The effect of age, sex, speed, and practice on coincidence-anticipation (C/A) performance of elementary school children was investigated. 84 elementary school children, 7 boys and 7 girls at Ages 7, 8, 9, 10, 11, and 12 yr., served as subjects for the study. Subjects were given 24 C/A trials, 6 each at 4 speeds, randomly presented. Subjects were required to lift the foot off a spring switch in coincidence with the arrival of a ball at a target flag. A score was determined as the difference between actual time and the estimate as recorded on separate .01-sec. Lafayette timers. The data were analyzed employing a 6 by 2 by 4 by 3 factorial design. Results indicated that 7-yr.-olds performance was inferior to those of all other age groups, boys were more accurate than girls, and all groups exhibited improvement over practice.
The intent of this study was examination of effects of sex of subject, eye preference, and speed of stimulus on anticipation of coincidence. 15 men and 15 women made estimates of a baseball's arrival at the front edge of a home plate. Subjects had blocks of trials while standing with either the preferred or nonpreferred eye closest to the oncoming ball, followed by trials of the other eye closest. Balls were projected 45 ft. by a pitching machine at speeds of 35, 40, 45, and 50 mph. Analysis indicated no significant difference for sex or eye preference but a significant speed effect, with the slowest speed being less accurate.
This study investigated the effect of secondary school physical education on fitness load. Fitness load was defined as the product of the mean heart rate above threshold (144 bpm) and fitness time (the duration of the heart rate above threshold). The relationship of fitness load and skill level of students was also studied. Teachers of 24 classes classified students as having high, moderate, or low skill ability. Seventy-two students, 1 from each skill level in each class, wore heartwatches to record heart rate at 15-s intervals. Student behavior was videotaped and coded. Twenty-one percent of the classes produced an overload effect, and 79% did not. The highly and moderately skilled students achieved fitness load more frequently than their lower skilled colleagues. The relationship between fitness load and percentage of time exercising was r = .66, indicating 44% common variance.
10 adolescent baseball players and 10 nonplayers made estimates of baseballs' arrival at the front edge of a home plate. Balls were projected 45 ft. by a pitching machine at speeds of 35, 40, 45, and 50 mph. Subjects made estimates with the dominant and nondominant eye closest to the oncoming ball. Analysis indicated that players were no more accurate than nonplayers but did respond significantly earlier and with consistency. Eye dominance had no effect on performance.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.