Relationship of Passive Hip Range of Motion to Countermovement Jump Height and Peak Power Output in Young Adults

Purpose: The purpose of this study was to examine passive hip range of motion (ROM) and how it relates to countermovement jump height (CMJH) and peak power output (PPO). Methods: Twenty subjects (10 males, 10 females), 19-31 years of age (23.5 ± 3.0) participated in this study. Height (170.3 ±6.9 cm), weight (65.8 ±10.5 kg) and body fat (15.6 ±6.9 , BodPod) were measured. Males with body fat greater than 17.5 and females greater than 27.5 were excluded from the study since jumping ability is limited by body fat. Power athletes were excluded from the study due to their likely jump training. Four passive hip ROMs were measured: flexion, extension, internal rotation (IR) and external rotation (ER). CMJH was measured using a Vertec vertical jump system. PPO was calculated using the Harman equation and then normalized for lean body mass (LBM). Subjects were categorized into groups for low, average and high ROM those within one standard deviation (SD) of the mean were categorized into the average group those below one SD of the mean were categorized into the low group those above one SD of the mean were categorized into the high group. A Pearson correlation was used to determine the relationship between CMJH and PPO to hip ROMs. A one-way ANOVA was used to compare low, average and high ROM groups for CMJH and PPO. Results: There were significant (p \u3c 0.05) negative correlations between hip flexion, extension and IR with CMJH (r = -0.67, -0.71, -0.64 respectively). While hip ER did not relate significantly (p \u3e 0.05) to CMJH (r = 0.33), there was a significant relationship (p \u3c0.05) with PPO (r = 0.52). There were no significant (p \u3e 0.05) differences in CMJH and PPO when low, average and high ROM groups were compared. Conclusion: Hip extension was associated with higher CMJH, while hip flexion and internal rotation associated with lower CMJH. Only hip external rotation correlated with PPO with a greater ROM associated with greater PPO. There is, however, no optimal ROM that relates t

TECHNICAL EVALUATION REPORT EMERGENCY DIESEL GENERATOR TECHNICAL SPECIFICATIONS STUDY RESULTS

The purpose of this report is to review technical specifications for emergency diesel generators in the context of new information developed in the Nuclear Plant Aging Research Program and the application of current NRC regulatory concepts and knowledge. Aging and reliability relationships related to the standard technical specifications are reviewed and supported by data and published information to ensure that conservative and beneficial specifications are identified. Where technical specifications could adversely influence aging and reliability, the technical issues and reasonable alternatives are identified for consideration. This report documents and spans the technical progress from the published and approved regulatory documents to the current knowledge basis. This ensures that the technical bases for the technical specifications discussed are documented and relatively complete subject information is contained in one document. The Pacific Northwest Laboratory (PNL) has participated in the Nuclear Plant Aging Research (NPAR) Program directed by the Nuclear Regulatory Commission's (NRC) Office of Nuclear Regulatory Research, Division of Engineering. The NPAR study of emergency diesel generator aging was performed in two phases. In Phase I, plant operating experience, ~ata, expert opinion and statistical methods were used to produce a new data base related to aging, reliability, and operational readiness of nuclear service diesel generators. Phase II was chiefly concerned with aging mitigation measures

Community-oriented development : the integration of design leadership and community design for urban synergy

The majority of people encounter a built environment that is influenced by a linear development model that prioritizes economic profitability over holistic sustainability, which includes community vitality, economic feasibility, and environmental sensitivity. Recognizing the shortfall of this convention, we propose to merge development and community design into a hybridized model of community-oriented development in an effort to reintroduce design, story, symphony, empathy, play and meaning into the modern lifestyle (Pink, 65-66). This study consists of two phases. In the first phase, we evaluate existing models of development and identify key design principles of community-oriented development. The sources for these principles and practices derive from a review of relevant literature, extensive field study, and interviews with key designers, administrators, and community members. This phase also examines and evaluates the effectiveness of community-oriented development principles in select precedent projects and explores how this alternative model is better suited to address certain urban design opportunities. In the second phase, we apply the design principles and guidelines to the city of Indianapolis and demonstrate how a particular site within the city can serve as a catalyst for influencing fellowship towards a holistic and sustainable model of living. This phase involves selecting a site, analyzing the physical, cultural and economic context, and developing a pilot study to test the feasibility of a community-oriented development. The final project attempts to improve community health through social, cultural and financial empowerment.Department of Landscape ArchitectureThesis (M.L.A.