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Accelerometry and older adults

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https://www.readbyqxmd.com/read/28422585/validation-of-the-ipaq-against-different-accelerometer-cut-points-in-older-cancer-survivors-and-adults-at-risk-of-cancer
#1
Liane S Lewis, James Hernon, Allan Clark, John M Saxton
INTRODUCTION: The present study investigated the convergent validity of an interview-administered IPAQ long version (IPAQ-L) in an older population by comparison with objective accelerometry movement data. METHODS: Data from 52 participants (mean age 67.9 years, 62% male) were included in the analysis. Treadmill derived (TM-ACC: 1952-5724 cpm) and free-living physical activity (PA) derived (FL-ACC: 760-5724 cpm) accelerometer cut-points were used as criterion. RESULTS: IPAQ-L measures (total PA, leisure-time, walking-time, sedentary time) were significantly correlated with accelerometry (P≤0...
April 19, 2017: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/28395672/neighborhood-walkability-physical-activity-and-walking-for-transportation-a-cross-sectional-study-of-older-adults-living-on-low-income
#2
Anna M Chudyk, Heather A McKay, Meghan Winters, Joanie Sims-Gould, Maureen C Ashe
BACKGROUND: Walking, and in particular, outdoor walking, is the most common form of physical activity for older adults. To date, no study investigated the association between the neighborhood built environment and physical activity habits of older adults of low SES. Thus, our overarching aim was to examine the association between the neighborhood built environment and the spectrum of physical activity and walking for transportation in older adults of low socioeconomic status. METHODS: Cross-sectional data were from the Walk the Talk Study, collected in 2012...
April 10, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28329086/obesity-history-and-daily-patterns-of-physical-activity-at-age-60-64-years-findings-from-the-mrc-national-survey-of-health-and-development
#3
Rachel Cooper, Lei Huang, Rebecca Hardy, Adina Crainiceanu, Tamara Harris, Jennifer A Schrack, Ciprian Crainiceanu, Diana Kuh
Background: The aim of this study was to investigate associations of current body mass index (BMI) and obesity history with daily patterns of physical activity. Methods: At age 60-64, participants from a British birth cohort study wore accelerometers for 5 days. Accelerometry counts were log-transformed and mean log-counts were used to derive a summary variable indicating total daily log-activity counts. Among those with complete data (n = 1,388) the associations of current BMI and age of first obesity were examined with: (a) total daily log-activity counts and (b) total log-activity counts in four segments of the day...
February 18, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329025/correction-measuring-physical-activity-with-hip-accelerometry-among-u-s-older-adults-how-many-days-are-enough
#4
Masha Kocherginsky, Megan Huisingh-Scheetz, William Dale, Diane S Lauderdale, Linda Waite
[This corrects the article DOI: 10.1371/journal.pone.0170082.].
2017: PloS One
https://www.readbyqxmd.com/read/28241469/dietary-protein-in-older-adults-adequate-daily-intake-but-potential-for-improved-distribution
#5
Danielle K Cardon-Thomas, Timothy Riviere, Zoë Tieges, Carolyn A Greig
Daily distribution of dietary protein may be important in protecting against sarcopenia, specifically in terms of per meal amounts relative to a proposed threshold for maximal response. The aims of this study were to determine total and per meal protein intake in older adults, as well as identifying associations with physical activity and sedentary behavior. Three-day food diaries recorded protein intake in 38 participants. Protein distribution, coefficient of variation (CV), and per meal amounts were calculated...
February 23, 2017: Nutrients
https://www.readbyqxmd.com/read/28153018/physical-activity-levels-objectively-measured-among-older-adults-a-population-based-study-in-a-southern-city-of-brazil
#6
Virgílio Viana Ramires, Fernando César Wehrmeister, Andrea Wendt Böhm, Leony Galliano, Ulf Ekelund, Soren Brage, Inácio Crochemore Mohnsam da Silva
BACKGROUND: Low levels of physical activity are currently observed in all age groups around the world. Among older adults physical activity is even lower, potentially influencing quality of life, incidence of diseases and premature mortality. The aim of this study was to describe objectively measured physical activity levels among older adults residents in a Southern city of Brazil. METHODS: A population-based study was carried out including people aged 60+ years living in the urban area of Pelotas...
February 2, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28081249/measuring-physical-activity-with-hip-accelerometry-among-u-s-older-adults-how-many-days-are-enough
#7
Masha Kocherginsky, Megan Huisingh-Scheetz, William Dale, Diane S Lauderdale, Linda Waite
INTRODUCTION: Accelerometers are increasingly used in research. Four to 7 days of monitoring is preferred to estimate average activity but may be burdensome for older adults. We aimed to investigate: 1) 7-day accelerometry protocol adherence, 2) demographic predictors of adherence, 3) day of the week effect, and 4) average activity calculated from 7 versus fewer days among older adults. METHODS: We used the 2003-2006 older adult hip accelerometry data from the National Health and Nutrition Examination Survey (NHANES) sample...
2017: PloS One
https://www.readbyqxmd.com/read/28078090/the-effect-of-ongoing-feedback-on-physical-activity-levels-following-an-exercise-intervention-in-older-adults-a-randomised-controlled-trial-protocol
#8
Katie-Jane Brickwood, Stuart T Smith, Greig Watson, Andrew D Williams
BACKGROUND: Physical inactivity ranks as a major contributing factor in the development and progression of chronic disease. Lifestyle interventions reduce the progression of chronic disease, however, compliance decreases over time and health effects only persist as long as the new lifestyle is maintained. Telephone counselling (TC) is an effective way to provide individuals with ongoing support to maintain lifestyle changes. Remote physical activity monitoring and feedback (RAMF) via interactive technologies such as activity trackers and smartphones may be a cost-effective alternative to TC, however, this comparison has not been made...
2017: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28074110/an-exploratory-study-on-the-impact-of-daily-activities-on-the-pleasure-and-physical-activity-of-older-adults
#9
Miriam Cabrita, Richel Lousberg, Monique Tabak, Hermie J Hermens, Miriam M R Vollenbroek-Hutten
BACKGROUND: Pleasure is one determinant of intrinsic motivation and yet a dimension often forgotten when promoting physical activity among the older population. In this study we investigate the relation between daily activities and physical activity, experience of pleasure, and the interaction between pleasure and physical activity in the daily lives of community-dwelling older adults. METHODS: Participants carried a hip-worn accelerometer during 30 consecutive days resulting in a total of 320 days of data collection...
2017: European Review of Aging and Physical Activity
https://www.readbyqxmd.com/read/27931188/measuring-moderate-intensity-walking-in-older-adults-using-the-actigraph-accelerometer
#10
Anthony Barnett, Daniel van den Hoek, David Barnett, Ester Cerin
BACKGROUND: Accelerometry is the method of choice for objectively assessing physical activity in older adults. Many studies have used an accelerometer count cut point corresponding to 3 metabolic equivalents (METs) derived in young adults during treadmill walking and running with a resting metabolic rate (RMR) assumed at 3.5 mL · kg(-1) · min(-1) (corresponding to 1 MET). RMR is lower in older adults; therefore, their 3 MET level occurs at a lower absolute energy expenditure making the cut point derived from young adults inappropriate for this population...
December 8, 2016: BMC Geriatrics
https://www.readbyqxmd.com/read/27895473/calf-raise-senior-a-new-test-for-assessment-of-plantar-flexor-muscle-strength-in-older-adults-protocol-validity-and-reliability
#11
Helô-Isa André, Filomena Carnide, Edgar Borja, Fátima Ramalho, Rita Santos-Rocha, António P Veloso
PURPOSE: This study aimed to develop a new field test protocol with a standardized measurement of strength and power in plantar flexor muscles targeted to functionally independent older adults, the calf-raise senior (CRS) test, and also evaluate its reliability and validity. PATIENTS AND METHODS: Forty-one subjects aged 65 years and older of both sexes participated in five different cross-sectional studies: 1) pilot (n=12); 2) inter- and intrarater agreement (n=12); 3) construct (n=41); 4) criterion validity (n=33); and 5) test-retest reliability (n=41)...
2016: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/27890482/dietary-nitrate-does-not-affect-physical-activity-or-outcomes-in-healthy-older-adults-in-a-randomized-cross-over-trial
#12
Mario Siervo, Clio Oggioni, Djordje G Jakovljevic, Michael Trenell, John C Mathers, David Houghton, Carlos Celis-Morales, Ammar W Ashor, Alan Ruddock, Mayur Ranchordas, Markos Klonizakis, Elizabeth A Williams
Although dietary nitrate (NO3(-)) ingestion appears to enhance exercise capacity and performance in young individuals, inconclusive findings have been reported in older people. Therefore, we conducted a double-blind, crossover randomized clinical trial using beetroot juice in older healthy participants, who were classified as normal weight and overweight. We tested whether consumption of beetroot juice (a rich source of NO3(-)) for 1 week would increase nitric oxide bioavailability via the nonenzymatic pathway and enhance (1) exercise capacity during an incremental exercise test, (2) physical capability, and (3) free-living physical activity...
December 2016: Nutrition Research
https://www.readbyqxmd.com/read/27798733/a-novel-accelerometer-based-method-to-describe-day-to-day-exposure-to-potentially-osteogenic-vertical-impacts-in-older-adults-findings-from-a-multi-cohort-study
#13
K Hannam, K C Deere, A Hartley, E M Clark, J Coulson, A Ireland, C Moss, M H Edwards, E Dennison, T Gaysin, R Cooper, A Wong, J S McPhee, C Cooper, D Kuh, J H Tobias
This observational study assessed vertical impacts experienced in older adults as part of their day-to-day physical activity using accelerometry and questionnaire data. Population-based older adults experienced very limited high-impact activity. The accelerometry method utilised appeared to be valid based on comparisons between different cohorts and with self-reported activity. INTRODUCTION: We aimed to validate a novel method for evaluating day-to-day higher impact weight-bearing physical activity (PA) in older adults, thought to be important in protecting against osteoporosis, by comparing results between four cohorts varying in age and activity levels, and with self-reported PA levels...
March 2017: Osteoporosis International
https://www.readbyqxmd.com/read/27760774/associations-of-accelerometry-assessed-and-self-reported-physical-activity-and-sedentary-behavior-with-all-cause-and-cardiovascular-mortality-among-us-adults
#14
Kelly R Evenson, Fang Wen, Amy H Herring
The US physical activity (PA) recommendations were based primarily on studies in which self-reported data were used. Studies that include accelerometer-assessed PA and sedentary behavior can contribute to these recommendations. In the present study, we explored the associations of PA and sedentary behavior with all-cause and cardiovascular disease (CVD) mortality in a nationally representative sample. Among the 2003-2006 National Health and Nutrition Examination Survey cohort, 3,809 adults 40 years of age or older wore an accelerometer for 1 week and self-reported their PA levels...
November 1, 2016: American Journal of Epidemiology
https://www.readbyqxmd.com/read/27754973/using-symbolic-aggregate-approximation-sax-to-visualize-activity-transitions-among-older-adults
#15
Amal A Wanigatunga, Paul V Nickerson, Todd M Manini, Parisa Rashidi
The objective of this analysis was to apply symbolic aggregate approximation (SAX) time-series analysis to accelerometer data for activity pattern visualization stratified by self-reported mobility difficulty. A total of 2393 (71.6  ±  7.9 years old) participants wore an accelerometer on the hip (4  +  d; 10  +  h) during the national health and nutrition examination survey (NHANES), a biannual series of health assessments of the US population. One minute epoch data was used to perform SAX, which converted accelerometry time series data into four activity levels...
November 2016: Physiological Measurement
https://www.readbyqxmd.com/read/27714561/estimation-of-temporal-gait-events-from-a-single-accelerometer-through-the-scale-space-filtering-idea
#16
Iván González, Jesús Fontecha, Ramón Hervás, José Bravo
The purpose of this paper is to develop an accelerometry system capable of performing gait event demarcation and calculation of temporal parameters using a single waist-mounted device. Particularly, a mobile phone positioned over the L2 vertebra is used to acquire trunk accelerations during walking. Signals from the acceleration magnitude and the vertical acceleration are smoothed through different filters. Cut-off points between filtered signals as a result of convolving with varying levels of Gaussian filters and other robust features against temporal variation and noise are used to identify peaks that correspond to gait events...
December 2016: Journal of Medical Systems
https://www.readbyqxmd.com/read/27705093/physical-activity-and-adiposity-among-the-older-adults-of-the-evident-study
#17
José I Recio-Rodríguez, Natalia Sanchez-Aguadero, Emiliano Rodríguez-Sánchez, Vicente Martinez-Vizcaino, Carlos Martin-Cantera, Maria C Patino-Alonso, Jose A Maderuelo-Fernandez, Manuel A Gómez-Marcos, Luis Garcia-Ortiz
This study determined the relationship between self-reported and objective measurements of physical activity with adiposity markers in a randomly sample of community-dwelling older adults. The sample included 439 individuals over 65 years (age 71.1±7.8; 54.2% women). Regular physical activity information was collected using self-reported (questionnaire, 7-day-PAR) and objective measurements (accelerometer ActiGraph GT3X) over 7 days. Anthropometric parameters included body mass index, body fat percentage and waist circumference...
October 5, 2016: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/27668146/relationship-between-accelerometer-measured-activity-and-self-reported-or-performance-based-function-in-older-adults-with-severe-aortic-stenosis
#18
Yufei Tang, Philip Green, Mathew Maurer, Rosa Lazarte, Jonathan Rubin Kuzniecky, Ming Yang Hung, Melissa Garcia, Susheel Kodali, Tamara Harris
In older adults with aortic stenosis, we evaluated whether accelerometer-measured physical activity provides distinct clinical information apart from self-reported surveys or performance-based function tests. We employed wrist-mounted accelerometry in 52 subjects with severe aortic stenosis prior to transcatheter aortic valve replacement (TAVR). Daily daytime activity was estimated using the maximum 10 h of daily accelerometer-measured activity (M10) reported in activity counts. Subjects completed baseline surveys (New York Heart Association (NYHA), Short Form 12 (SF12), Kansas City Cardiomyopathy Questionnaire (KCCQ), EuroQol-5D (EQ-5D), Revised Life Orientation Test (LOT-R), Life Space, Detailed Activity Form) and performance-based function tests (Short Physical Performance Battery, 6-min walk test distance, grip strength) to estimate functional status...
December 2015: Current Geriatrics Reports
https://www.readbyqxmd.com/read/27568165/predictors-of-change-in-physical-function-in-older-adults-in-response-to-long-term-structured-physical-activity-the-life-study
#19
Andrew S Layne, Fang-Chi Hsu, Steven N Blair, Shyh-Huei Chen, Jennifer Dungan, Roger A Fielding, Nancy W Glynn, Alexandra M Hajduk, Abby C King, Todd M Manini, Anthony P Marsh, Marco Pahor, Christine A Pellegrini, Thomas W Buford
OBJECTIVES: To evaluate the extent of variability in functional responses in participants in the Lifestyle Interventions and Independence for Elders (LIFE) study and to identify the relative contributions of intervention adherence, physical activity, and demographic and health characteristics to this variability. DESIGN: Secondary analysis. SETTING: Multicenter institutions. PARTICIPANTS: A volunteer sample (N=1635) of sedentary men and women aged 70 to 89 years who were able to walk 400m but had physical limitations, defined as a Short Physical Performance Battery (SPPB) score of ≤9...
January 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27513333/an-activity-index-for-raw-accelerometry-data-and-its-comparison-with-other-activity-metrics
#20
Jiawei Bai, Chongzhi Di, Luo Xiao, Kelly R Evenson, Andrea Z LaCroix, Ciprian M Crainiceanu, David M Buchner
Accelerometers have been widely deployed in public health studies in recent years. While they collect high-resolution acceleration signals (e.g., 10-100 Hz), research has mainly focused on summarized metrics provided by accelerometers manufactures, such as the activity count (AC) by ActiGraph or Actical. Such measures do not have a publicly available formula, lack a straightforward interpretation, and can vary by software implementation or hardware type. To address these problems, we propose the physical activity index (AI), a new metric for summarizing raw tri-axial accelerometry data...
2016: PloS One
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