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TROJAN LIFETIME CHAMPIONS:
A CROSS-SECTIONAL EPIDEMIOLOGICAL STUDY OF
LIFETIME HEALTH, WELLNESS, AND EXERCISE IN
ELITE INTERCOLLEGIATE STUDENT-ATHLETES
by
Shawn Christopher Sorenson
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(BIOKINESIOLOGY)
May 2012
Copyright 2012 Shawn Christopher Sorenson
Object Description
| Title | Trojan lifetime champions: a cross-sectional epidemiological study of lifetime health, wellness, and exercise in elite intercollegiate student-athletes |
| Author | Sorenson, Shawn Christopher |
| Author email | sorenson@usc.edu;sorenson@alumni.rice.edu |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Biokinesiology |
| School | School of Dentistry |
| Date defended/completed | 2012-03-02 |
| Date submitted | 2012-04-11 |
| Date approved | 2012-04-11 |
| Restricted until | 2012-04-11 |
| Date published | 2012-04-11 |
| Advisor (committee chair) | Salem, George J. |
| Advisor (committee member) |
Schroeder, E. Todd Azen, Stanley P. Gordon, James G. Martin, Brandon E. |
| Abstract | The lifespan health of elite, competitive athletes has received increasing attention in recent years, becoming a focal point of public discourse, legal action, and health-related policy. However, supporting scientific data are sparse and fail to reflect the diversity of today’s athletes, especially the participation of women. A comprehensive, descriptive understanding of modern competitive sports’ influence on lifetime health and well-being is absent. Investigations reflecting progressive health science and evidence-based medicine, oriented toward the practical translatability and clinical impact of research findings, and embracing a holistic model of physical, mental, social, and psychological health, are needed. ❧ National Collegiate Athletic Association (NCAA) intercollegiate sports comprise one of the most diverse and rapidly growing populations of modern athletes. No study to date has examined lifespan health and exercise outcomes in this group. Therefore, this dissertation evaluated holistic health, exercise, and health-related quality-of-life (HRQL) among current and alumni NCAA student-athletes (SA), alongside an age- and gender- matched control group of non-athletes (NA). ❧ 496 participants (aged 17-84 years) completed a novel health and exercise questionnaire (the TLC Survey). A robust validation of the survey's psychometric properties was conducted, including test-retest reliability, concurrent validity (i.e. equivalence) between paper and electronic forms, and evaluation of error magnitudes in relation to clinically relevant thresholds. Age-stratified, cross-sectional analyses were conducted to evaluate lifespan health and exercise outcomes. ❧ The TLC Survey demonstrated strong evidence of content, criterion, and convergent validity, feasibility, and test-retest reliability. Typical error was significantly less than thresholds of clinical interest, and there was minimal evidence of systematic test-retest error. SA demonstrated a substantially higher risk of joint health concerns later in life, comparable cardiopulmonary health, and differences in lifespan psychosocial health and HRQL profiles compared to NA. A relative parity of joint, cardiopulmonary, and psychosocial health concerns was observed. While current SA were more interested and involved in exercise than their peers, alumni SA and NA displayed similar exercise outcomes. Compliance with American College of Sports Medicine exercise guidelines was associated with significant attenuation of age-dependent cardiopulmonary health concerns, independent of intercollegiate athletic participation. ❧ These findings were robust, using both traditional statistical methods and magnitude-based inferences of clinical effect. They are distinct from those of earlier investigations, and suggest important differences in the experience of modern athletes compared to previous generations. They provide timely scientific evidence on a compelling public issue, and have important implications for health care, policy, and education. Future, larger-scale studies should enhance generalizability among diverse populations, explore sport-specific effects, inform targeted mechanistic research, and further direct related interventions that promote lifetime health and well-being among elite, competitive athletes. |
| Keyword | athletes; exercise; health; quality of life; questionnaires; reproducibility of results; cardiopulmonary; NCAA; validity; reliability; joints; psychosocial; holistic |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Contributing entity | University of Southern California |
| Rights | Sorenson, Shawn Christopher |
| Physical access | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@lib.usc.edu |
| Archival file | uscthesesreloadpub_Volume3/etd-SorensonSh-591.pdf |
Description
| Title | Page 1 |
| Contributing entity | University of Southern California |
| Repository email | cisadmin@lib.usc.edu |
| Full text | TROJAN LIFETIME CHAMPIONS: A CROSS-SECTIONAL EPIDEMIOLOGICAL STUDY OF LIFETIME HEALTH, WELLNESS, AND EXERCISE IN ELITE INTERCOLLEGIATE STUDENT-ATHLETES by Shawn Christopher Sorenson A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (BIOKINESIOLOGY) May 2012 Copyright 2012 Shawn Christopher Sorenson |
