Read by QxMD icon Read


Rachael Frost, Doreen McClurg, Marian Brady, Brian Williams
BACKGROUND: Diaries are the most commonly used adherence measurement method in home-based rehabilitation trials, yet their completion and validity varies widely between trials. We aimed to: (1) generate theory to explain this variation, (2) create an optimised diary and (3) evaluate the optimised diary's validity. METHODS: Stage 1. DEVELOPMENT: using a multiple case study approach, we collected trialist interviews (n = 7), trial publications (n = 16) and diaries (n = 7) from seven purposively sampled UK rehabilitation trials...
October 10, 2016: Trials
Rochelle Tobin, Justine Leavy, Jonine Jancey
BACKGROUND: Office-based staff spend around three quarters of their work day sitting. People who sit for long periods while at work are at greater risk of adverse health outcomes. OBJECTIVE: The pilot study aimed to determine the effect of sit-stand workstations on office-based staff sedentary and physical activity behaviors, work ability and self-reported physical and mental health outcomes. METHODS: A two-group pre-post study design assessed changes in sedentary and physical activity behaviors (time spent sitting, standing and stepping and sit-stand transitions and number of steps taken) work ability and physical and mental health...
September 29, 2016: Work: a Journal of Prevention, Assessment, and Rehabilitation
C S Chan, S E Slaughter, C A Jones, A S Wagg
Few studies have measured the activity patterns of continuing care residents using objective, uniaxial, accelerometers such as the activPAL. This exploratory study described the activity performance of continuing care residents and explored the correlation of activity performance with grip strength, falls and mobility. Data were gathered from 24 continuing care residents. Participants (82.3 ± 5.8 years of age), wore the activPAL an average of 12.60 hours per day (SD = 0.96) and were stepping for a median of 0...
2016: Journal of Frailty & Aging
Scott J Pedersen, Cecilia M Kitic, Marie-Louise Bird, Casey P Mainsbridge, P Dean Cooley
BACKGROUND: With the advent of workplace health and wellbeing programs designed to address prolonged occupational sitting, tools to measure behaviour change within this environment should derive from empirical evidence. In this study we measured aspects of validity and reliability for the Occupational Sitting and Physical Activity Questionnaire that asks employees to recount the percentage of work time they spend in the seated, standing, and walking postures during a typical workday. METHODS: Three separate cohort samples (N = 236) were drawn from a population of government desk-based employees across several departmental agencies...
2016: BMC Public Health
Sharifah Wajihah Wafa, Nur Nadzirah Aziz, Mohd Razif Shahril, Hasmiza Halib, Marhasiyah Rahim, Xanne Janssen
This study describes the patterns of objectively measured sitting, standing and stepping in obese children using the activPAL(TM) and highlights possible differences in sedentary levels and patterns during weekdays and weekends. Sixty-five obese children, aged 9-11 years, were recruited from primary schools in Terengganu, Malaysia. Sitting, standing and stepping were objectively measured using an activPAL(TM) accelerometer over a period of 4-7 days. Obese children spent an average of 69.6% of their day sitting/lying, 19...
August 18, 2016: Journal of Tropical Pediatrics
Luca Faconti, Maria J Silva, Oarabile R Molaodi, Zinat E Enayat, Aidan Cassidy, Alexis Karamanos, Elisa Nanino, Ursula M Read, Philippa Dall, Ben Stansfield, Seeromanie Harding, Kennedy J Cruickshank
OBJECTIVE: Traditional cardiovascular risk factors do not fully account for ethnic differences in cardiovascular disease. We tested if arterial function indices, particularly augmentation index (AIx), and their determinants from childhood could underlie such ethnic variability among young British adults in the 'DASH' longitudinal study. METHODS: DASH, at, includes representative samples of six main British ethnic groups. Pulse wave velocity (PWV) and AIx were recorded using the Arteriograph device at ages 21-23 years in a subsample (n = 666); psychosocial, anthropometric, and blood pressure (BP) measures were collected then and in two previous surveys at ages 11-13 years and 14-16 years...
November 2016: Journal of Hypertension
Niruthikha Mahendran, Suzanne S Kuys, Sandra G Brauer
Stroke survivors commonly adopt sedentary activity behaviours by the chronic phase of recovery. However, the change in activity behaviours from the subacute to chronic phase of stroke is variable. This study explored the recovery of ambulation activity (volume and bouts) at one, three and six months after hospital discharge post-stroke. A total of 42 stroke survivors were recruited at hospital discharge and followed up one, three and six months later. At follow-up, ambulation activity was measured over four days using the ActivPAL™ accelerometer...
September 2016: Gait & Posture
Kerry S Courneya, Margaret L McNeely, S Nicole Culos-Reed, Jeff K Vallance, Gordon J Bell, John R Mackey, Charles E Matthews, Andria R Morielli, Diane Cook, Sarah MacLaughlin, Megan S Farris, Stephanie Voaklander, Rachel O'Reilly, Christine M Friedenreich
BACKGROUND: To our knowledge, the Alberta Moving Beyond Breast Cancer (AMBER) Study is the first and only prospective cohort study of breast cancer survivors that includes objectively-measured physical activity (PA), sedentary behavior, health-related fitness (HRF), and biologic mechanisms focused on understanding breast cancer outcomes. The purpose of the present study was to report on the feasibility of recruitment, baseline measurement completion, and the representativeness of the first 500 participants...
2016: BMC Cancer
Rebecca M Meiring, Emmanuel Frimpong, Lipalo Mokete, Jurek Pietrzak, Dick Van Der Jagt, Mohammed Tikly, Joanne A McVeigh
BACKGROUND: Physical activity levels are decreased and sedentary behaviour levels are increased in patients with knee osteoarthritis (OA). However, previous studies have shown that following total knee arthroplasty (TKA), objectively measured physical activity levels do not change compared to before the surgery. Very few studies have objectively assessed sedentary behaviour following TKA. This study aims to assess patterns of objective habitual physical activity and sedentary behaviour in patients with knee OA and to determine whether these change following TKA...
2016: BMC Musculoskeletal Disorders
Kate Ridley, Nicola D Ridgers, Jo Salmon
BACKGROUND: Few studies have investigated the accuracy of the ActiGraph (AG) GTX3 accelerometer for assessing children's sitting and standing time. The activPAL (aP) has an inclinometer function that enables it to distinguish between sitting/lying and standing; however, its accuracy for assessing sitting and standing in older children is unknown. This study validated the accuracy of these devices for estimating sitting and standing time in a school classroom against a criterion measure of direct observation (DO)...
2016: International Journal of Behavioral Nutrition and Physical Activity
Toby G Pavey, Nicholas D Gilson, Sjaan R Gomersall, Bronwyn Clark, Stewart G Trost
OBJECTIVES: Wrist-worn accelerometers are convenient to wear and associated with greater wear-time compliance. Previous work has generally relied on choreographed activity trials to train and test classification models. However, validity in free-living contexts is starting to emerge. Study aims were: (1) train and test a random forest activity classifier for wrist accelerometer data; and (2) determine if models trained on laboratory data perform well under free-living conditions. DESIGN: Twenty-one participants (mean age=27...
June 23, 2016: Journal of Science and Medicine in Sport
Joshua N Sampson, Charles E Matthews, Laurence Freedman, Raymond J Carroll, Victor Kipnis
Sedentary behavior has already been associated with mortality, cardiovascular disease, and cancer. Questionnaires are an affordable tool for measuring sedentary behavior in large epidemiological studies. Here, we introduce and evaluate two statistical methods for quantifying measurement error in questionnaires. Accurate estimates are needed for assessing questionnaire quality. The two methods would be applied to validation studies that measure a sedentary behavior by both questionnaire and accelerometer on multiple days...
2016: Journal of Applied Statistics
Ceri Sellers, Philippa Dall, Margaret Grant, Ben Stansfield
Characterisation of physical activity and sedentary behaviour under free-living conditions is becoming increasingly important in light of growing evidence for the health implications of these behaviours. The integrity of long-term follow-up and the ability to compare outcomes between studies is critically dependent on the agreement of outcomes from successive generations of monitors. This study evaluated the agreement of the activPAL and second generation activPAL3 devices. Agreement was assessed in both adults (median 27...
July 2016: Gait & Posture
Katrien De Cocker, Ilse De Bourdeaudhuij, Greet Cardon, Corneel Vandelanotte
BACKGROUND: Effective interventions to influence workplace sitting are needed, as office-based workers demonstrate high levels of continued sitting, and sitting too much is associated with adverse health effects. Therefore, we developed a theory-driven, Web-based, interactive, computer-tailored intervention aimed at reducing and interrupting sitting at work. OBJECTIVE: The objective of our study was to investigate the effects of this intervention on objectively measured sitting time, standing time, and breaks from sitting, as well as self-reported context-specific sitting among Flemish employees in a field-based approach...
2016: Journal of Medical Internet Research
James P Sanders, Adam Loveday, Natalie Pearson, Charlotte Edwardson, Thomas Yates, Stuart J H Biddle, Dale W Esliger
BACKGROUND: It is well documented that meeting the guideline levels (150 minutes per week) of moderate-to-vigorous physical activity (PA) is protective against chronic disease. Conversely, emerging evidence indicates the deleterious effects of prolonged sitting. Therefore, there is a need to change both behaviors. Self-monitoring of behavior is one of the most robust behavior-change techniques available. The growing number of technologies in the consumer electronics sector provides a unique opportunity for individuals to self-monitor their behavior...
2016: Journal of Medical Internet Research
J Kennedy Cruickshank, Maria J Silva, Oarabile R Molaodi, Zinat E Enayat, Aidan Cassidy, Alexis Karamanos, Ursula M Read, Luca Faconti, Philippa Dall, Ben Stansfield, Seeromanie Harding
Early determinants of aortic stiffness as pulse wave velocity are poorly understood. We tested how factors measured twice previously in childhood in a multiethnic cohort study, particularly body mass, blood pressure, and objectively assessed physical activity affected aortic stiffness in young adults. Of 6643 London children, aged 11 to 13 years, from 51 schools in samples stratified by 6 ethnic groups with different cardiovascular risk, 4785 (72%) were seen again at aged 14 to 16 years. In 2013, 666 (97% of invited) took part in a young adult (21-23 years) pilot follow-up...
June 2016: Hypertension
Belle H de Rooij, Julianne D van der Berg, Carla J H van der Kallen, Miranda T Schram, Hans H C M Savelberg, Nicolaas C Schaper, Pieter C Dagnelie, Ronald M A Henry, Abraham A Kroon, Coen D A Stehouwer, Annemarie Koster
BACKGROUND: Both obesity and the metabolic syndrome are associated with increased risk of cardiovascular diseases and type 2 diabetes. Although both frequently occur together in the same individual, obesity and the metabolic syndrome can also develop independently from each other. The (patho)physiology of "metabolically healthy obese" (i.e. obese without metabolic syndrome) and "metabolically unhealthy non-obese" phenotypes (i.e. non-obese with metabolic syndrome) is not fully understood, but physical activity and sedentary behavior may play a role...
2016: PloS One
Jochen Klenk, Dhayana Dallmeier, Michael Dieter Denkinger, Kilian Rapp, Wolfgang Koenig, Dietrich Rothenbacher
BACKGROUND: Physical activity is an important component of health. Recommendations based on sensor measurements are sparse in older people. The aim of this study was to analyse the effect of objectively measured walking and sedentary duration on four-year mortality in community-dwelling older people. METHODS: Between March 2009 and April 2010, physical activity of 1271 participants (≥65 years, 56.4% men) from Southern Germany was measured over one week using a thigh-worn uni-axial accelerometer (activPAL; PAL Technologies, Glasgow, Scotland)...
2016: PloS One
Annemarie Koster, Eric J Shiroma, Paolo Caserotti, Charles E Matthews, Kong Y Chen, Nancy W Glynn, Tamara B Harris
PURPOSE: Sedentary behavior is an emerging independent health risk factor. The accuracy of measuring sedentary time using accelerometers may depend on the wear location. This study in older adults evaluated the accuracy of various hip- and wrist-worn ActiGraph accelerometer cutoff points to define sedentary time using the activPAL as the reference method. METHODS: Data from 62 adults (mean age, 78.4 yr) of the Aging Research Evaluating Accelerometry study were used...
August 2016: Medicine and Science in Sports and Exercise
Laura D Ellingson, Isaac J Schwabacher, Youngwon Kim, Gregory J Welk, Dane B Cook
UNLABELLED: Accurate assessments of both physical activity and sedentary behaviors are crucial to understand the health consequences of movement patterns and to track changes over time and in response to interventions. PURPOSE: The study evaluates the validity of an integrative, machine learning method for processing activity monitor data in relation to a portable metabolic analyzer (Oxycon mobile [OM]) and direct observation (DO). METHODS: Forty-nine adults (age 18-40 yr) each completed 5-min bouts of 15 activities ranging from sedentary to vigorous intensity in a laboratory setting while wearing ActiGraph (AG) on the hip, activPAL on the thigh, and OM...
August 2016: Medicine and Science in Sports and Exercise
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"