Research Database

1685 results for "Research Database"

Exploring the challenges in obtaining physical activity data from women using hip-worn accelerometers

  • Published on May, 2017

Abstract: Quality objective physical activity data are required to inform physical activity-based health improvement initiatives, however, various challenges undermine acquisition of such data. We examined the efficacy and challenges of a hip-worn accelerometry protocol in women. Specific objectives included determining accelerometer-wear-compliance rates and understanding the barriers and acceptability of wearing ...


Identification of Body Balance Deterioration of Gait in Women Using Accelerometers

  • Published on 2020

Background: This study presents a simple methodology for the evaluation of gait with accelerometers, for rapid and simple application, in which we employ current balance tests in clinical practice (Timed Up and Go, Chair Stand Test and Six-Minute Walk Test). The aim was to determine whether the accelerometric valuation of ...


The Effect of Physical Activity Bout Patterns on Metabolic Syndrome Risk Factors in Youth: National Health and Nutrition Examination Survey 2003–2006

  • Published on 2019

Background: Research suggests that accumulating moderate to vigorous physical activity (MVPA) in longer continuous bouts may have beneficial effects on metabolic syndrome risk factors. The objective of this study was to examine the independent associations of MVPA bout patterns on metabolic syndrome risk factors among a nationally representative sample of ...


Validity of six consumer-level activity monitors for measuring steps in patients with chronic heart failure

  • Published on Sep 13, 2019

Introduction: Although numerous activity trackers have been validated in healthy populations, validation is lacking in chronic heart failure patients who normally walk at a slower pace, making it difficult for researchers and clinicians to implement activity monitors during physical activity interventions. Methods: Six consumer-level activity monitors were validated in a 3...


A Randomized, Double-Blind, Placebo-Controlled Study of Pulsed, Inhaled Nitric Oxide in Subjects at Risk of Pulmonary Hypertension Associated With Pulmonary Fibrosis

  • Published on February 21, 2020

Background: The interstitial lung diseases include a variety of disorders, many of which are characterized by fibrotic changes (fILD). Of the fILDs, Idiopathic pulmonary fibrosis is the most common. Pulmonary hypertension (PH) frequently complicates fILD and is associated with impaired functional capability, lower physical activity, and significantly reduced life expectancy. ...


Skeletal muscle LINE-1 ORF1 mRNA is higher in older humans but decreases with endurance exercise and is negatively associated with higher physical activity

  • Published on August 1, 2019

Abstract The long interspersed nuclear element-1 (L1) is a retrotransposon that constitutes 17% of the human genome and is associated with various diseases and aging. Estimates suggest that ~100 L1 copies are capable of copying and pasting into other regions of the genome. Herein, we examined if skeletal muscle L1 markers are ...


Time Drift Considerations When Using GPS and Accelerometers

  • Published on August 6, 2019

Purpose To investigate potential time drift between devices when using Global Positioning Systems (GPS) and accelerometers in field-based research. Methods Six Qstarz BT-Q1000XT GPS trackers, activPAL3 accelerometers, and ActiGraph GT3X+ and GT3X accelerometers were tested over 1–3 waves, each lasting 9–14 days. Once per day an event marker was ...


Progressive dry to humid hyperthermia alters exercise cerebral blood flow

  • Published on July 31, 2019

Introduction Exercising in hot conditions may increase the risk for exertional heat-related illness due to reduction in cerebral blood flow (CBF); however, the acute effect of exercise-induced changes on CBF during compensable and uncompensable heat stress remain unclear. We tested the hypothesis that exercising in hot dry and humid conditions ...


Reliability and Validity of the Cancer Prevention Study-3 Physical Activity Survey Items

  • Published on July 30, 2019

This study examined the test-retest reliability and criterion validity of light (LPA), moderate (MPA), vigorous (VPA), and moderate-to-vigorous (MVPA) physical activity survey items in a subset of participants from a large prospective cohort. Participants included 423 women and 290 men aged 31–72 years in the Cancer Prevention Study-3 (CPS-3). Information on physical activity (...