Department of Exercise & Kinesiology

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Association of Obstructive Sleep Apnea Severity with Exercise Capacity and Health-related Quality of Life
(Wolters Kluwer, 2013) Butner, Katrina L.; Hargens, Trent A.; Kaleth, Anthony S.; Miller, Larry E.; Zedalis, Donald; Herbert, William G.; Exercise & Kinesiology, School of Health and Human Sciences
Background: Current research is inconclusive as to whether obstructive sleep apnea severity directly limits exercise capacity and lowers health-related quality of life (HRQoL). Aims: The aim of this study was to evaluate the association of obstructive sleep apnea severity with determinants of exercise capacity and HRQoL. Subjects and methods: Subjects were evaluated by home somnography and classified as no obstructive sleep apnea (n = 43) or as having mild (n = 27), moderate or severe obstructive sleep apnea (n = 21). Exercise capacity was assessed by a ramping cycle ergometer test, and HRQoL was assessed with the SF-36 questionnaire. Results: Greater obstructive sleep apnea severity was associated with older age, higher body weight, higher body mass index, lower peak aerobic capacity, a higher percentage of peak aerobic capacity at a submaximal exercise intensity of 55 watts, and lower physical component summary score from the SF-36. None of these variables were statistically different among obstructive sleep apnea severity groups after controlling for age and body weight. Obstructive sleep apnea severity was not associated with any cardiorespiratory fitness or HRQoL parameter. Conclusions: Obstructive sleep apnea severity has no independent association with exercise capacity or HRQoL.
Promoting Successful Aging through Competitive Sports Participation Insights from Older Adults
(2013-01) Heo, Jinmoo; Culp, Brian; Yamada, Naoko; Won, Youngshin
In this study we explored the experience of competing in the Senior Games and the resultant contributions to the successful aging of older adults. We used in-depth interviews with older adults who participated in the National Senior Games. Analysis of the data produced five central themes: (a) perseverance, (b) career development and significant effort, (c) personal and social benefits, (d) unique ethos, and (e) identification as a senior athlete. We found that participating in the Senior Games as a form of serious leisure enhanced the well-being of older adults and could be utilized as a means by which to maintain a healthy lifestyle.
The nociceptive withdrawal reflex does not adapt to joint position change and short-term motor practice
(Taylor & Francis, 2013-07-16) Eckert, Nathan; Riley, Zachary A.; Exercise & Kinesiology, School of Health and Human Sciences
The nociceptive withdrawal reflex is a protective mechanism to mediate interactions within a potentially dangerous environment. The reflex is formed by action-based sensory encoding during the early post-natal developmental period, and it is unknown if the protective motor function of the nociceptive withdrawal reflex in the human upper-limb is adaptable based on the configuration of the arm or if it can be modified by short-term practice of a similar or opposing motor action. In the present study, nociceptive withdrawal reflexes were evoked by a brief train of electrical stimuli applied to digit II, 1) in five different static arm positions and, 2) before and after motor practice that was opposite (EXT) or similar (FLEX) to the stereotyped withdrawal response, in 10 individuals. Withdrawal responses were quantified by the electromyography (EMG) reflex response in several upper limb muscles, and by the forces and moments recorded at the wrist. EMG onset latencies and response amplitudes were not significantly different across the arm positions or between the EXT and FLEX practice conditions, and the general direction of the withdrawal response was similar across arm positions. In addition, the force vectors were not different after practice in either the practice condition or between EXT and FLEX conditions. We conclude the withdrawal response is insensitive to changes in elbow or shoulder joint angles as well as remaining resistant to short-term adaptations from the practice of motor actions, resulting in a generalized limb withdrawal in each case. It is further hypothesized that the multisensory feedback is weighted differently in each arm position, but integrated to achieve a similar withdrawal response to safeguard against erroneous motor responses that could cause further harm. The results remain consistent with the concept that nociceptive withdrawal reflexes are shaped through long-term and not short-term action based sensory encoding.
Shoulder Pain, Functional Status, and Health-Related Quality of Life after Head and Neck Cancer Surgery
(2013-12) Wang, Hsiao-Lan; Keck, Juanita F.; Weaver, Michael T.; Mikesky, Alan; Bunnell, Karen; Buelow, Janice M; Rawl, Susan M.
Head and neck cancer (HNC) patients experience treatment-related complications that may interfere with health-related quality of life (HRQOL). The purpose of this study was to describe the symptom experience (shoulder pain) and functional status factors that are related to global and domain-specific HRQOL at one month after HNC surgery. In this exploratory study, we examined 29 patients. The outcome variables included global HRQOL as well as physical, functional, emotional, and social well-being. Symptom experience and functional status factors were the independent variables. In the symptom experience variables, shoulder pain distress was negatively associated with physical well-being (R2 = 0.24). Among the functional status variables, eating impairment was negatively related to global HRQOL (R2 = 0.18) and physical well-being (R2 = 0.21). Speaking impairment and impaired body image explained a large amount of the variance in functional well-being (R2 = 0.45). This study provided initial results regarding symptom experience and functional status factors related to poor HRQOL in the early postoperative period for HNC patients.
An Analysis of Future Coaches’ Emerging Dispositions on Social Justice: The Wooden Effect
(2014-02) Culp, Brian
This qualitative study explored the extent to which an archetype presented through a non-fiction text could impact aspiring coaches' (AC's) dispositions regarding social justice. Forty-three aspiring coaches at a Midwestern university enrolled in a foundations class that presented issues related to inequity were studied. Analysis of student journals indicated changes in AC's philosophies regarding social justice, an appreciation for the perspectives of underrepresented groups and emergent critical perspectives when examining sport processes. Results of the study imply that a focus on democratic education and constructivism in coaching preparation programs may be of benefit. A means by which praxis of this nature can be realized for future professionals is presented using Giddens' structuration theory.
Reliability of pain intensity clamping using response-dependent thermal stimulation in healthy volunteers
(Springer (Biomed Central Ltd.), 2015) Cruz-Almeida, Yenisel; Naugle, Kelly M.; Vierck, Charles J.; Fillingim, Roger B.; Riley, Joseph L.; Department of Kinesiology, School of Physical Education and Tourism Management
BACKGROUND: Pain intensity clamping uses the REsponse-Dependent Stimulation (REDSTIM) methodology to automatically adjust stimulus intensity to maintain a desired pain rating set-point which is continuously monitored from a subject's real-time pain ratings. REDSTIM blinds subjects regarding the pain intensity set-point, supporting its use for assessing intervention efficacy. By maintaining the pain intensity at a constant level, a potential decrease in pain sensitivity can be detected by an increase in thermode temperature (unknown to the subject) and not by pain ratings alone. Further, previously described sensitizing and desensitizing trends within REDSTIM provide a novel insight into human pain mechanisms overcoming limitations of conventional testing methods. The purpose of the present study was to assess the test-retest reliability of pain intensity clamping using REDSTIM during three separate sessions. METHODS: We used a method for testing changes in pain sensitivity of human subjects (REDSTIM) where the stimulus temperature is modulated to clamp pain intensity near a desired set-point. Temperature serves as the response variable and is used to infer pain sensitivity. Several measures were analyzed for reliability including average temperature and area under the curve (AUC). Intraclass correlation coefficients were calculated for each measure at pain rating set-points of 20/100 and 35/100. RESULTS: Sixteen healthy individuals (mean age = 21.6 ± 3.9) participated in three experiments two days apart at both pain rating set-points. Most reliability coefficients were in the moderate to substantial range (r's = 0.79 to 0.94) except for the negative AUC (r = 0.52), but only at the 20/100 pain rating set-point. CONCLUSIONS: The present study supports the test-retest reliability of pain intensity clamping using the REDSTIM methodology while providing a novel tool to examine human pain modulatory mechanisms and overcoming common shortcomings of conventional quantitative sensory testing methods.
Purposeful Pedaling: Analyzing MS 150 Participant Behavior
(Emerald, 2015) Gregg, Elizabeth A.; Pierce, David A.; Sweeney, Kristi M.; Lee, Jason W.; Department of Kinesiology, School of Physical Education and Tourism Management
Purpose – The purpose of this paper is to explore factors affecting participant awareness, attraction, and attachment to the National Multiple Sclerosis Society’s (NMSS) MS 150 PGA Tour Cycle to the Shore charitable bike ride utilizing the Psychological Continuum Model (PCM) developed by Funk and James. In addition, the authors sought to outline variables sport organizations can use to predict donor behavior. Design/methodology/approach – Data for this project were derived from an electronic survey distributed to race participants and was analyzed in SPSS® software. Regression analysis was employed. Findings – The findings support previous research employing the PCM; wherein social situational variables have the greatest influence on the relational significance of hedonic and dispositional needs in attraction and attachment to sporting events. The work supports the inclusion of communities as an additional attachment outcome. Practical implications – In all, 92 percent of riders were informed about the event through word of mouth (WOM) marketing, highlighting the importance this promotional technique in the awareness stage of the PCM. NMSS would be well served by capitalizing on the power of WOM. Originality/value – The research provides insight into predictors of fundraising efficacy. In terms of fundraising effectiveness, participants with four or more years of participation were six times more likely than first-year riders to raise $1,000 or more.
Weight loss attitudes and social forces in urban poor Black and White women
(Ingenta Connect, 2015-01) Keith, NiCole R.; Hemmerlein, Kimberly A.; Clark, Daniel O.; Department of Kinesiology, School of Physical Education and Tourism Management
OBJECTIVE: To explore differences between Blacks and Whites in perceived influences on weight-related behaviors among obese urban poor women. METHODS: Participants (N = 27) received physician referrals to a weight loss program located in Federally Qualified Health Centers and either never attended or stopped attending. We conducted in-depth, in home interviews using a script informed by focus groups, pilot discussions, and the theory of planned behavior (TPB) to learn about participants' weight loss attitudes, social forces and perceived behavioral control. RESULTS: White women reported having more social support and social pressure for weight management activities. Black women reported eating for positive reasons whereas white women associated eating with negative emotions. CONCLUSION: Social networks and emotions may be critical factors in weight management and lifestyle program participation.
Antioxidant vitamin C prevents decline in endothelial function during sitting
(International Scientific Information, 2015-04-07) Thosar, Saurabh S.; Bielko, Sylvanna L.; Wiggins, Chad S.; Klaunig, James E.; Mather, Kieren J.; Wallace, Janet P.; Department of Kinesiology, School of Physical Education and Tourism Management
BACKGROUND: This study was designed to test the hypothesis that antioxidant Vitamin C prevents the impairment of endothelial function during prolonged sitting. MATERIAL AND METHODS: Eleven men (24.2 ± 4.4 yrs) participated in 2 randomized 3-h sitting trials. In the sitting without vitamin C (SIT) and the sitting with vitamin C (VIT) trial, participants were seated for 3 h without moving their legs. Additionally, in the VIT trial, participants ingested 2 vitamin C tablets (1 g and 500 mg) at 30 min and 1 h 30 min, respectively. Superficial femoral artery (SFA) flow-mediated dilation (FMD) was measured hourly for 3 h. RESULTS: By a 1-way ANOVA, there was a significant decline in FMD during 3 h of SIT (p<0.001). Simultaneously, there was a significant decline in antegrade (p=0.04) and mean (0.037) shear rates. For the SIT and VIT trials by a 2-way (trial x time) repeated measures ANOVA, there was a significant interaction (p=0.001). Pairwise testing revealed significant between-SFA FMD in the SIT and VIT trial at each hour after baseline, showing that VIT prevented the decline in FMD 1 h (p=0.009), 2 h (p=0.016), and 3 h (p=0.004). There was no difference in the shear rates between SIT and VIT trials (p>0.05). CONCLUSIONS: Three hours of sitting resulted in impaired SFA FMD. Antioxidant Vitamin C prevented the decline in SFA FMD, suggesting that oxidative stress may contribute to the impairment in endothelial function during sitting.
Age-related differences in conditioned pain modulation of sensitizing and desensitizing trends during response dependent stimulation
(Elsevier, 2015-08) Naugle, Kelly M.; Cruz-Almeida, Yenisel; Vierck, Charles J.; Mauderli, Andre P.; Riley III, Joseph L.; Department of Kinesiology, School of Physical Education and Tourism Management
The current study evaluated age differences in conditioned pain modulation using a test stimulus that provided the opportunity to evaluate changes in heat pain sensitivity, sensitization, and desensitization within the same paradigm. During this psychophysical test, pain intensity clamping uses REsponse Dependent STIMulation (REDSTIM) methodology to automatically adjust stimulus intensity to maintain a desired pain rating set-point. Specifically, stimulus intensity increases until a pre-defined pain rating (the setpoint) is exceeded, and then decreases until pain ratings fall below the setpoint, with continued increases and decreases dictated by ratings. The subjects are blinded in terms of the setpoint and stimulus intensities. Younger and older subjects completed two test sessions of two REDSTIM trials, with presentation of conditioning cold stimulation between the trials of one session but not the other. The results indicated that conditioning cold stimulation similarly decreased the overall sensitivity of younger and older subjects, as measured by the average temperature that maintained a setpoint rating of 20 (on a scale of 0-100). The conditioning stimulus also significantly enhanced sensitization following ascending stimulus progressions and desensitization following descending stimulus progressions in older subjects relative to younger subjects. Thus, older subjects experienced greater swings in sensitivity in response to varying levels of painful stimulation. These results are discussed in terms of control over pain intensity by descending central modulatory systems. These findings potentially shed new light on the central control over descending inhibition and facilitation of pain.

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