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"Accelerometer" "falls"

J B Bartholomew, N M Golaszewski, E Jowers, E Korinek, G Roberts, A Fall, S Vaughn
While increased opportunities for physical activity (PA) are a critical, public health need for children, school-based interventions often place teachers in the position to choose between PA and time spent on academic lessons. Active learning is designed to overcome this by combining PA with academic material. Moreover, teachers are likely to be more responsive to change in academic-related outcomes than in PA. This study utilizes a large, cluster randomized control trial in which student attention, or time on task (TOT) and accelerometer-based PA is assessed in conjunction with active learning...
February 20, 2018: Preventive Medicine
B Hu, P C Dixon, J V Jacobs, J T Dennerlein, J M Schiffman
The aim of this study was to investigate if a machine learning algorithm utilizing triaxial accelerometer, gyroscope, and magnetometer data from an inertial motion unit (IMU) could detect surface- and age-related differences in walking. Seventeen older (71.5 ± 4.2 years) and eighteen young (27.0 ± 4.7 years) healthy adults walked over flat and uneven brick surfaces wearing an inertial measurement unit (IMU) over the L5 vertebra. IMU data were binned into smaller data segments using 4-s sliding windows with 1-s step lengths...
January 12, 2018: Journal of Biomechanics
Saliu Balogun, Tania Winzenberg, Karen Wills, David Scott, Graeme Jones, Michele Callisaya, Dawn Aitken
AIMS: To describe the longitudinal associations between physiological falls risk, and between-person and within-person effects of 25-hydroxyvitamin D (25OHD), physical activity (PA), knee pain and dysfunction in community-dwelling older people. METHODS: Data for 1053 participants (51% women; mean age 63 ± 7.4 years) studied at baseline, 2.5, 5, and 10 years were analysed. Falls risk (Z-score) was measured using the Physiological Profile Assessment. Knee pain and dysfunction were assessed using the Western Ontario and McMaster Universities Osteoarthritis index (WOMAC)...
February 5, 2018: Experimental Gerontology
Jeffrey M Hausdorff, Inbar Hillel, Shiran Shustak, Silvia Del Din, Esther M J Bekkers, Elisa Pelosin, Freek Nieuwhof, Lynn Rochester, Anat Mirelman
Background: Recent work demonstrated that the gait of people with mild cognitive impairment (MCI) differs from that of age-matched controls and, in general, that walking ability, as measured in the clinic, does not necessarily reflect actual, daily performance. We evaluated if the quantity and quality of everyday walking (ie, community ambulation) differs in older adults with MCI, compared to age-matched controls. Methods: Inclusion criteria included: age 65-90 years, able to walk at least 5 minutes unassisted, and ≥2 falls in the past 6 months...
October 8, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Ivan Pang, Yoshiro Okubo, Daina Sturnieks, Stephen R Lord, Matthew A Brodie
BACKGROUND AND PURPOSE: Falls among older people are a serious health issue. Remote detection of near falls may provide a new way to identify older people at high risk of falling. This could enable exercise and fall prevention programs to target the types of near falls experienced and the situations that cause near falls before fall-related injuries occur. The purpose of this systematic review was to summarize and critically examine the evidence regarding the detection of near falls (slips, trips, stumbles, missteps, incorrect weight transfer, or temporary loss of balance) using wearable devices...
January 30, 2018: Journal of Geriatric Physical Therapy
Silvia Del Din, Brook Galna, Alan Godfrey, Esther Mj Bekkers, Elisa Pelosin, Freek Nieuwhof, Anat Mirelman, Jeffrey M Hausdorff, Lynn Rochester
Background: Falls are associated with gait impairments in older adults (OA) and Parkinson's disease (PD). Current approaches for evaluating falls risk are based on self-report or one-time assessment and may be suboptimal. Wearable technology allows gait to be measured continuously in free-living conditions. The aim of this study was to explore generic and specific associations in free-living gait in fallers and non-fallers with and without PD. Methods: 277 fallers (155 PD, 122 older adults (OA)) who fell twice or more in the previous 6 months and 65 non-fallers (15 PD, 50 OA) were tested...
December 30, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Valerie Carson, Mark S Tremblay, Sebastien F M Chastin
BACKGROUND: Sleep duration, sedentary behaviour, and physical activity are three co-dependent behaviours that fall on the movement/non-movement intensity continuum. Compositional data analyses provide an appropriate method for analyzing the association between co-dependent movement behaviour data and health indicators. The objectives of this study were to examine: (1) the combined associations of the composition of time spent in sleep, sedentary behaviour, light-intensity physical activity (LPA), and moderate- to vigorous-intensity physical activity (MVPA) with adiposity indicators; and (2) the association of the time spent in sleep, sedentary behaviour, LPA, or MVPA with adiposity indicators relative to the time spent in the other behaviours in a representative sample of Canadian preschool-aged children...
November 20, 2017: BMC Public Health
Brian Suffoletto, Pedram Gharani, Tammy Chung, Hassan Karimi
BACKGROUND: Phone sensors could be useful in assessing changes in gait that occur with alcohol consumption. This study determined (1) feasibility of collecting gait-related data during drinking occasions in the natural environment, and (2) how gait-related features measured by phone sensors relate to estimated blood alcohol concentration (eBAC). METHODS: Ten young adult heavy drinkers were prompted to complete a 5-step gait task every hour from 8pm to 12am over four consecutive weekends...
February 2018: Gait & Posture
K Turunen, L Aaltonen, J Kumpumäki, E Portegijs, S Keikkala, M-L Kinnunen, T Finni, S Sipilä, R Nikander
BACKGROUND: Physical activity (PA) decreases during hospitalization. In particular, the amount of PA engaged in by older people who are hospitalized following musculoskeletal injury is likely to be limited for months after discharge home. Given the importance of an active lifestyle for their recovery and the prevention of future adverse outcomes, there is clearly a need for interventions to increase PA. This article describes the protocol of a randomized controlled trial set up to investigate the effects of a physical activity oriented home rehabilitation program (ProPA) on PA and the restoration of mobility in community-dwelling older people...
November 21, 2017: BMC Musculoskeletal Disorders
José Marmeleira, Soraia Ferreira, Armando Raimundo
Physical activity and physical fitness are important for health, functional mobility and performance of everyday activities. To date, little attention has been given to physical activity and physical fitness among nursing home residents with cognitive impairment. Therefore, the main aim of this study was to examine physical activity behavior and physical fitness of institutionalized older adults with cognitive impairment and to investigate their interrelations. Forty-eight older adults with cognitive impairment (83...
December 15, 2017: Experimental Gerontology
Massimo W Rivolta, Roberto Sassi
Falling in elderly is a worldwide major problem and it can lead to severe injuries or death. Despite the effort made to ensure home environments safe and foster healthy lifestyles, it is still necessary to provide methodologies that can be used at home for detect risk factors associated with falls. In this study, we proposed a new simple non-linear model, i.e., Linear-Sigmoidal model (LS), easy to fit and simple to interpret, used to model accelerometer features and outcome of the clinical scale Tinetti (clinical scale for fall risk prediction)...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Andreas Ejupi, Chantel Galang, Omar Aziz, Edward J Park, Stephen Robinovitch
GOAL: Falls are a major source of morbidity in older adults, and 50% of older adults who fall cannot rise independently after falling. Wearable sensor-based fall detection devices may assist in preventing long lies after falls. The goal of this study was to determine the accuracy of a novel wavelet-based approach to automatically detect falls based on accelerometer and barometric pressure sensor data. METHODS: Participants (n=15) mimicked a range of falls, near falls, and activities of daily living (ADLs) while wearing accelerometer and barometric pressure sensors on the lower back, chest, wrists and thighs...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Prayook Jatesiktat, Wei Tech Ang
As the world population is growing toward an aging society, elderly fall becomes a serious problem. Automatic fall detection and alert systems could shorten their waiting time after a fall and mitigate its physical and mental negative consequences. This work proposes a method that integrates a 3-axis accelerometer and a barometer on a wrist-worn device for the fall detection task. The method focuses on the use of noisy signals from a barometer in both pre-processing steps and feature extractions. A use of free falling events to address the lack of training data in a learning process is also explored...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Nicholas Shawen, Luca Lonini, Chaithanya Krishna Mummidisetty, Ilona Shparii, Mark V Albert, Konrad Kording, Arun Jayaraman
BACKGROUND: Automatically detecting falls with mobile phones provides an opportunity for rapid response to injuries and better knowledge of what precipitated the fall and its consequences. This is beneficial for populations that are prone to falling, such as people with lower limb amputations. Prior studies have focused on fall detection in able-bodied individuals using data from a laboratory setting. Such approaches may provide a limited ability to detect falls in amputees and in real-world scenarios...
October 11, 2017: JMIR MHealth and UHealth
Sun-Shil Shin, Won-Gyu Yoo, Duk-Hyun An, Jae-Seop Oh, Ki-Song Kim, Tae-Ho Kim, Jong-Sang Choi
BACKGROUND: Direction changes while walking are more likely to cause a hip fracture than is falling while walking in a straight line. Trunk stability is an important contributor to safe and effective walking, and arm movements influence trunk movement while walking. However, the difference in the trunk stability during semicircular turns performed by elderly women with a light bag has not been examined. OBJECTIVE: To investigate the effects of carrying a bag on trunk stability during semicircular turns in elderly women...
September 22, 2017: Journal of Back and Musculoskeletal Rehabilitation
R Glenn Weaver, Collin A Webster, Michael W Beets, Keith Brazendale, Jessica Chandler, Lauren Schisler, Mazen Aziz
This study examined the initial effects of a participatory-based, competency-/skill-building professional development workshop for physical education (PE) teachers on the use of physical activity (PA) promotion practices (e.g., eliminating lines, small-sided games) and students' moderate-to-vigorous physical activity (MVPA). A total of 823 students (52.8% boys) wore accelerometers at baseline (fall 2015) and outcome (spring 2016) on PE and non-PE days. The System for Observing Fitness Instruction Time+ measured changes in PA promotion practices...
September 1, 2017: Health Education & Behavior: the Official Publication of the Society for Public Health Education
Anthony J Nastasi, Alka Ahuja, Vadim Zipunnikov, Eleanor M Simonsick, Luigi Ferrucci, Jennifer A Schrack
OBJECTIVE: Previous work demonstrates the consequences of falling in older adults and the potential of physical activity (PA) to reduce falls, but few studies have used accelerometer-measured PA to compare overall and time-of-day activity patterns of nonfallers, fallers, or subgroups of fallers. METHODS: In 840 participants (mean age, 66.7; s = 13.2; range, 26-97) of the Baltimore Longitudinal Study of Aging between 2007 and 2014, PA was measured objectively with Actiheart accelerometers and falling status (faller/nonfaller) was assessed during an in-person interview...
September 14, 2017: American Journal of Physical Medicine & Rehabilitation
Aihua Mao, Xuedong Ma, Yinan He, Jie Luo
Falls are a very dangerous situation especially among elderly people, because they may lead to fractures, concussion, and other injuries. Without timely rescue, falls may even endanger their lives. The existing optical sensor-based fall monitoring systems have some disadvantages, such as limited monitoring range and inconvenience to carry for users. Furthermore, the fall detection system based only on an accelerometer often mistakenly determines some activities of daily living (ADL) as falls, leading to low accuracy in fall detection...
September 13, 2017: Sensors
David M Buchner, Eileen Rillamas-Sun, Chongzhi Di, Michael J LaMonte, Stephen W Marshall, Julie Hunt, Yuzheng Zhang, Dori E Rosenberg, I-Min Lee, Kelly R Evenson, Amy H Herring, Cora E Lewis, Marcia L Stefanick, Andrea Z LaCroix
OBJECTIVES: To examine whether moderate to vigorous physical activity (MVPA) measured using accelerometry is associated with incident falls and whether associations differ according to physical function or history of falls. DESIGN: Prospective study with baseline data collection from 2012 to 2014 and 1 year of follow-up. SETTING: Women's Health Initiative participants living in the United States. PARTICIPANTS: Ambulatory women aged 63 to 99 (N = 5,545)...
November 2017: Journal of the American Geriatrics Society
Tapani Jäniskangas, Kari P K Pylkkänen, Pauli Kolisoja
OBJECTIVES: To assess the influence of grain size distribution and moisture condition on aggregates' performance as an impact attenuation layer beneath playground equipment. SETTING AND METHODS: Impact attenuation of sands and gravels was tested using a guided headform with a uniaxial accelerometer inside. The result for impact attenuation was the acceleration value of the headform measured from four different drop heights and the Head Injury Criterion (HIC) calculated from it...
July 28, 2017: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
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