Exercise, Processing Speed, and Subsequent Falls: A Secondary Analysis of a 12-Month Randomized Controlled Trial.

Background: Strength and balance retraining exercises reduce the rate of subsequent falls in community-dwelling older adults who have previously fallen. Exercise can also improve cognitive function, including processing speed. Given processing speed predicts subsequent falls, we aimed to determine whether improved processing speed mediated the effects of the Otago Exercise Program on the rate of subsequent: (i) total falls, (ii) non-injurious falls, (iii) moderate injurious falls, and (iv) serious injurious falls.

Balance and functional mobility predict low bone mineral density among postmenopausal women undergoing recent menopause with osteoporosis, osteopenia, and normal bone mineral density: A cross-sectional study.

The purpose of this study was to determine whether balance and functional mobility independently predict bone mineral density (BMD) in postmenopausal women. BMD at the hip and spine was measured with dual-energy x-ray absorptiometry (DEXA). Participants were assigned into groups (i.

Orthopaedic Surgeon Brain Radiation During Fluoroscopy: A Cadaver Model.

Background: The aims of this study were to quantify exposure of the surgeon's brain to radiation during short cephalomedullary (SC) nailing, to extrapolate lifetime dose, and to determine the effects of personal protective equipment (PPE) on brain dose.

Methods: Two cadaveric specimens were used: (1) a whole cadaveric body representing the patient, with a left nail inserted to act as the scatter medium, and (2) an isolated head-and-neck cadaveric specimen representing a surgeon, with radiation dosimeters placed in specific locations in the brain. The "patient" cadaver's left hip was exposed in posteroanterior and lateral radiographic planes.

Comprehensive Geriatric Care to Improve Mobility after Hip Fracture: An RCT.

Background: Comprehensive geriatric care (CGC) for older adults during hospitalization for hip fracture can improve mobility, but it is unclear whether CGC delivered after a return to community living improves mobility compared with usual post-discharge care.

Objective: To determine if an outpatient clinic-based CGC regime in the first year after hip fracture improved mobility performance at 12 months.

Methods: A two-arm, 1:1 parallel group, pragmatic, single-blind, single-center, randomized controlled trial at 3 hospitals in Vancouver, BC, Canada.

Sedentary Time and Metabolic Risk in Extremely Active Older Adults.

Objective: Increasing evidence suggests that time spent sedentary predicts increasing cardiometabolic risk independent of other physical activity. We objectively measured activity levels in active older adults and examined the association between sedentary behavior and the continuous metabolic syndrome risk score (cMSy).

Research Design And Methods: Older adults (age ≥65 years) were recruited from the Whistler Masters ski team, a group of active older adults who undergo organized group training.

Variation in surgical demand and time to hip fracture repair: a Canadian database study.

Background: Competing demands for operative resources may affect time to hip fracture surgery. We sought to determine the time to hip fracture surgery by variation in demand in Canadian hospitals.

Methods: We obtained discharge abstracts of 151,952 patients aged 65 years or older who underwent surgery for a hip fracture between January, 2004 and December, 2012 in nine Canadian provinces.

Point-of-care ultrasound measures of muscle and frailty measures.

Purpose: Frailty is defined as a syndrome of increased vulnerability due to both age and disease that leads to an inability to cope with acute stressors. There has been growing interest in the surgical and emergency medicine literature in the potential use of Point-of-Care ultrasonic (PoCUS) measures of muscle mass to assess frailty in older adults. Our study examined the association between a simple ultrasonic measure of muscle thickness (MT, vastus medialis muscle thickness) and commonly used frailty measures (Cardiovascular Health Study, CHS; Rockwood Clinical Frailty Scale, RCFS) in older adults.

A rapid point-of-care ultrasound marker for muscle mass and muscle strength in older adults.

Background/objectives: Sarcopenia is defined as the gradual age-associated loss of both muscle quantity and strength in older adults, and is associated with increased mortality, falls, fractures and hospitalisations. Current sarcopenia criteria use dual-energy X-ray absorptiometry (DXA) measures of muscle mass, a test that cannot be performed at the bedside, unlike point-of-care ultrasound (PoCUS). We examined the association between ultrasonic measures of muscle thickness (MT, vastus medialis muscle thickness) and measures of muscle quantity and strength in older adults.

Globular structure of the hypermineralized tissue in human femoral neck.

Bone becomes more fragile with ageing. Among many structural changes, a thin layer of highly mineralized and brittle tissue covers part of the external surface of the thin femoral neck cortex in older people and has been proposed to increase hip fragility. However, there have been very limited reports on this hypermineralized tissue in the femoral neck, especially on its ultrastructure.

Intramuscular stimulation vs sham needling for the treatment of chronic midportion Achilles tendinopathy: A randomized controlled clinical trial.

Background: The insertion of filiform needles intramuscularly (a.k.a.

Cortisol Synchrony in Older Couples: Daily Socioemotional Correlates and Interpersonal Differences.

Objective: Social relationships can have positive and negative influences, and these associations are particularly pronounced in old age. This study focuses on everyday interpersonal physiological dynamics (cortisol synchrony) in older couples and investigates its associations with partner presence, positive daily partner interactions, and empathy.

Methods: We conducted coordinated multilevel analyses using data from two samples of older couples from Vancouver, Canada, and Berlin, Germany (study 1: n = 85 couples aged 60-87 years; study 2: n = 77 couples aged 66-85 years), who completed questionnaires and provided salivary cortisol samples five to seven times daily for 7 days.

Standing Balance Strategies and Dual-Task Interference Are Differentially Modulated Across Various Sensory Contexts and Cognitive Tests in Individuals With Chronic Stroke.

Background And Purpose: Mental tracking and verbal fluency tests have been linked to poor mobility and falls; however, no studies have examined the influence of imposing these tests on standing balance post-stroke. The purpose of this study was to investigate standing balance and cognitive performance across sensory conditions and cognitive tests post-stroke.

Methods: Ninety-two participants with chronic stroke stood on dual-force platforms while performing various sensory conditions (eyes open/fixed surface, eyes closed/fixed surface, eyes open/sway-referenced surface, and eyes closed/sway-referenced surface) and cognitive tests (no cognitive test, serial subtractions, and verbal fluency).

Effects of Resistance Exercise with Instability on Cognitive Function (REI Study): A Proof-Of-Concept Randomized Controlled Trial in Older Adults with Cognitive Complaints.

Background: Activities which simultaneously challenge both physical and cognitive function are promising strategies for promoting cognitive function.

Objective: To examine the effects of resistance exercise with instability and traditional resistance exercise compared with a health education control on cognitive function in older adults with cognitive complaints.

Methods: Sixty-seven participants were randomized to either 12 weeks of thrice-weekly resistance exercise (RE = 23), RE with instability (REI = 22), or a weekly health education control (CON = 22).

Objective measurement of physical activity and sedentary behavior among South Asian adults: A systematic review.

Background: South Asians are one of the fastest growing ethnic groups in western countries with a high incidence of chronic diseases like metabolic syndrome and cardiovascular disease occurring at younger ages and lower body weight compared with white Europeans. Physically active lifestyle and reduced sedentary time are modifiable risk factors that can decrease burden of chronic diseases. Population-level surveys based on self-report show South Asians engage in low levels of physical activity.

Conditioned pain modulation in elite athletes: a systematic review and meta-analysis.

Background and aims Elite athletes reportedly have superior pain tolerances, but it is unclear if results extend to conditioned pain modulation (CPM). The aim of our study was to synthesize existing literature in order to determine whether CPM is increased in elite athletes compared to healthy controls. Methods A systematic review and random-effects meta-analysis was conducted.

β1 integrin, ILK and mTOR regulate collagen synthesis in mechanically loaded tendon cells.

Tendons are specialized tissues composed primarily of load-responsive fibroblasts (tenocytes) embedded in a collagen-rich extracellular matrix. Habitual mechanical loading or targeted exercise causes tendon cells to increase the stiffness of the extracellular matrix; this adaptation may occur in part through collagen synthesis or remodeling. Integrins are likely to play an important role in transmitting mechanical stimuli from the extracellular matrix to tendon cells, thereby triggering cell signaling pathways which lead to adaptive regulation of mRNA translation and protein synthesis.

Walking soccer: A systematic review of a modified sport.

Background: Walking soccer (football) is an emerging modified sport gaining recognition globally.

Objectives: To synthesize current evidence for walking soccer and provide a summary of global walking soccer organizations.

Data Sources: We searched for studies published across all years and all languages within multiple databases for studies focused on walking soccer (football) in adults (18 + years).

Correction: A pragmatic randomized controlled trial testing the effects of the international scientific SCI exercise guidelines on SCI chronic pain: protocol for the EPIC-SCI trial.

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Formative Evaluation of Consumer-Grade Activity Monitors Worn by Older Adults: Test-Retest Reliability and Criterion Validity of Step Counts.

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.

Adaptation of public health initiatives: expert views on current guidance and opportunities to advance their application and benefit.

While there is some guidance to support the adaptation of evidence-based public health interventions, little is known about adaptation in practice and how to best support public health practitioners in its operationalization. This qualitative study was undertaken with researchers, methodologists, policy makers and practitioners representing public health expert organizations and universities internationally to explore their views on available adaptation frameworks, elicit potential improvements to such guidance, and identify opportunities to improve implementation of public health initiatives. Participants attended a face to face workshop in Newcastle, Australia in October 2018 where World Café and focus group discussions using Appreciative Inquiry were undertaken.

Conducting a Mixed-Methods Study with Older Adults in Five Languages: Lessons from the Field.

One third of older adults in Canada are foreign-born, yet there is a dearth of literature on this population. When our team set out to engage in a mixed-methods study on the physical activity and mobility of foreign-born older adults (FBOAs), we found limited guidance. The objective of this Research Note is to share the lessons that we learned in implementing a mixed-methods study in five languages, with 49 visible minority FBOAs from diverse ethno-cultural groups.

Deficits in bone strength, density and microarchitecture in women living with HIV: A cross-sectional HR-pQCT study.

Purpose: With the advent of combined antiretroviral therapy (cART), life expectancy has increased among persons living with HIV, but so too has risk for comorbidities including osteoporosis and fragility fracture. To explore whether HIV status and cART influence three-dimensional measures of BMD, bone microarchitecture and strength we aimed to compare these outcomes between women living with HIV (WLWH; n = 50; 50.4 ± 1.

Intervention reporting and dissemination of information for the management of hand osteoarthritis.

Introduction: A variety of exercise programs are recognized to be effective for the management of hand osteoarthritis (HOA). It is important to report the essential elements of these exercise programs for clinicians to replicate properly and facilitate their implementation with individuals who suffers from HOA, especially if they are found to be effective programs.

Purpose Of The Study: The objective of this article was to assess content reporting using three exercise reporting standardized assessment tools among exercise interventions randomized controlled trials (RCTs) involving individuals with HOA.

Detecting human articular cartilage degeneration in its early stage with polarization-sensitive optical coherence tomography.

Detecting articular cartilage (AC) degeneration in its early stage plays a critical role in the diagnosis and treatment of osteoarthritis (OA). Polarization-sensitive optical coherence tomography (PS-OCT) is sensitive to the alteration and disruption of collagen organization that happens during OA progression. This study proposes an effective OA evaluating method based on PS-OCT imaging.