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Tracking Fatigue

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https://www.readbyqxmd.com/read/28188371/the-effect-of-functional-overreaching-on-parameters-of-autonomic-heart-rate-regulation
#1
Clint R Bellenger, Rebecca L Thomson, Eileen Y Robertson, Kade Davison, Maximillian J Nelson, Laura Karavirta, Jonathan D Buckley
PURPOSE: Correlations between fatigue-induced changes in performance and maximal rate of HR increase (rHRI) may be affected by differing assessment workloads. This study evaluated the effect of assessing rHRI at different workloads on performance tracking, and compared this with HR variability (HRV) and HR recovery (HRR). METHODS: Performance [5-min cycling time trial (5TT)], rHRI (at multiple workloads), HRV and HRR were assessed in 12 male cyclists following 1 week of light training (LT), 2 weeks of heavy training (HT) and a 10-day taper (T)...
February 11, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28167303/psychological-and-lifestyle-factors-that-influence-the-serial-reporting-of-post-concussive-like-symptoms-in-a-non-concussed-population
#2
Arun Prasad Balasundaram, Josie Athens, Anthony Gerard Schneiders, Paul McCrory, Stephen John Sullivan
BACKGROUND: Symptoms related to concussion are generally found to be non-specific in nature as they are also reported by non-concussed individuals. What is currently not known is whether the symptoms vary over time, and whether they are also influenced by a multitude of factors. OBJECTIVE: To investigate the potential influence of psychological, lifestyle, and situational factors on the change in postconcussion-like symptoms reported over seven consecutive days in a cohort of normal individuals...
February 3, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28156607/yoga-program-for-patients-with-brain-tumors-undergoing-radiotherapy-xrt-and-their-family-caregivers
#3
Smith Mallaiah, Anita Mahajan, Terri S Armstrong, Shiao-Pei S Weathers, Kathryn E Moss, Nazli Goktepe, Amy Spelman, Lorenzo Cohen
: 200 Background: The role of behavioral medicine in the symptom management of glioma patients is largely unknown. Moreover, although the literature revealed that family caregivers are at risk of physical and psychological burden, the needs of caregivers generally remain unaddressed. The purpose of this study was to establish feasibility and preliminary efficacy of a couple-based Yoga (CBY) intervention in glioma patients and their caregivers targeting QOL outcomes. METHODS: This small, single-arm pilot trial included adults with low and high grade glioma undergoing XRT and their family caregivers...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28150503/yoga-program-for-high-grade-glioma-patients-undergoing-radiotherapy-and-their-family-caregivers
#4
Kathrin Milbury, Smitha Mallaiah, Anita Mahajan, Terri Armstrong, Shioa-Pei Weathers, Kathryn E Moss, Nazli Goktepe, Amy Spelman, Lorenzo Cohen
BACKGROUND: Despite their high symptom burden and poor prognosis, evidence-based supportive care interventions for adults with high-grade glioma (HGG) and their caregivers are lacking. Thus, we aimed to establish feasibility of a patient-caregiver dyadic yoga program (DYP) for newly diagnosed HGG patients and their family caregivers targeting quality-of-life (QOL) outcomes. METHOD: In this single-arm pilot trial, dyads participated in a 12-session DYP program across the course of patients' radiotherapy...
January 1, 2017: Integrative Cancer Therapies
https://www.readbyqxmd.com/read/28129271/fatigue-failure-in-extra-articular-proximal-tibia-fractures-locking-intramedullary-nail-versus-double-locking-plates-a-biomechanical-study
#5
Utku Kandemir, Safa Herfat, Mary Herzog, Paul Viscogliosi, Murat Pekmezci
OBJECTIVES: The goal of this study is to compare the fatigue strength of a locking intramedullary nail (LN) construct with a double locking plate (DLP) construct in comminuted proximal extra-articular tibia fractures. METHODS: Eight pairs of fresh frozen cadaveric tibias with low bone mineral density [age: 80 ± 7 (SD) years, T-score: -2.3 ± 1.2] were used. One tibia from each pair was fixed with LN, whereas the contralateral side was fixed with DLP for complex extra-articular multifragmentary metaphyseal fractures (simulating OTA 41-A3...
February 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28102449/development-of-a-new-assessment-tool-for-cervical-myelopathy-using-hand-tracking-sensor-part-2-normative-values
#6
M Abdulhadi Alagha, Mahmoud A Alagha, Eleanor Dunstan, Olaf Sperwer, Kate A Timmins, Bronek M Boszczyk
PURPOSE: To set a baseline measurement of the number of hand flexion-extension cycles and analyse the degree of motion in young healthy individuals, measured by leap motion controller (LMC), besides describing gender and dominant hand differences. METHODS: Fifty healthy participants were asked to fully grip-and-release their dominant hand as rapidly as possible for a maximum of 3 min or until subjects fatigued, while wearing a non-metal wrist splint. Participants also performed a 15-s grip-and-release test...
January 19, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28095075/a-pilot-study-using-entropy-as-a-non-invasive-assessment-of-running
#7
Andrew M Murray, Joong Hyun Ryu, John Sproule, Anthony P Turner, Phil Graham-Smith, Marco Cardinale
PURPOSE: Running performance is influenced by the interaction of biomechanical and physiological factors. Miniaturised accelerometers worn by the athlete can be used to quantify mechanical aspects of running and be used as a non-invasive tool to assess training status and progression. The aim of this study was to define and validate a method to assess running regularity and allow the estimation of an individual's V̇O2 and/or blood lactate [La]b based on data collected with accelerometers and heart rate (HR)...
January 17, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28081144/digital-health-tracking-physiomes-and-activity-using-wearable-biosensors-reveals-useful-health-related-information
#8
Xiao Li, Jessilyn Dunn, Denis Salins, Gao Zhou, Wenyu Zhou, Sophia Miryam Schüssler-Fiorenza Rose, Dalia Perelman, Elizabeth Colbert, Ryan Runge, Shannon Rego, Ria Sonecha, Somalee Datta, Tracey McLaughlin, Michael P Snyder
A new wave of portable biosensors allows frequent measurement of health-related physiology. We investigated the use of these devices to monitor human physiological changes during various activities and their role in managing health and diagnosing and analyzing disease. By recording over 250,000 daily measurements for up to 43 individuals, we found personalized circadian differences in physiological parameters, replicating previous physiological findings. Interestingly, we found striking changes in particular environments, such as airline flights (decreased peripheral capillary oxygen saturation [SpO2] and increased radiation exposure)...
January 2017: PLoS Biology
https://www.readbyqxmd.com/read/28068294/canine-olfaction-as-an-alternative-to-analytical-instruments-for-disease-diagnosis-understanding-dog-personality-to-achieve-reproducible-results
#9
Klaus Hackner, Joachim Pleil
Recent literature has touted the use of canine olfaction as a diagnostic tool for identifying pre-clinical disease status, especially cancer and infection from biological media samples. Studies have shown a wide range of outcomes, ranging from almost perfect discrimination, all the way to essentially random results. This disparity is not likely to be a detection issue; dogs have been shown to have extremely sensitive noses as proven by their use for tracking, bomb detection and search and rescue. However, in contrast to analytical instruments, dogs are subject to boredom, fatigue, hunger and external distractions...
January 9, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28064032/tmj-energy-densities-in-healthy-men-and-women
#10
L R Iwasaki, Y M Gonzalez, Y Liu, H Liu, M Markova, L M Gallo, J C Nickel
OBJECTIVE: Cartilage fatigue, due to mechanical work, may account for the early development of degenerative joint disease (DJD) in the temporomandibular joint (TMJ), and why women are three times more likely to be afflicted. This study tested for gender differences in mechanical energy densities in women and men with healthy TMJs. DESIGN: Eighteen women and eighteen men gave informed consent. Research diagnostic criteria including imaging were used to ensure that subjects' TMJs were normal, without disc displacement or signs of DJD...
January 5, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28054815/try-to-look-on-the-bright-side-children-and-adults-can-sometimes-override-their-tendency-to-prioritize-negative-faces
#11
Kristin Hansen Lagattuta, Hannah J Kramer
We used eye tracking to examine 4- to 10-year-olds' and adults' (N = 173) visual attention to negative (anger, fear, sadness, disgust) and neutral faces when paired with happy faces in 2 experimental conditions: free-viewing ("look at the faces") and directed ("look only at the happy faces"). Regardless of instruction, all age groups more often looked first to negative versus positive faces (no age differences), suggesting that initial orienting is driven by bottom-up processes. In contrast, biases in more sustained attention-last looks and looking duration-varied by age and could be modified by top-down instruction...
January 2017: Journal of Experimental Psychology. General
https://www.readbyqxmd.com/read/28048139/su-f-j-227-accuracy-of-passive-magnetic-ultrasound-needle-guidance-in-high-fidelity-conventional-and-novel-simulated-block-approach-phantoms
#12
A Johnson
PURPOSE: The objective of this research was to demonstrate accuracy of a real-time passive ultrasound magnetic needle guidance technology (NGT) and target localization algorithm using conventional anechogenic contact phantoms and a novel fluid-filled hyperechogenic phantom simulating nerve block technique. METHODS: Accuracy (mm to phantom target) was assessed by observing 35 medical practitioners (16 anesthesiologists and 19 residents) performing 560 needle procedures in high-fidelity ex vivo porcine tissue phantoms...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28028197/limited-cognitive-resources-explain-a-tradeoff-between-perceptual-and-metacognitive-vigilance
#13
Brian Maniscalco, Li Yan McCurdy, Brian Odegaard, Hakwan Lau
: Why do experimenters give subjects short breaks in long behavioral experiments? Whereas earlier studies suggest it is difficult to maintain attention and vigilance over long periods of time, it is unclear precisely what mechanisms benefit from rest after short experimental blocks. Here, we evaluate decline in both perceptual performance and metacognitive sensitivity (i.e., how well confidence ratings track perceptual decision accuracy) over time, and investigate whether characteristics of prefrontal cortical areas correlate with these measures...
December 27, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28018244/differences-in-muscle-oxygenation-perceived-fatigue-and-recovery-between-long-track-and-short-track-speed-skating
#14
Florentina J Hettinga, Marco J Konings, Chris E Cooper
Due to the technical nature of speed skating, that is affecting physiological mechanisms such as oxygenation and blood flow, this sport provides a unique setting allowing us to uncover novel mechanistic insights of the physiological response to exercise in elite middle-distance and endurance sports. The present study aimed to examine the influence of skating mode (short-track vs. long-track) on muscle oxygenation, perceived fatigue, and recovery in elite speed skating. Muscle oxygenation of 12 talented short-track speed skaters was continuously monitored during a long-track (LT) and a short-track (ST) skating time-trial of maximal effort using near-infrared spectroscopy (NIRS) on the m...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27998687/effects-of-applied-stress-ratio-on-the-fatigue-behavior-of-additively-manufactured-porous-biomaterials-under-compressive-loading
#15
Joep de Krijger, Calvin Rans, Brecht Van Hooreweder, Karel Lietaert, Behdad Pouran, Amir A Zadpoor
Additively manufactured (AM) porous metallic biomaterials are considered promising candidates for bone substitution. In particular, AM porous titanium can be designed to exhibit mechanical properties similar to bone. There is some experimental data available in the literature regarding the fatigue behavior of AM porous titanium, but the effect of stress ratio on the fatigue behavior of those materials has not been studied before. In this paper, we study the effect of applied stress ratio on the compression-compression fatigue behavior of selective laser melted porous titanium (Ti-6Al-4V) based on the diamond unit cell...
December 7, 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/27987454/patient-reported-outcomes-in-ductal-carcinoma-in-situ-a-systematic-review
#16
REVIEW
Madeleine T King, Zoë E Winters, Ivo A Olivotto, Andrew J Spillane, Boon H Chua, Christobel Saunders, A Helen Westenberg, G Bruce Mann, Petrina Burnett, Phyllis Butow, Claudia Rutherford
Ductal carcinoma in situ (DCIS) is a pre-invasive breast cancer with excellent prognosis but with potential adverse impacts of diagnosis and treatment on quality of life and other patient-reported outcomes (PROs). We undertook a systematic review to synthesise current evidence about PROs following diagnosis and treatment for DCIS. We searched five electronic databases (from database inception to November 2015), cross-referenced and contacted experts to identify studies that reported PROs after DCIS treatment...
January 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/27979832/cellular-senescence-promotes-adverse-effects-of-chemotherapy-and-cancer-relapse
#17
Marco Demaria, Monique N O'Leary, Jianhui Chang, Lijian Shao, Su Liu, Fatouma Alimirah, Kristin Koenig, Catherine Le, Natalia Mitin, Allison M Deal, Shani Alston, Emmeline C Academia, Sumner Kilmarx, Alexis Valdovinos, Boshi Wang, Alain de Bruin, Brian K Kennedy, Simon Melov, Daohong Zhou, Norman E Sharpless, Hyman Muss, Judith Campisi
: Cellular senescence suppresses cancer by irreversibly arresting cell proliferation. Senescent cells acquire a proinflammatory senescence-associated secretory phenotype. Many genotoxic chemotherapies target proliferating cells nonspecifically, often with adverse reactions. In accord with prior work, we show that several chemotherapeutic drugs induce senescence of primary murine and human cells. Using a transgenic mouse that permits tracking and eliminating senescent cells, we show that therapy-induced senescent (TIS) cells persist and contribute to local and systemic inflammation...
February 2017: Cancer Discovery
https://www.readbyqxmd.com/read/27973384/effects-of-fatiguing-constant-versus-alternating-intensity-intermittent-isometric-muscle-actions-on-maximal-torque-and-neuromuscular-responses
#18
C M Smith, T J Housh, E C Hill, K C Cochrane, N Dm Jenkins, R J Schmidt, G O Johnson
OBJECTIVE: To determine the effects of constant versus alternating applications of torque during fatiguing, intermittent isometric muscle actions of the leg extensors on maximal voluntary isometric contraction (MVIC) torque and neuromuscular responses. METHODS: Sixteen subjects performed two protocols, each consisting of 50 intermittent isometric muscle actions of the leg extensors with equal average load at a constant 60% MVIC or alternating 40 then 80% (40/80%) MVIC with a work-to-rest ratio of 6-s on and 2-s off...
December 14, 2016: Journal of Musculoskeletal & Neuronal Interactions
https://www.readbyqxmd.com/read/27925635/fatigue-detection-using-phase-space-warping
#19
Abdullatif Alwasel, Marcus Yung, Eihab Abdel-Rahman, Richard P Wells, Carl T Haas
A novel application of Phase-Space Warping (PSW) method to detect fatigue in the musculoskeletal system is presented. Experimental kinematic, force, and physiological signals are used to produce a fatigue metric. The metric is produced using time-delay embedding and PSW methods. Results showed that by using force and kinematic signals, an overall estimate of the muscle group state can be achieved. Further, when using electromyography (EMG) signals the fatigue metric can be used as a tool to evaluate muscles activation and load sharing patterns for individual muscles...
December 7, 2016: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/27918655/activity-profiles-and-positional-differences-of-handball-players-during-the-world-championships-in-qatar-2015
#20
Marco Cardinale, Rodney Whiteley, Ahmed Abdelrahman Hosny, Nebojsa Popovic
PURPOSE: Handball is an Olympic sport played indoor by 6 court players and one goalkeeper with rolling substitutions. Limited data exist on elite players competing in a World Championship and virtually no information exits on the evolution of time-motion performance over the course of a long tournament. Therefore, the aim of this study was to analyze time motion characteristics of elite male handball players of the last World Championships played in Qatar in 2015. METHODS: 384 Players from 24 national teams were analyzed during 88 matches using a tracking camera system and a bespoke software (Prozone Handball V...
December 5, 2016: International Journal of Sports Physiology and Performance
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