturally mated crossbred beef cows. Embryos were either left as intact embryos (E) or microdissected into component embryonic discs (ED) and trophoblastic vesicles (TV). Intact...
Oregon educational reform efforts are moving ahead with the support of legislation,
business and industry, and education. There has been little apparent consideration given to
the readiness of tenth graders to make career choices even though the research in the area of
career maturity indicates that students at this period...
Building upon Deci and Ryan's (1985, 1991) self-determination theory as well as
previous empirical work on motivation, the present study was designed to develop a
multifaceted 31-item Exercise Motivation Scale (EMS). A series of pilot studies were
first conducted in order to generate the 31 scale items. The EMS was...
This investigation examined the possible role of musculoskeletal forces in the
human walk-run transition. In order to measure these forces a treadmill was constructed
which allowed the measurement of vertical ground reaction forces while subjects walked
and ran at prescribed speeds. Validation proved the device to be accurate and reliable...