UMD Theses and Dissertations
Permanent URI for this collectionhttp://hdl.handle.net/1903/3
New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a given thesis/dissertation in DRUM.
More information is available at Theses and Dissertations at University of Maryland Libraries.
Browse
2 results
Search Results
Item The Impact of Short-Term Sleep Extension on Cognitive and Motor Performance in College Tactical Athletes(2018) Ritland, Bradley Michael; Hatfield, Bradley D; Kinesiology; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)U.S. service members are commonly referred to as “tactical athletes” because of the physical training they undergo to maintain and improve occupational performance. Because performance in the military can literally determine the outcome in ‘life and death’ situations, it is critical that tactical athletes are prepared to perform optimally, both physically and mentally. Accordingly, it is important for tactical athletes to focus on health behaviors, like sleep, known to impact both aspects of performance. Little is known about the sleep health of college tactical athletes enrolled in The Reserve Officer's Training Corps (ROTC) and there have been no well-controlled studies on the immediate and residual effects of sleep extension on executive and cognitive motor performance. To address this knowledge gap, a randomized control trial (Sleep extension versus Control) was conducted to determine the immediate and residual effects of a four-night sleep extension intervention (10 hours time in bed) in this population. Consented participants wore a wrist actigraph for fifteen nights in order to measure sleep duration and a cognitive motor battery was conducted after seven nights of habitual sleep (Day 8 – pre-test), after the four nights of sleep extension intervention (Day 12 – post-test), and after the resumption of habitual sleep for four nights (Day 16 – follow-up). Between group comparisons of mean pre- to post-test score changes and mean pre-test to follow-up score changes were performed using independent sample t-tests. Results revealed that the sleep extension group significantly increased their mean sleep duration over the intervention period and that the four nights of sleep extension resulted in immediate benefits in alertness, psychomotor vigilance/attention, executive function performance, standing broad jump performance, and motivation levels. Benefits of sleep extension on broad jump performance and motivation level were still evident four days after resumption of habitual sleep schedules. These results suggest that sleep extension enhances both cognitive and motor performance in college tactical athletes, with some performance benefits lasting days after returning to habitual sleep patterns. Considering the performance improvements noted following sleep extension, a four-night intervention should be considered for training programs aiming to enhance overall performance.Item EXAMINING FACTORS ASSOCIATED WITH LEADERSHIP SELF-EFFICACY IN COLLEGE STUDENT MILITARY PROGRAMS(2009) Wilson, Wendy L; Kurotsuchi Inkelas, Karen; Counseling and Personnel Services; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)The current study examined the relationship between college experiences and socially responsible leadership with leadership self-efficacy for students who participate in military education programs. This study applied the social change model for leadership development, SCM, as the theoretical lens through which a socially responsible leadership process was understood in these programs. In addition, Astin's (1991) college impact model was applied to the design of the study in order to understand the relationship between involvement measures and leadership self-efficacy, an outcome of military education programs. This ex post facto study was a secondary analysis of data collected through the 2006 administration of the Multi-Institutional Study of Leadership (MSL). The MSL provided a national sample of 1413 students who indicated involvement in a military student group. These military education programs were defined broadly and included participation in Corps of Cadets and ROTC students. The findings of this study indicate significant differences between students who participate in military education programs and other college students in terms of leadership self-efficacy. Military students indicated greater efficacy for leadership even when differences in background were accounted for. Second, the values of socially responsible leadership and leadership self-efficacy were positively correlated for students who participate in military education programs. Finally, the conceptual model designed for this study to understand leadership self-efficacy for military students was able to explain 49% of the variance in the criterion variable. Several factors significantly contributed to leadership self-efficacy, including demographic characteristics, a leadership self-efficacy quasi-pre-test, academic classification, leadership experiences, and socially responsible leadership. The study provided support for leadership self-efficacy as an outcome for students who participate in military education programs, and the use of socially responsible leadership as a means to understand leadership self-efficacy for this population. The study also identified areas of the campus environment that might be incorporated and developed further within military education programs in order to take full advantage of the college environment.