ORCID Profile
0000-0002-8320-3342
Current Organisation
McMaster University
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Publisher: Hindawi Limited
Date: 2015
DOI: 10.1155/2015/478528
Abstract: BACKGROUND: In addition to symptoms, such as dyspnea and fatigue, patients with chronic obstructive pulmonary disease (COPD) also experience mood disturbances. OBJECTIVE: To explore the relationships between health-related quality of life measures collected from patients with stable COPD and a commonly used measure of depression and anxiety. METHODS: The present analysis was a retrospective study of patients with COPD enrolled in a pulmonary rehabilitation program. Hospital Anxiety and Depression Scale (HADS), Chronic Respiratory Disease Questionnaire (CRQ), Medical Research Council dyspnea scale and 6 min walk test data were collected. Statistical analyses were performed using Spearman’s correlations, and categorical regression and categorical principal component analysis were interpreted using the biplot methodology. RESULTS: HADS anxiety scores retrieved from 80 patients were grouped as ‘no anxiety’ (n=43 [54%]), ‘probable anxiety’ (n=21 [26%]) and ‘presence of anxiety’ (n=16 [20%]). HADS depression scores were similarly grouped. There was a moderate relationship between the anxiety subscale of the HADS and both the emotional function (r=−0.519 P .01) and mastery (r=−0.553 P .01) domains of the CRQ. Categorical regression showed that the CRQ-mastery domain explained 40% of the total variation in anxiety. A principal component analysis biplot showed that the highest distance between the groups was along the mastery domain, which separated patients without feelings of anxiety from those with anxiety. However, none of the CRQ domains were able to discriminate the three depression groups. CONCLUSIONS: The CRQ-mastery domain may identify symptoms of anxiety in patients with COPD however, the relationship is not strong enough to use the CRQ-mastery domain as a surrogate measure. None of the CRQ domains were able to discriminate the three depression groups (no depression, probable and presence) therefore, specific, validated tools to identify symptoms of depression should be used.
Publisher: Elsevier BV
Date: 02-2012
DOI: 10.1016/J.CLINBIOMECH.2011.08.003
Abstract: There are robust clinical paradigms against the prescription of walking sticks for people with stroke. However, there is little information on the biomechanics of gait with and without these devices to guide clinical practice. Therefore, this study investigated how the use of walking sticks (canes or crutches) affected both the kinematics and kinetics of gait in people with chronic stroke after their walking had stabilized. Nineteen people with chronic stroke walked at both comfortable and fast speeds. A 3-D motion analysis system and one force platform were used to obtain kinematic and kinetic data of the paretic lower limb during four conditions: With and without walking sticks, and at comfortable and fast speeds. Outcomes included linear kinematics (walking speeds) and angular kinematics (maximum joint angles), power, and work of the paretic hip, knee and ankle joints in the saggital plane. The use of walking sticks resulted in increases in speed during both fast (P<0.001) and comfortable (P=0.001) walking, but did not result in changes in maximum joint angles. This also led to increases in ankle plantar flexion (P<0.01), knee extension (P<0.01), and hip flexion (P<0.001) power generation, but did not result in changes in work. There were no greater changes as a result of using walking sticks during fast versus comfortable walking for any outcome. INTERPRETATIN: The outcomes with the use of walking sticks were beneficial, which suggests that the prescription of these devices is not detrimental to walking that was stabilized in people with stroke.
No related grants have been discovered for Renata Kirkwood.