Publications by authors named "Dawn Mackey"

Introduction: The use of theories, models and/or frameworks (TMFs) in implementation research and practice is essential for developing useful and testable implementation strategies. Recommendations and tools exist to aid implementation groups in selecting TMFs, but they do not explicitly outline a systematic method for identifying and selecting TMFs. This paper aimed to (1) propose a systematic consensus-based method to select TMFs to support implementation processes, and to (2) demonstrate the use of this novel method in the context of researching the implementation of hip protectors for fracture prevention in long-term care (LTC).

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This study aims to address and improve the low physical activity levels among people with mild dementia by implementing a novel shared decision-making and motivational support program, named "Changing the Focus". It will utilise a pre-post mixed methods approach, aiming to recruit 60 community living older people with mild dementia and their care-partners. The shared decision-making process will involve the person living with dementia, their care-partner, and a research therapist, using a purpose-designed discussion tool including factors such as preferred physical activities, health status, local opportunities and program accessibility.

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Background/objectives: Randomized controlled trials that deliver physical activity interventions have demonstrated benefits for older adults across numerous health outcomes. However, too little attention has been directed to ensuring that such trials are measuring patient-relevant outcomes. To support outcome selection for future trials, the objective of this study was to understand what outcomes related to their physical activity participation older adults find important.

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Few older adults discuss their end-of-life care wishes with their physician, and even fewer minorities do this. We explored physicians' experience with advance care planning (ACP) including the barriers/facilitating factors encountered when initiating/conducting ACP discussions with South Asians (SA), one of Canada's largest minorities. Eleven primary care physicians (PC) and 11 hospitalists with ≥ 15 per cent SA patients ≥ 55 years of age were interviewed: 10 in 2020, 12 in 2021.

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Importance: Life space is a measure of the frequency, range, and independence of movement through the environment. There is increasing interest in life space as a holistic measure of function in older adults, but the association between change in life space and incident neurodegenerative disease is unknown.

Objective: To evaluate the association between change in life space and cognitive decline or incident neurodegenerative disease over 7 years among community-dwelling older men.

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To support older adults during the first wave of COVID-19, we rapidly adapted our effective health-promoting intervention (Choose to Move [CTM]) for virtual delivery in British Columbia, Canada. The intervention was delivered (April-October 2020) to 33 groups of older adults ("programs") who were a convenience sample (had previously completed CTM in person; n = 153; 86% female; 73 [6] years). We compared implementation outcomes (recruitment, dose received, retention, and completion of virtual data collection) to predetermined feasibility targets.

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We aim to describe older mens' experiences with physical activity (PA) and their preferences for PA programs. We interviewed 14 men from a Canada-based PA intervention study called Men on the Move, and 5 men from a supplementary sample (who were not intervention participants). Content analysis was used to describe their experiences with PA and program preferences.

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Background: Toward development of a core outcome set for randomized controlled trials (RCTs) of physical activity (PA) interventions for older adults, the purpose of this study was to identify outcome domains and subdomains ('what' was measured) in previously published RCTs of PA for older adults.

Methods: We conducted a rapid review and searched Ovid MEDLINE for recently- published (2015-2021), English-language, RCTs of PA interventions for older adults (mean age 60+ yrs). We limited to articles published in Web of Science top-10 journals in general and internal medicine, geriatrics and gerontology, rehabilitation, and sports science.

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Background: falls are common in older adults, and any fall from standing height onto a rigid surface has the potential to cause a serious brain injury or bone fracture. Safe strategies for falling in humans have traditionally been difficult to study.

Objective: to determine whether specific 'safe landing' strategies (body rotation during descent, and upper limb bracing) separate injurious and non-injurious falls in seniors.

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Background: Falls are the leading cause of injuries in older adults. However, most falls in older adults do not cause serious injury, suggesting that older adults may fall in a manner that reduces the likelihood of impact to body sites that are most vulnerable to injury. In this observational study of falls in long-term care (LTC), we tested whether body parts differed in their probability of impact and injury.

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The capacity to recover motor function with pathology or age-related decline is termed physical resilience. It is unknown what outcome domains are captured with existing measurement instruments. Thus, this scoping review aimed to identify measurement instruments for physical resilience, identify research gaps, and make recommendations for future research.

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Background: Injurious falls in hospitals and care homes are a life-limiting and costly international issue. Shock-absorbing flooring may offer part of the solution; however, evidence is required to inform decision-making.

Objectives: The objectives were to assess the clinical effectiveness and cost-effectiveness of shock-absorbing flooring for fall-related injury prevention among older adults in care settings.

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Background: Shock-absorbing flooring may minimise impact forces incurred from falls to reduce fall-related injuries; however, synthesized evidence is required to inform decision-making in hospitals and care homes.

Methods: This is a Health Technology Assessment mixed methods systematic review of flooring interventions targeting older adults and staff in care settings. Our search incorporated the findings from a previous scoping review, MEDLINE, AgeLine, and Scopus (to September 2019) and other sources.

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Objectives: To determine the association of life-space score with subsequent healthcare costs and utilization.

Design: Prospective cohort study (Osteoporotic Fracture in Men [MrOS]).

Setting: Six U.

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Background: To assess whether commercial-grade activity monitors are appropriate for measuring step counts in older adults, it is essential to evaluate their measurement properties in this population.

Objective: This study aimed to evaluate test-retest reliability and criterion validity of step counting in older adults with self-reported intact and limited mobility from 6 commercial-grade activity monitors: Fitbit Charge, Fitbit One, Garmin vívofit 2, Jawbone UP2, Misfit Shine, and New-Lifestyles NL-1000.

Methods: For test-retest reliability, participants completed two 100-step overground walks at a usual pace while wearing all monitors.

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Introduction: Falls in hospitals and care homes are a major issue of international concern. Inpatient falls are the most commonly reported safety incident in the UK's National Health Service (NHS), costing the NHS £630 million a year. Injurious falls are particularly life-limiting and costly.

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Background: Fall-related injuries exert an enormous health burden on older adults in long-term care (LTC). Softer landing surfaces, such as those provided by low-stiffness "compliant" flooring, may prevent fall-related injuries by decreasing the forces applied to the body during fall impact. Our primary objective was to assess the clinical effectiveness of compliant flooring at preventing serious fall-related injuries among LTC residents.

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Background: Physical resilience is the ability to optimize or recover motor function in the face of disease, injury, or aging-related decline. Greater knowledge of how some individuals regain or maintain function despite pathology may help identify protective factors and approaches that promote healthy aging. To date, a scoping review on physical resilience has not been conducted.

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We conducted Men on the Move, a 12-week randomized controlled feasibility trial of a scalable, choice-based, physical activity (PA) and active transportation intervention. Participants were community-dwelling men aged 60 years and older (n = 29 intervention [INT] and n = 29 waitlist control [CON]). Trained activity coaches delivered: (a) one-on-one participant consultations to develop personal action plans for PA and active transportation, (b) monthly group-based motivational meetings, (c) weekly telephone support, (d) complimentary recreation and transit passes, and (e) pedometers and diaries for self-monitoring.

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Background And Objectives: Mobility limitation is common and has been linked to high energetic requirements of daily activities, including walking. The study objective was to determine whether two separate forms of exercise could reduce the energy cost of walking and secondary outcomes related to activity and participation domains among older adults with mobility limitation.

Research Design And Methods: Community-dwelling older adults with self-reported mobility limitation ( = 72) were randomized to 12 weeks of twice-weekly, group-based, instructor-led timing and coordination, aerobic walking, or stretching and relaxation (active control) programs.

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North American "hegemonic masculinity" values strength, autonomy, independence, and resilience among its ideals. As men age, their capacity is increasingly challenged and demands that they adapt to new physical and social realities. Although some reports on effective health-promoting programs for men are emerging, there is a need to better understand older men's experiences with their mobility and physical activity.

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Article Synopsis
  • Multimorbidity, a crucial public health concern affecting many older adults, has led to the creation of a resilience index that evaluates functional, social, and psychological domains to support better health adaptations.
  • This study utilized data from the Canadian Longitudinal Study on Aging involving 6,771 adults aged 65+, examining how resilience scores relate to health outcomes like perceived health, sleep quality, and hospital visits, adjusting for various demographic factors.
  • The findings indicate that higher resilience is linked to improved health perceptions and reduced health service usage, suggesting that developing resilience can enhance health outcomes for those with multiple chronic conditions.
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Purpose-designed compliant flooring and carpeting have been promoted as a means for reducing fall-related injuries in high-risk environments, such as long-term care. However, it is not known whether these surfaces influence the forces that long-term care staff exert when pushing residents in wheelchairs. We studied 14 direct-care staff who pushed a loaded wheelchair instrumented with a triaxial load cell to test the effects on hand force of flooring overlay (vinyl versus carpet) and flooring subfloor (concrete versus compliant rubber [brand: SmartCells]).

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Compliant flooring aims to prevent fall-related injuries among high-risk older adults in long-term care, but uptake of compliant flooring in this setting is limited. We hosted a one-day stakeholder symposium to identify advantages and disadvantages of implementing compliant flooring in long-term care and the most pressing directions for future research from the perspective of key stakeholders. Twenty-three stakeholders representing health care, industry, and research attended the symposium.

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Background: Total daily energy expenditure (TEE) is composed of resting metabolic rate (RMR), post-prandial thermogenesis and activity energy expenditure (AEE). Higher AEE is strongly associated with lower mortality and physical limitations among older adults, but factors that predict changes in AEE in septu and octogenarians are not clearly understood.

Objective: To identify factors associated with late-life longitudinal change in AEE.

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