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All Subjects: Arthritis
Creators: Harper, Erin
Creators: Kerth, Sonja

DIFFERENCES IN UNILATERAL CHEST PRESS MUSCLE ACTIVATION ON A STABLE VERSUS UNSTABLE SURFACE WHILE HOLDING ONE VERSUS TWO DUMBBELLS

Description

Training the bench press exercise on a traditional flat bench does not induce a level of instability as seen in sport movements and activities of daily living. Because of this, many new types of equipment have been created in an attempt to induce instability, such as the COR Bench. 15 males and 7 females between the ages of 18 and 30 were recruited for the present study, which tested two forms of instability: using one dumbbell rather than two, and lifting on the COR bench compared to a flat bench. Thusly, EMG was used to measure muscle activity in four separate conditions of unilateral bench press movements: on a flat bench with one dumbbell, on a flat bench with two dumbbells, on the COR Bench with one dumbbell, and on the COR Bench with two dumbbells. Results indicated that lifting with one dumbbell compared to two dumbbells on the flat bench significantly increased muscle activity across all four muscles being analyzed (pectoralis major, p = .005; middle trapezius, p = .008; external obliques, p = .004; and internal obliques, p = .003), but lifting with one dumbbell compared to two dumbbells on the COR Bench only significantly increased muscle activity in the middle trapezius (p = .001), external obliques(p = . 032), and internal obliques (p = .001). The only muscle to exhibit a significant increase in muscle activity when going from one dumbbell on the flat bench to one dumbbell on the COR Bench was the middle trapezius (p = .010). These results imply that the COR Bench itself does not increase muscle activity as much as switching from two dumbbells to one dumbbell, regardless of the bench being used.

ContributorsPatterson, Jeffrey (Author) / Harper, Erin (Thesis director) / Broman, Tannah (Committee member) / Cataldo, Donna (Committee member) / Barrett, The Honors College (Contributor) / School of Nutrition and Health Promotion (Contributor)

Created2013-12

A Simpler Method To Evaluate The Knee Adduction Moment During Gait Using Plantar Pressure Measurements

Description

Medial compartment knee osteoarthritis (OA) is a disease whose severity has been associated with the peak adduction moment during walking (pKAM). Unfortunately, measuring patients' pKAM to track their therapy progress involves the use of a gait laboratory which is expensive and time intensive. This study aimed to develop and assess a regression method to predict the pKAM using only plantar pressure measurements. This approach could greatly reduce the burden of evaluating pKAM.

ContributorsThomas, Kevin Andrew (Author) / Hinrichs, Richard (Thesis director) / Harper, Erin (Committee member) / Favre, Julien (Committee member) / Barrett, The Honors College (Contributor) / Harrington Bioengineering Program (Contributor)

Created2014-05

Self-Management Education and Arthritis Disability in the Underserved Latino Community

Description

Purpose:
The purpose was to implement a self-management program to decrease pain and disability and improve self-efficacy among low-income, Latino individuals diagnosed with arthritis.

Background:
All arthritis pain has the potential to impair mobility. Arthritis is the leading cause of disability among American adults, with over 50 million individuals affected. The Latino population experiences a disproportionate incidence of disability attributable to arthritis compared to other populations. Evidence supports self-management education incorporating physical activity as a promising intervention for arthritis.

Methods:
The intervention included a curriculum developed by the Arthritis Association, three teaching sessions, and a pre/post-test. Anticipated outcomes included decreased pain measured by the Pain Visual Numeric, decreased report of disability measured by the Stanford HAQ, and increased self-efficacy measured by the Arthritis Self-Efficacy Scale. The setting was a faith-based medical clinic that services the uninsured population located within Southwest Arizona. Participants included Spanish and English speaking adults diagnosed with arthritis.

Results:
Twelve participants were consented however, only eight participants completed the entire project. Although the mean pain score decreased, indicating reduced pain, it was not statistically significant (pretest- M=5.75 SD=3.19; posttest- M=5.25 SD=2.82; z (7)=-.11, p= .92). However, there was a statistically significant increase in reports of exercise after the intervention (pretest M=.83, SD=.39; posttest- M=.43, SD=.53; z (6)=-2.0, p =.046). This was in response to an non validated question developed by the primary investigator and co-investigator of, “Do you currently exercise?”.

Conclusions:
Results include increases in reports of exercise post-intervention and decreased pain. The use of non-pharmacological interventions such as self-management to reduce pain and increase mobility in arthritic patients can help lessen the socioeconomic health disparity gaps.

ContributorsKerth, Sonja (Author) / Velasquez, Donna (Thesis advisor)

Created2016-05-06