Browsing by Author "Warden, Stuart"

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    Full-text publication of abstract-presented work in sport and exercise psychology
    (BMJ Publishing Group, 2018-03-28) Shue, Sarah; Warden, Stuart; Health Sciences, School of Health and Rehabilitation Sciences
    Objectives: Meetings promote information sharing, but do not enable full dissemination of details. A systematic search was conducted for abstracts presented at the 2010 and 2011 Association of Applied Sport Psychology Annual Conferences to determine the full-text dissemination rate of work presented in abstract form and investigate factors influencing this rate. Methods: Systematic searches were sequentially conducted to determine whether the abstract-presented work had been published in full-text format in the 5 years following presentation. If a potential full-text publication was identified, information from the conference abstract (eg, results, number of participants in the sample(s), measurement tools used and so on) was compared with the full text to ensure the two entities represented the same body of work. Abstract factors of interest were assessed using logistic regression. Results: Ninety-four out of 423 presented abstracts (22.2%) were published in full text. Odds of full-text publication increased if the abstract was from an international institution, presented in certain conference sections or presented as a lecture. Conclusion: Those attending professional conferences should be cautious when translating data presented at conferences into their applied work because of the low rate of peer-reviewed and full-text publication of the information.
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    Intervention Effects on Musculoskeletal Health and Physical Function in CKD-MBD Using a Rat Model
    (2024-12) Troutman, Ashley Danielle; Avin, Keith; Warden, Stuart; Loghmani, Terry; Schulte, Michael
    Chronic kidney disease (CKD) is a systemic condition that affects approximately 14% of adults in the United States. Kidney damage disrupts biochemical concentrations which can lead to a condition known as CKD-mineral bone disorder (CKD-MBD). CKD-MBD consists of altered biochemistries, vascular calcification, and bone abnormalities. Skeletal muscle impairments have also been observed in those with CKD. Bone abnormalities lead to an increased risk of fracture that is 2-100 times higher in the CKD population than the non-CKD population. In CKD, muscular atrophy in combination with muscle weakness and/or poor physical function (i.e., sarcopenia) occurs in 4-63% of patients while muscular weakness alone (i.e., dynapenia) has a prevalence of 18-46%. The collective musculoskeletal impairments lead to a reduction in physical function, increased risk of hospitalization, and increased mortality. Exercise is commonly used to treat impaired bone and skeletal muscle in non-CKD populations. However, in CKD, exercise has demonstrated inconsistent results which are likely due to the varying exercise prescriptions reported in the literature. Additionally, the prescription of exercise necessary to cause musculoskeletal adaptation may be too intense for CKD patients in the mid-to-late stages of disease, especially since many were sedentary prior to diagnosis. This suggests that exercise alone may not be sufficient to elicit the desired muscle and bone outcomes. The use of nutraceuticals such as carnitine and pharmaceuticals that act as “exercise mimetics” are becoming more popular, however their impact on musculoskeletal health in CKD has not been extensively researched.
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    Kinematic changes following robotic-assisted upper extremity rehabilitation in children with hemiplegia : dosage effects on movement time
    (2018-04-30) Cardinal, Ryan Edward; Altenburger, Peter; Fuchs, Robyn; Massie, Crystal; Warden, Stuart
    Background: Rehabilitation Robotics (RR) has become a more widely used and better understood treatment intervention and research tool in the last 15 years. Traditional research involves pre and post-test outcomes, making it difficult to analyze changes in behavior during the treatment process. Harnessing kinematics captured throughout each treatment allows motor learning to be quantified and questions of application and dosing to be answered. Objective: The aims of this secondary analysis were: (i) to investigate the impact of treatment presentation during RR on upper extremity movement time (mt) in children with hemiplegic cerebral palsy (CP) and (ii) to investigate the impact of training structure (dose and intensity) on mt in children with CP participating in RR. Methods: Subjects completed 16 intervention sessions of RR (2 x week; 8 weeks) with a total of 1,024 repetitions of movement per session and three assessments: pre, post and 6 month f/u. During each assessment and intervention, subjects completed “one-way record” assessments tracking performance on a planar task without robotic assistance. Kinematics from these records were extracted to assess subject performance over the course of and within sessions. Results: For all participants, a significant decrease in mt was found at post-test and follow-up. No significant differences were found in mt for age, severity or group placement. A significant interaction was found between treatment day, block and group (p = .033). Significant mt differences were found between the three blocks of intervention within individual days (p = .001). Specifically, significant differences were found over the last block of treatment (p = .032) and between successive treatment days (p = .001). Conclusion: The results indicate that for children with CP participating in RR, the number of repetitions per session is important. We hypothesized that children’s performance would plateau during a treatment day as attention waned, the opposite proved to be true. Despite the high-number of repetitions and associated cognitive demand, subjects’ performance actually trended upwards throughout the 1,024 repetitions suggesting that children were able to tolerate and learn from a high volume of repetitions.
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    The Validity and Reliability of the PAVS and IPAQ-SF as Physical Activity Assessment Tools in Patients with Obstructive Sleep Apnea
    (2020-01) Adolphs, Max W.; Kaleth, Anthony; Keith, NiCole; Riley, Zachary; Warden, Stuart
    Efforts to encourage the medical community to prescribe exercise for disease prevention and management have increased significantly in recent years. In patients with obstructive sleep apnea (OSA), it is encouraging that exercise has been shown to improve sleep efficiency, daytime sleepiness, and disease severity. However, in order to better understand the dose-response relationship between exercise and OSA-related outcomes, accurate and reliable methods for assessing physical activity habits are needed. Purpose: To determine the test-retest reliability and validity of two self-report physical activity questionnaires [Physical Activity Vital Sign (PAVS); International Physical Activity Questionnaire-Short Form (IPAQ-SF)] in an OSA population. Methods: 39 adults with moderate-to-severe OSA wore an accelerometer for seven consecutive days and completed the PAVS and IPAQ-SF (twice within 10 d), along with questionnaires on quality of life, sleepiness, and treatment adherence. Test-retest reliability was determined using intraclass correlation coefficients (ICC). Criterion and construct validity were determined using Pearson (r) and Spearman correlation coefficients (ρ), respectively. Results: PAVS and IPAQ-SF scores were reported as total min/wk of moderate-vigorous physical activity (MVPA). Test-retest reliability for MVPA was excellent for PAVS (ICC = 0.982) and good for IPAQ-SF (ICC = 0.766). MVPA assessed via accelerometry was strongly correlated with PAVS (r = 0.802) and moderately with IPAQ-SF (r = 0.569). Both PAVS and IPAQ-SF were significantly correlated with body mass index (BMI) (ρ = -0.273 and -0.268, respectively), but no other variables. Conclusions: The PAVS and IPAQ-SF are reliable and valid PA questionnaires and may be utilized as a tool for accurately assessing physical activity levels in OSA patients.