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https://www.readbyqxmd.com/read/28422770/technical-alterations-during-an-incremental-field-test-in-elite-male-tennis-players
#1
Cyril Brechbuhl, Olivier Girard, Grégoire P Millet, Laurent Schmitt
PURPOSE: We investigated technical and physiological responses along with their relationships during an incremental field test to exhaustion specific to tennis (TEST) in elite players. METHODS: Twenty male elite tennis players completed TEST, which consisted of hitting alternatively forehand and backhand strokes at increasing ball frequency (ball machine) every minute. Ball accuracy (BA), ball velocity (BV) and tennis performance index (TP = BA x BV) were determined by radar and video analysis for each stroke, in addition to cardiorespiratory responses and blood lactate concentrations...
April 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28422520/low-level-laser-therapy-improves-performance-and-reduces-fatigue-in-competitive-cyclists
#2
Fábio J Lanferdini, Rodrigo R Bini, Bruno M Baroni, Kelli D Klein, Felipe P Carpes, Marco A Vaz
Evidence supports that low-level laser therapy (LLLT) minimizes fatigue effects on muscle performance. However, the ideal LLLT dosage to improve athletes' performance during sports activities, such as cycling, is still unclear. Therefore, the goal of this study was to investigate the effects of different LLLT dosages on cyclists' performance in time-to-exhaustion tests. In addition, we looked at the effects of LLLT on the frequency content of the EMG signals to assess fatigue mechanisms. Twenty male competitive cyclists participated in a crossover, randomized, double-blind and placebo-controlled trial...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28410876/the-treatment-of-fatigue-by-non-invasive-brain-stimulation
#3
REVIEW
Jean-Pascal Lefaucheur, Moussa A Chalah, Alaa Mhalla, Ulrich Palm, Samar S Ayache, Veit Mylius
The use of non-invasive brain neurostimulation (NIBS) techniques to treat neurological or psychiatric diseases is currently under development. Fatigue is a commonly observed symptom in the field of potentially treatable pathologies by NIBS, yet very little data has been published regarding its treatment. We conducted a review of the literature until the end of February 2017 to analyze all the studies that reported a clinical assessment of the effects of NIBS techniques on fatigue. We have limited our analysis to repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS)...
April 11, 2017: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/28410168/assessment-of-cancer-survivors-experiences-of-using-a-publicly-available-physical-activity-mobile-application
#4
Patrycja Puszkiewicz, Anna L Roberts, Lee Smith, Jane Wardle, Abigail Fisher
BACKGROUND: Regular participation in physical activity (PA) is associated with improved physical and psychosocial outcomes in cancer survivors. However, PA levels are low during and after cancer treatment. Interventions to promote PA in this population are needed. PA mobile apps are popular and have potential to increase PA participation, but little is known about how appropriate or relevant they are for cancer survivors. OBJECTIVE: This study aims to (1) assess recruitment, study uptake, and engagement for a publicly available PA mobile app (GAINFitness) intervention in cancer survivors; (2) assess cancer survivors' attitudes towards the app; (3) understand how the app could be adapted to better meet the needs of cancer survivors; and (4) to determine the potential for change in PA participation and psychosocial outcomes over a 6-week period of using the app...
May 31, 2016: JMIR Cancer
https://www.readbyqxmd.com/read/28375851/effects-of-force-load-muscle-fatigue-and-extremely-low-frequency-magnetic-stimulation-on-eeg-signals-during-side-arm-lateral-raise-task
#5
Ying Wang, Liu Cao, Dongmei Hao, Yao Rong, Lin Yang, Song Zhang, Fei Chen, Dingchang Zheng
The aim of this study was to quantitatively investigate the effects of force load, muscle fatigue and extremely low frequency (ELF) magnetic stimulation on electroencephalography (EEG) signal features during side arm lateral raise task. EEG signals were recorded by a BIOSEMI Active Two system with Pin-Type active-electrodes from 18 healthy subjects when they performed the right arm side lateral raise task (90 degrees away from the body) with three different loads (0kg, 1kg and 3 kg; their order was randomized among the subjects) on the forearm...
April 4, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28357580/the-relationship-between-oxygen-uptake-kinetics-and-neuromuscular-fatigue-in-high-intensity-cycling-exercise
#6
John Temesi, Felipe Mattioni Maturana, Arthur Peyrard, Tatiane Piucco, Juan M Murias, Guillaume Y Millet
PURPOSE: In theory, a slow oxygen uptake ([Formula: see text]) kinetics leads to a greater accumulation of anaerobic by-products, which can, in turn, induce more neuromuscular fatigue. However, the existence of this relationship has never been tested. METHODS: After two sessions to measure peak [Formula: see text], peak power output (POpeak), and [Formula: see text] kinetics responses in the unfatigued state (τ [Formula: see text] MOD), 10 healthy young adults performed a 6-min cycling bout at 80% POpeak (INT6-min)...
March 29, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28350240/the-effects-of-task-type-on-time-to-task-failure-during-fatigue-a-modified-s%C3%A3-rensen-test
#7
David W Russ, Andrew J Ross, Brian C Clark, James S Thomas
Understanding mechanisms of fatigue of the trunk extensors is important because fatigue is a major factor in predicting incidence of low back pain, but few studies have examined trunk extensor fatigue muscles using differing load types and measured the amplitude and frequency domain of the electromyographic signal to explain these differences. Sixteen healthy participants performed position- and force-matching fatigue tasks in a modified Sørensen test position. Time to task failure was significantly longer during the position-matching task compared to force-matching task (58...
March 28, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28344545/music-improves-subjective-feelings-leading-to-cardiac-autonomic-nervous-modulation-a-pilot-study
#8
Satoshi Kume, Yukako Nishimura, Kei Mizuno, Nae Sakimoto, Hiroshi Hori, Yasuhisa Tamura, Masanori Yamato, Rika Mitsuhashi, Keigo Akiba, Jun-Ichi Koizumi, Yasuyoshi Watanabe, Yosky Kataoka
It is widely accepted that listening to music improves subjective feelings and reduces fatigue sensations, and different kinds of music lead to different activations of these feelings. Recently, cardiac autonomic nervous modulation has been proposed as a useful objective indicator of fatigue. However, scientific considerations of the relation between feelings of fatigue and cardiac autonomic nervous modulation while listening to music are still lacking. In this study, we examined which subjective feelings of fatigue are related to participants' cardiac autonomic nervous function while they listen to music...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28339438/the-role-of-autonomic-function-in-exercise-induced-endogenous-analgesia-a-case-control-study-in-myalgic-encephalomyelitis-chronic-fatigue-syndrome-and-healthy-people
#9
Jessica Van Oosterwijck, Uros Marusic, Inge De Wandele, Lorna Paul, Mira Meeus, Greta Moorkens, Luc Lambrecht, Lieven Danneels, Jo Nijs
BACKGROUND: Patients with myalgic encephalomyelitis / chronic fatigue syndrome (ME/CFS) are unable to activate brain-orchestrated endogenous analgesia (or descending inhibition) in response to exercise. This physiological impairment is currently regarded as one factor explaining post-exertional malaise in these patients. Autonomic dysfunction is also a feature of ME/CFS. OBJECTIVES: This study aims to examine the role of the autonomic nervous system in exercise-induced analgesia in healthy people and those with ME/CFS, by studying the recovery of autonomic parameters following aerobic exercise and the relation to changes in self-reported pain intensity...
March 2017: Pain Physician
https://www.readbyqxmd.com/read/28321365/testing-the-habituation-assumption-underlying-models-of-parasitoid-foraging-behavior
#10
Paul K Abram, Antonino Cusumano, Katrina Abram, Stefano Colazza, Ezio Peri
BACKGROUND: Habituation, a form of non-associative learning, has several well-defined characteristics that apply to a wide range of physiological and behavioral responses in many organisms. In classic patch time allocation models, habituation is considered to be a major mechanistic component of parasitoid behavioral strategies. However, parasitoid behavioral responses to host cues have not previously been tested for the known, specific characteristics of habituation. METHODS: In the laboratory, we tested whether the foraging behavior of the egg parasitoid Trissolcus basalis shows specific characteristics of habituation in response to consecutive encounters with patches of host (Nezara viridula) chemical contact cues (footprints), in particular: (i) a training interval-dependent decline in response intensity, and (ii) a training interval-dependent recovery of the response...
2017: PeerJ
https://www.readbyqxmd.com/read/28306705/impact-of-fatigue-characteristics-on-quality-of-life-in-patients-after-heart-transplantation
#11
Yu-Ying Chou, Yeur-Hur Lai, Shoei-Shen Wang, Shiow-Ching Shun
BACKGROUND: Fatigue has been identified as a major symptom in heart transplant (HTx) patients; however, researchers have not examined the role of fatigue characteristics (ie, intensity, interference, and duration) in the quality of life (QOL) of HTx patients. OBJECTIVE: The aim of this study was to explore differences in physical and mental aspects of QOL by patient characteristics, as well as the association between fatigue characteristics and QOL in HTx patients after considering other confounding factors (symptom distress and psychological distress)...
March 17, 2017: Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/28296272/ergonomic-analysis-of-the-surgical-position-in-functional-endoscopic-sinus-surgery
#12
Vijay R Ramakrishnan, Benjamin M Milam
BACKGROUND: Ergonomics is the methodologic study of people's efficiency in their work environment and is based on anatomy, physiology, psychology, and engineering. Although highly studied in other work environments, little attention has been paid to surgeons until the landmark survey by Park et al in 2010. Many unique aspects of endoscopic surgery amplify task-related physical discomfort, and, because of these issues, we aimed to study the physical fatigue effects of functional endoscopic sinus surgery (FESS) performed in the standing and sitting positions...
March 15, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28291023/central-contribution-to-electrically-induced-fatigue-depends-on-stimulation-frequency
#13
Sidney Grosprêtre, Nicolas Gueugneau, Alain Martin, Romuald Lepers
PURPOSE: This study analyzed the impact of several protocols of neuromuscular electrical stimulation (NMES), matched with a similar total torque-time integral, on muscle activation pathways and neuromuscular fatigue. METHODS: Ten young healthy participants (age: 24.6 ± 4.2) performed 3 randomized NMES sessions on the triceps surae muscles with 20 Hz, 60 Hz or 100 Hz stimulation frequencies (pulse duration: 1 ms), with pulse amplitude (IES) set at 20 % of isometric maximal voluntary contraction (MVC)...
March 13, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28276066/stress-vulnerability-in-adolescents-with-chronic-fatigue-syndrome-experimental-study-investigating-heart-rate-variability-and-skin-conductance-responses
#14
Katharine A Rimes, Kate Lievesley, Trudie Chalder
BACKGROUND: Stress vulnerability has been implicated in adolescent chronic fatigue syndrome (CFS), but has rarely been investigated directly. This study compared psychological and physiological responses to a laboratory social performance task in adolescents with CFS with chronic illness (asthma) and healthy control groups. METHODS: Adolescents with CFS (n = 60), adolescents with asthma (n = 31) and healthy adolescents (n = 78) completed questionnaires before and after a social performance task...
March 9, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28269356/real-time-physiological-and-facial-monitoring-for-safe-driving
#15
Yu-Lung Chang, Yen-Cheng Feng, Oscal T-C Chen
This work is to develop an intelligent driver-assistance system which can perceive the physiological state of a driver to avoid fatigue driving. The proposed system includes a camera, a wireless ElectroCardioGram (ECG) sensor patch, and a computation platform. The camera in front of a driver is to catch a face image which is processed to obtain features of a mouth for identifying a yawn. The sensor patch records ECG signals which are computed to yield six Heart Rate Variability (HRV) parameters. Seven healthy subjects of 6 males and 1 female had individually driven a car, which was embedded with our system, for 3 hours at a well-known route, mostly in a freeway road...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227598/real-time-physiological-and-facial-monitoring-for-safe-driving
#16
Yu-Lung Chang, Yen-Cheng Feng, Oscal T-C Chen, Yu-Lung Chang, Yen-Cheng Feng, Oscal T-C Chen, Yen-Cheng Feng, Oscal T-C Chen, Yu-Lung Chang
This work is to develop an intelligent driver-assistance system which can perceive the physiological state of a driver to avoid fatigue driving. The proposed system includes a camera, a wireless ElectroCardioGram (ECG) sensor patch, and a computation platform. The camera in front of a driver is to catch a face image which is processed to obtain features of a mouth for identifying a yawn. The sensor patch records ECG signals which are computed to yield six Heart Rate Variability (HRV) parameters. Seven healthy subjects of 6 males and 1 female had individually driven a car, which was embedded with our system, for 3 hours at a well-known route, mostly in a freeway road...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28212264/correlated-emg-oscillations-between-antagonists-during-cocontraction-in-men
#17
Yasuhide Yoshitake, Hiroaki Kanehisa, Minoru Shinohara
PURPOSE: The purpose of this study was to determine the modulation of common low-frequency oscillations in pools of motor units across antagonistic muscles because of the difference in the activation level of pools of spinal motor neurons and the presence of neuromuscular fatigue during intended cocontraction. METHODS: Ten healthy young men (21.8 ± 1.5 yr) performed intended steady cocontractions of elbow flexors and extensors at maximal and a submaximal (10% of maximal EMG) effort...
March 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28206848/the-prevalence-of-compassion-fatigue-among-veterinary-students-in-australia-and-the-associated-psychological-factors
#18
Michelle L McArthur, Jena R Andrews, Conor Brand, Susan J Hazel
Compassion fatigue, compassion satisfaction, and other characteristics such as mindfulness and mental health stigma have not been investigated in veterinary students. The aims of this study were twofold: first to determine the prevalence of compassion, satisfaction, burnout, and secondary traumatic stress among Australian veterinary students and second to investigate the association between these factors and self-stigma, coping, empathy, and mindfulness. A cross-sectional online survey consisting of demographic questions and four validated psychological measures sampled 828 students, with a response rate of 31% (255/828)...
2017: Journal of Veterinary Medical Education
https://www.readbyqxmd.com/read/28183331/phase-ii-randomized-placebo-controlled-study-of-dovitinib-in-combination-with-fulvestrant-in-postmenopausal-patients-with-hr-her2-breast-cancer-that-had-progressed-during-or-after-prior-endocrine-therapy
#19
Antonino Musolino, Mario Campone, Patrick Neven, Neelima Denduluri, Carlos H Barrios, Javier Cortes, Kimberly Blackwell, Hatem Soliman, Zsuzsanna Kahan, Hervé Bonnefoi, Matthew Squires, Yong Zhang, Stephanie Deudon, Michael M Shi, Fabrice André
BACKGROUND: Overexpression of fibroblast growth factor receptor 1 (FGFR1), found in ≤8% of hormone receptor-positive (HR(+)), human epidermal growth factor receptor 2-negative (HER2(-)) breast cancer cases, is correlated with decreased overall survival and resistance to endocrine therapy (ET). Dovitinib, a potent FGFR inhibitor, has demonstrated antitumor activity in heavily pretreated patients with FGFR pathway-amplified breast cancer. METHODS: In this randomized, placebo-controlled phase II trial, we evaluated whether the addition of dovitinib to fulvestrant would improve outcomes in postmenopausal patients with HR(+), HER2(-) advanced breast cancer that had progressed during or after prior ET...
February 10, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28163282/potential-objective-biomarkers-for-fatigue-among-working-women
#20
Chie Ebata, Hitomi Tatsuta, Masayuki Tatmeichi
OBJECTIVE: The prediction of health impairment due to work overload is subjectively assessed based on recognized symptoms; however, objective evaluation is primarily ideal in the field of occupational health. Recently, some biomarkers of autonomic function and/or oxidative stress were reported to be associated with fatigue. This study aimed to preliminarily investigate whether these biomarkers could be objective indicators for fatigue and stress among working women. METHOD: Participants included 118 full-time female workers (mean age 37...
February 4, 2017: Journal of Occupational Health
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