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Tracking Fatigue

Sharon A Brown, William B Perkison, Alexandra A García, Heather E Cuevas, Mary M Velasquez, Mary A Winter, Craig L Hanis
Purpose The purpose of the study was to conduct focus groups with Mexican Americans in an impoverished rural community on the Texas-Mexico border to identify current barriers to adopting healthier lifestyles and to obtain recommendations for diabetes prevention. Methods Three separate 2-hour focus groups were led by an experienced bilingual Mexican American moderator. Interviews included questions about cultural factors and barriers that influence lifestyle behaviors, aspects of previous diabetes self-management interventions that were helpful for motivating behavioral change, and recommendations for diabetes prevention...
April 1, 2018: Diabetes Educator
Álvaro López-Samanes, Jesús G Pallarés, Alberto Pérez-López, Ricardo Mora-Rodríguez, Juan F Ortega
We sought to measure the response of cortisol concentrations around a professional tennis match and its association with hydration status and neuromuscular performance. Nine professional male tennis players were tested in a rest day, and 2-week after, during the first match of a professional tournament played in a clay-court. Salivary concentrations of cortisol (SalCC) were measured in a resting day (9:00 am and 8:00 pm), at the match day (9:00 am and 8:00 pm) and immediately before and after the match. Hydration status was assessed before the match (urine specific gravity; USG) while fluid turnover was tracked during the match...
2018: PloS One
Mohammad Fazel, Hamid Reza Salimijazi, Morteza Shamanian
The present investigation reports corrosion and tribocorrosion behavior of Anodic Spark Oxidation (ASO) coatings formed at 20̊C and -10̊C temperatures. The SEM micrographs showed the volcanic morphology of both oxide layers. However, despite the numerous open pores on the 20̊C formed layers, the plasma discharged channels were blocked on the surfaces of the sub-zero ASO coatings. According to polarization curves, the -10̊C treated samples showed a significant increase in the corrosion resistance (jcorr of 0...
April 6, 2018: ACS Applied Materials & Interfaces
Rima Solianik, Andrius Satas, Dalia Mickeviciene, Agne Cekanauskaite, Dovile Valanciene, Daiva Majauskiene, Albertas Skurvydas
This study aimed to explore the effect of prolonged speed-accuracy motor task on the indicators of psychological, cognitive, psychomotor and motor function. Ten young men aged 21.1 ± 1.0 years performed a fast- and accurate-reaching movement task and a control task. Both tasks were performed for 2 h. Despite decreased motivation, and increased perception of effort as well as subjective feeling of fatigue, speed-accuracy motor task performance improved during the whole period of task execution. After the motor task, the increased working memory function and prefrontal cortex oxygenation at rest and during conflict detection, and the decreased efficiency of incorrect response inhibition and visuomotor tracking were observed...
April 2, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
Michael Berneking, Ilene M Rosen, Douglas B Kirsch, Ronald D Chervin, Kelly A Carden, Kannan Ramar, R Nisha Aurora, David A Kristo, Raman K Malhotra, Jennifer L Martin, Eric J Olson, Carol L Rosen, James A Rowley, Indira Gurubhagavatula
The ridesharing-or ride-hailing-industry has grown exponentially in recent years, transforming quickly into a fee-for-service, unregulated taxi industry. While riders are experiencing the benefits of convenience and affordability, two key regulatory and safety issues deserve consideration. First, individuals who work as drivers in the ridesharing industry are often employed in a primary job, and they work as drivers during their "off" time. Such a schedule may lead to driving after extended periods of wakefulness or during nights, both of which are factors that increase the risk of drowsy driving accidents...
March 30, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
Janet D Pierce, Diane E Mahoney, John B Hiebert, Amanda R Thimmesch, Francisco J Diaz, Carol Smith, Qiuhua Shen, Dinesh Pal Mudaranthakam, Richard L Clancy
BACKGROUND: Heart failure (HF), the leading cause of morbidity and mortality in the US, affects 6.6 million adults with an estimated additional 3 million people by 2030. More than 50% of HF patients have heart failure with preserved left ventricular ejection fraction (HFpEF). These patients have impaired cardiac muscle relaxation and diastolic filling, which investigators have associated with cellular energetic impairment. Patients with HFpEF experience symptoms of: (1) fatigue; (2) shortness of breath; and (3) swelling (edema) of the lower extremities...
April 2, 2018: BMC Cardiovascular Disorders
N Peter Reeves, Abraham Luis, Elizabeth C Chan, Victor G Sal Y Rosas, Martin L Tanaka
Slower trunk muscle responses are linked to back pain and injury. Unfortunately, clinical assessments of spine function do not objectively evaluate this important attribute, which reflects speed of trunk control. Speed of trunk control can be parsed into two components: (1) delay, the time it takes to initiate a movement, and (2) lag, the time it takes to execute a movement once initiated. The goal of this study is to demonstrate a new approach to assess delay and lag in trunk control using a simple tracking task...
March 17, 2018: Journal of Biomechanics
Dmitry V Zaretsky, Hannah Kline, Maria V Zaretskaia, Mary Beth Brown, Pamela J Durant, Nathan J Alves, Daniel E Rusyniak
Stimulants cause hyperthermia, in part, by increasing heat generation through exercise. Stimulants also delay the onset of fatigue and exhaustion allowing animals to exercise longer. If used in a warm environment, this combination (increased exercise and decreased fatigue) can cause heat stroke. The dorsomedial hypothalamus (DMH) is involved in mediating locomotion from stimulants. Furthermore, inhibiting the DMH decreases locomotion and prevents hyperthermia in rats given stimulants in a warm environment. Whether the DMH is involved in mediating exercise-induced fatigue and exhaustion is not known...
March 22, 2018: Brain Research
Ron D Hays, Karen L Spritzer, Benjamin D Schalet, David Cella
PURPOSE: The PROMIS-29 v2.0 profile assesses pain intensity using a single 0-10 numeric rating item and seven health domains (physical function, fatigue, pain interference, depressive symptoms, anxiety, ability to participate in social roles and activities, and sleep disturbance) using four items per domain. This paper describes the development of physical and mental health summary scores for the PROMIS-29 v2.0. METHOD: We conducted factor analyses of PROMIS-29 scales on data collected from two internet panels (n = 3000 and 2000)...
March 22, 2018: Quality of Life Research
Stephanie Weber, Christian Puta, Melanie Lesinski, Brunhild Gabriel, Thomas Steidten, Karl-Jürgen Bär, Marco Herbsleb, Urs Granacher, Holger H W Gabriel
Elite young athletes have to cope with multiple psychological demands such as training volume, mental and physical fatigue, spatial separation of family and friends or time management problems may lead to reduced mental and physical recovery. While normative data regarding symptoms of anxiety and depression for the general population is available (Hinz and Brähler, 2011), hardly any information exists for adolescents in general and young athletes in particular. Therefore, the aim of this study was to assess overall symptoms of anxiety and depression in young athletes as well as possible sex differences...
2018: Frontiers in Physiology
James H Rimmer, Cassandra Herman, Brooks Wingo, Kevin Fontaine, Tapan Mehta
BACKGROUND: Hybrid research designs targeting adults with neurologic disability are critical for improving the efficiency of models that can identify, track and intervene on identified health issues. METHODS: Our Russian doll framework encompasses three study phases. Phase 1 involves prospectively following a cohort of participants with disability to examine the relationships between rates of health and functional deficits (e.g., pain, fatigue, deconditioning), functional measures (e...
March 14, 2018: BMC Medical Research Methodology
Alexander W Forsyth, Regina Barzilay, Kevin S Hughes, Dickson Lui, Karl A Lorenz, Andrea Enzinger, James A Tulsky, Charlotta Lindvall
CONTEXT: Clinicians document cancer patients' symptoms in free-text format within electronic health record visit notes. Although symptoms are critically important to quality of life and often herald clinical status changes, computational methods to assess the trajectory of symptoms over time are woefully underdeveloped. OBJECTIVES: To create machine learning algorithms capable of extracting patient-reported symptoms from free-text electronic health record notes...
February 26, 2018: Journal of Pain and Symptom Management
Patrick Delisle-Houde, Nathan A Chiarlitti, Ryan E R Reid, Ross E Andersen
Hockey player's body composition and physical fitness are suggested to influence coaching decisions regarding on-ice playing time. The purpose of this study was to explore the relationship between seasonal body composition changes, off-ice pre-season testing and on-ice metrics. Twenty-one Canadian collegiate hockey players (22.70 ± 1.30 years old, 181.0 ± 5.92 cm, 86.52 ± 6.41 kg) underwent off-ice physical testing at the beginning of their season, and had one total body dual energy x-ray absorptiometry scan at the beginning and end of the season...
February 14, 2018: Journal of Strength and Conditioning Research
Guido Giunti, Jan Kool, Octavio Rivera Romero, Enrique Dorronzoro Zubiete
BACKGROUND: Multiple sclerosis (MS) is one of the world's most common neurologic disorders, with symptoms such as fatigue, cognitive problems, and issues with mobility. Evidence suggests that physical activity (PA) helps people with MS reduce fatigue and improve quality of life. The use of mobile technologies for health has grown in recent years with little involvement from relevant stakeholders. User-centered design (UCD) is a design philosophy with the goal of creating solutions specific to the needs and tasks of the intended users...
February 9, 2018: JMIR MHealth and UHealth
Brook A Shiferaw, Luke A Downey, Justine Westlake, Bronwyn Stevens, Shantha M W Rajaratnam, David J Berlowitz, Phillip Swann, Mark E Howard
Performance decrement associated with sleep deprivation is a leading contributor to traffic accidents and fatalities. While current research has focused on eye blink parameters as physiological indicators of driver drowsiness, little is understood of how gaze behaviour alters as a result of sleep deprivation. In particular, the effect of sleep deprivation on gaze entropy has not been previously examined. In this randomised, repeated measures study, 9 (4 male, 5 female) healthy participants completed two driving sessions in a fully instrumented vehicle (1 after a night of sleep deprivation and 1 after normal sleep) on a closed track, during which eye movement activity and lane departure events were recorded...
February 2, 2018: Scientific Reports
Mert Ergeneci, Kaan Gokcesu, Erhan Ertan, Panagiotis Kosmas
Wearable technology has gained increasing popularity in the applications of healthcare, sports science, and biomedical engineering in recent years. Because of its convenient nature, the wearable technology is particularly useful in the acquisition of the physiological signals. Specifically, the (surface electromyography) sEMG systems, which measure the muscle activation potentials, greatly benefit from this technology in both clinical and industrial applications. However, the current wearable sEMG systems have several drawbacks including inefficient noise cancellation, insufficient measurement quality, and difficult integration to customized applications...
February 2018: IEEE Transactions on Biomedical Circuits and Systems
Malihe Sabeti, Reza Boostani, Karim Rastgar
Accurate differentiation of mental fatigue levels by analyzing electroencephalogram (EEG) features is still a challenge. This deficiency is rooted in the inability of conventional EEG features to reveal significant changes amongst fatigue levels. From a different perspective, it is evident for evaluating the amount of alertness that characterizing the P300 component is widely used by performing a recognition task. The goal of this study is to classify the pre-task and post-task fatigue levels by tracking the spatial activation of their P300 sources compared to differentiating the P300 waveform features...
2018: Journal of Integrative Neuroscience
Aaron D Heishman, Michael A Curtis, Ethan Saliba, Robert J Hornett, Steven K Malin, Arthur L Weltman
Heishman, AD, Curtis, MA, Saliba, E, Hornett, RJ, Malin, SK, and Weltman, AL. Noninvasive assessment of internal and external player load: implications for optimizing athletic performance. J Strength Cond Res 32(5): 1280-1287, 2018-Few data exist that assess athlete tracking and monitoring for the development of strategies to optimize performance and reduce fatigue in elite athletes. The purpose of the present study was to assess the efficacy of external load and internal stress monitoring as assessment tools for examining a performance index of fatigue...
May 2018: Journal of Strength and Conditioning Research
Tarek N Hanna, Matthew E Zygmont, Ryan Peterson, David Theriot, Haris Shekhani, Jamlik-Omari Johnson, Elizabeth A Krupinski
PURPOSE: The aim of this study was to assess the effect of overnight shifts (ONS) on radiologist fatigue, visual search pattern, and diagnostic performance. METHODS: This experimental study was approved by the institutional review board. Twelve radiologists (five faculty members and seven residents) each completed two sessions: one during a normal workday ("not fatigued") and another in the morning after an ONS ("fatigued"). Each radiologist completed the Swedish Occupational Fatigue Inventory...
January 20, 2018: Journal of the American College of Radiology: JACR
Luciana Mara Soares, Mehrdad Razaghy, Pascal Magne
OBJECTIVE: To compare mechanical performance and enamel-crack propensity of direct, semi-direct, and CAD/CAM approaches for large MOD composite-resin restorations. METHODS: 45 extracted maxillary molars underwent standardized slot-type preparation (5-mm depth and bucco-palatal width) including immediate dentin sealing (Optibond FL) for the inlays (30 teeth). Short-fiber reinforced composite-resin (EverX Posterior covered by Gradia Direct Posterior) was used for the direct approach, Gradia Direct Posterior for the semi-direct, and Cerasmart composite resin blocks for CAD/CAM inlays...
April 2018: Dental Materials: Official Publication of the Academy of Dental Materials
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