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Activity trackers

Daniel V Gaz, Thomas M Rieck, Nolan W Peterson, Jennifer A Ferguson, Darrell R Schroeder, Heather A Dunfee, Jill M Henderzahs-Mason, Philip T Hagen
PURPOSE: Clinicians and fitness professionals are increasingly recommending the use of activity trackers. This study compares commercially available activity tracking devices for step and distance accuracy in common exercise settings. DESIGN: Cross sectional. SETTING: Rochester, Minnesota. PARTICIPANTS: Thirty-two men (n = 10) and women (n = 22) participated in the study. MEASURES: Researchers manually counted steps and measured distance for all trials, while participants wore 6 activity tracking devices that measured steps and distance...
January 1, 2018: American Journal of Health Promotion: AJHP
Leonie A Krops, Rienk Dekker, Jan H B Geertzen, Pieter U Dijkstra
INTRODUCTION: Physically disabled people are less physically active compared with healthy people. Existing physical activity (PA) interventions are limited in reach, since they are primarily rehabilitation or school based. The current study aims to develop a community-based intervention for stimulating PA in hard-to-reach physically disabled people. METHODS AND ANALYSIS: To systematically develop a PA-stimulating intervention, intervention mapping (six steps) was applied...
March 16, 2018: BMJ Open
Ivone Leong
No abstract text is available yet for this article.
March 16, 2018: Nature Reviews. Endocrinology
Nathalie M Berninger, Gill A Ten Hoor, Guy Plasqui
Sedentary behavior (SB) has detrimental consequences and cannot be compensated for through moderate-to-vigorous physical activity (PA). In order to understand and mitigate SB, tools for measuring and monitoring SB are essential. While current direct-to-customer wearables focus on PA, the VitaBit validated in this study was developed to focus on SB. It was tested in a laboratory and in a free-living condition, comparing it to direct observation and to a current best-practice device, the ActiGraph, on a minute-by-minute basis...
March 15, 2018: Sensors
Frank L Schwartz, Cynthia R Marling, Razvan C Bunescu
Development of truly useful wearable physiologic monitoring devices for use in diabetes management is still in its infancy. From wearable activity monitors such as fitness trackers and smart watches to contact lenses measuring glucose levels in tears, we are just at the threshold of their coming use in medicine. Ultimately, such devices could help to improve the performance of sense-and-respond insulin pumps, illuminate the impact of physical activity on blood glucose levels, and improve patient safety. This is a summary of our experience attempting to use such devices to enhance continuous glucose monitoring-augmented insulin pump therapy...
March 1, 2018: Journal of Diabetes Science and Technology
Alexa M Bouts, Lauren Brackman, Elizabeth Martin, Adam M Subasic, Edward S Potkanowicz
People use their smartphones for everything from web browsing to tracking fitness metrics. However, it is unclear whether smartphone-based apps that use photoplethysmography to measure heart rate are an accurate or valid measure of exercise intensity. Purpose was to determine the accuracy and validity of two iOS-based heart rate monitors, Runtastic Heart Rate Monitor and Pulse Tracker PRO by Runtastic (Runtastic) and Instant Heart Rate+: Heart Rate and Pulse Monitor by Azumio (Instant Heart Rate), when compared to the electrocardiogram (ECG) and Polar® T31 uncoded heart rate monitor from moderate to vigorous intensity exercise...
2018: International Journal of Exercise Science
Jennifer A Bunn, James W Navalta, Charles J Fountaine, Joel D Reece
Wearable physical activity trackers are a popular and useful method to collect biometric information at rest and during exercise. The purpose of this systematic review was to summarize recent findings of wearable devices for biometric information related to steps, heart rate, and caloric expenditure for several devices that hold a large portion of the market share. Searches were conducted in both PubMed and SPORTdiscus. Filters included: humans, within the last 5 years, English, full-text, and adult 19+ years...
2018: International Journal of Exercise Science
Ri-Zhen Huang, Xiao-Chao Huang, Bin Zhang, Hai-Yang Jia, Zhi-Xin Liao, Heng-Shan Wang
BACKGROUND: Hepatocellular carcinoma (HCC) is the leading cause of cancer death, and novel chemotherapeutic drugs for treating HCC are urgently needed. 16-O-caffeoyl-16-hydroxylhexadecanoic acid (CHHA) is a new phenylpropanoid isolated by our group from Euphorbia nematocypha which is commonly used to treat solid tumors. However, the underlying mechanisms responsible for the CHHA-induced apoptosis in cancer cells, particularly in HCC, remain unknown. PURPOSE: In the present work, we evaluated the growth inhibitory effect of CHHA on HCC cells and explored the underlying molecular mechanisms...
March 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
He Zhang, Xue Diao, Na Li, Chenglan Liu
Fumonisins are a type of mycotoxin produced by Fusarium spp., mainly F. proliferatum and F. vertieilliodes. Fumonisins represent a potential hazard to the health of animals and humans. Autophagic cell death is a method of programed cell death called type II PCD, which has complicated connections with apoptosis. Our results indicated that FB1 substantially inhibited cell viability and was cytotoxic to hemocytes of Ostrinia furnacalis in a time and concentration dependent manner. We verified the activation of FB1 -induced autophagy according to MDC staining, Lyso-Tracker Red probe staining, TEM observation and atg8-PE expression levels...
March 1, 2018: Toxicon: Official Journal of the International Society on Toxinology
Charlotte L Brakenridge, Genevieve N Healy, Elisabeth Ah Winkler, Brianna S Fjeldsoe
BACKGROUND: Wearable activity trackers are now a common feature of workplace wellness programs; however, their ability to impact sitting time (the behavior in which most of the desk-based workday is spent) is relatively unknown. This study evaluated the LUMOback, an activity tracker that targets sitting time, as part of a cluster-randomized workplace sitting intervention in desk-based office workers. OBJECTIVE: Study objectives were to explore: (1) office workers' self-directed LUMOback use, (2) individual-level characteristics associated with LUMOback use, (3) the impact of LUMOback use on activity and sitting behaviors, and (4) office workers' perceived LUMOback acceptability...
March 2, 2018: Interactive Journal of Medical Research
Michał Bronikowski, Małgorzata Bronikowska, Janusz Maciaszek, Agata Glapa
BACKGROUND: Decline in physical activity (PA), specifically in adolescents raises concerns. Setting goals and strategies are often used to increase the level of moderate-to-vigorous physical activity (MVPA), recently introducing also modern technological devices for achieving different goals. The aim of this study was to investigate the effectiveness of two different goal strategies in increasing PA of youth. It was expected that there would be positive relationships between support and goal strategy which would contribute to increase MVPA...
March 2018: Journal of Sports Medicine and Physical Fitness
Jie-Eun Lee, Dong Hwa Lee, Tae Jung Oh, Kyoung Min Kim, Sung Hee Choi, Soo Lim, Young Joo Park, Do Joon Park, Hak Chul Jang, Jae Hoon Moon
BACKGROUND: Thyrotoxicosis is a common disease caused by an excess of thyroid hormones. The prevalence of thyrotoxicosis about 2% and 70-90% of thyrotoxicosis cases are caused by Graves' disease, an autoimmune disease, which has a high recurrence rate when treated with antithyroid drugs such as methimazole or propylthiouracil. The clinical symptoms and signs of thyrotoxicosis include palpitation, weight loss, restlessness, and difficulty sleeping. Although these clinical changes in thyrotoxicosis can be detected by currently available wearable activity trackers, there have been few trials of the clinical application of wearable devices in patients with thyrotoxicosis...
February 21, 2018: JMIR Research Protocols
Stamatelopoulou Asimina, D Chapizanis, S Karakitsios, P Kontoroupis, D N Asimakopoulos, T Maggos, D Sarigiannis
Nowadays, the advancement of mobile technology in conjunction with the introduction of the concept of exposome has provided new dynamics to the exposure studies. Since the addressing of health outcomes related to environmental stressors is crucial, the improvement of exposure assessment methodology is of paramount importance. Towards this aim, a pilot study was carried out in the two major cities of Greece (Athens, Thessaloniki), investigating the applicability of commercially available fitness monitors and the Moves App for tracking people's location and activities, as well as for predicting the type of the encountered location, using advanced modeling techniques...
February 20, 2018: Environmental Monitoring and Assessment
Dorien Simons, Ilse De Bourdeaudhuij, Peter Clarys, Katrien De Cocker, Corneel Vandelanotte, Benedicte Deforche
BACKGROUND: Physical activity (PA) levels are problematic in lower-educated working young adults (18-26 years). To promote PA, smartphone apps have great potential, but there is no evidence for their effectiveness in this population. To increase the likelihood that a newly developed app will be effective, formative research and user testing are required. OBJECTIVE: The aim of this study was to describe the development, usability, acceptability, and feasibility of a new theory- and evidence-based smartphone app to promote an active lifestyle in lower-educated working young adults...
February 20, 2018: JMIR MHealth and UHealth
Talko B Dijkhuis, Frank J Blaauw, Miriam W van Ittersum, Hugo Velthuijsen, Marco Aiello
Living a sedentary lifestyle is one of the major causes of numerous health problems. To encourage employees to lead a less sedentary life, the Hanze University started a health promotion program. One of the interventions in the program was the use of an activity tracker to record participants' daily step count. The daily step count served as input for a fortnightly coaching session. In this paper, we investigate the possibility of automating part of the coaching procedure on physical activity by providing personalized feedback throughout the day on a participant's progress in achieving a personal step goal...
February 19, 2018: Sensors
Christoph Höchsmann, Raphael Knaier, Jennifer Eymann, Jonas Hintermann, Denis Infanger, Arno Schmidt-Trucksäss
PURPOSE: To examine the validity of popular smartphone accelerometer applications and a consumer activity wristband compared to a widely-used research accelerometer while assessing the impact of the phone's position on the accuracy of step detection. METHODS: Twenty volunteers from two different age groups (Group A: 18-25 years, n=10; Group B 45-70 years, n=10) were equipped with three iPhone SE smartphones (placed in pants pocket, shoulder bag, and backpack), one Samsung Galaxy S6 Edge (pants pocket), one Garmin Vivofit 2 wristband, and two ActiGraph wGTX+ devices (worn at wrist and hip) while walking on a treadmill (1...
February 20, 2018: Scandinavian Journal of Medicine & Science in Sports
Daniel Steffens, Jane Young, Paula R Beckenkamp, James Ratcliffe, Freya Rubie, Nabila Ansari, Neil Pillinger, Michael Solomon
BACKGROUND: There is a need for evidence of the effectiveness of pre-operative exercise for patients undergoing major cancer surgery; however, recruitment to such trials can be challenging. The PrE-operative Physical Activity (PEPA) Trial will establish the feasibility and acceptability of a pre-operative exercise programme aimed to improve patient outcomes after cytoreductive surgery and pelvic exenteration. The secondary aim is to obtain pilot data on the likely difference in key outcomes (post-operative complications, length of hospital stay, post-operative functional capacity and quality of life) to inform the sample size calculation for the substantive randomised clinical trial...
February 17, 2018: Trials
Dina H Griauzde, Jeffrey T Kullgren, Brad Liestenfeltz, Caroline Richardson, Michele Heisler
Background: Rates of participation in Diabetes Prevention Programs (DPPs) are low. This may be due, in part, to low levels of autonomous motivation (i.e., motivation that arises from internal sources and sustains healthy behaviors over time) to prevent type 2 diabetes (T2DM) among many individuals with prediabetes. Mobile health (mHealth) technologies that incorporate principles from the Self-Determination Theory offer an effective and scalable approach to increase autonomous motivation levels...
2018: Pilot and Feasibility Studies
Cristina Colón-Semenza, Nancy K Latham, Lisa M Quintiliani, Terry D Ellis
BACKGROUND: Long-term engagement in exercise and physical activity mitigates the progression of disability and increases quality of life in people with Parkinson disease (PD). Despite this, the vast majority of individuals with PD are sedentary. There is a critical need for a feasible, safe, acceptable, and effective method to assist those with PD to engage in active lifestyles. Peer coaching through mobile health (mHealth) may be a viable approach. OBJECTIVE: The purpose of this study was to develop a PD-specific peer coach training program and a remote peer-mentored walking program using mHealth technology with the goal of increasing physical activity in persons with PD...
February 15, 2018: JMIR MHealth and UHealth
Sheridan Miyamoto, Madan Dharmar, Sarina Fazio, Yajarayma Tang-Feldman, Heather M Young
BACKGROUND: Chronic diseases, including diabetes mellitus, are the leading cause of mortality and disability in the United States. Current solutions focus primarily on diagnosis and pharmacological treatment, yet there is increasing evidence that patient-centered models of care are more successful in improving and addressing chronic disease outcomes. OBJECTIVE: The objective of this clinical trial is to evaluate the impact of a mobile health (mHealth) enabled nurse health coaching intervention on self-efficacy among adults with type-2 diabetes mellitus...
February 15, 2018: JMIR Research Protocols
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