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https://www.readbyqxmd.com/read/28933712/volume-load-and-neuromuscular-fatigue-during-an-acute-bout-of-agonist-antagonist-paired-set-vs-traditional-set-training
#1
Gabriel A Paz, Daniel W Robbins, Carlos G de Oliveira, Martim Bottaro, Humberto Miranda
Paz, GA, Robbins, DW, de Oliveira, CG, Bottaro, M, and Miranda, H. Volume load and neuromuscular fatigue during an acute bout of agonist-antagonist paired-set vs. traditional-set training. J Strength Cond Res 31(10): 2777-2784, 2017-The purpose of this study was to investigate the acute effects of performing paired-set (PS) vs. traditional-set (TS) training over 3 consecutive sets, on volume load and electromyographic fatigue parameters of the latissimus dorsi, biceps brachii, pectoralis major, and triceps brachii muscles...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28932990/treatment-opportunities-in-patients-with-metabolic-myopathies
#2
REVIEW
Mette Cathrine Ørngreen, John Vissing
Metabolic myopathies are disorders affecting utilization of carbohydrates or fat in the skeletal muscle. Adult patients with metabolic myopathies typically present with exercise-induced pain, contractures or stiffness, fatigue, and myoglobinuria. Symptoms are related to energy failure. Purpose of review In this review, the current treatment options, including exercise therapy, dietary treatment, pharmacological supplementation, gene transcription, and enzyme replacement therapy, are described. Recent findings Recognition of the metabolic block in the metabolic myopathies has started the development of new therapeutic options...
September 21, 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/28932006/a-newly-developed-floor-chair-placed-on-an-office-chair-reduces-lumbar-muscle-fatigue-by-cyclically-changing-its-lumbar-supporting-shape
#3
Tadamitsu Matsuda, Takayuki Koyama, Yasushi Kurihara, Miki Tagami, Yasuaki Kusumoto, Osamu Nitta
[Purpose] This study investigated lumbar muscle fatigue before and after maintaining a seated position for one hour, lumbar and pelvic inclination angle change, in subjects with and without active lumber support. [Subjects and Methods] Fourteen healthy subjects randomized into two groups sat on a floor chair, placed on an office chair, that cyclically changed its lumbar supporting shape to provide active lumbar support (ALS) or no ALS for one hour. Before and after, we measured the frequency of muscle waveforms of the trunk extensor muscles when the subjects lifted an object weighing 10% of their body weight, using both hands while seated...
September 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28931538/modulators-of-actin-myosin-dissociation-basis-for-muscle-type-functional-differences-during-fatigue
#4
Christina Karatzaferi, Nancy Adamek, Michael A Geeves
The muscle types present with variable fatigue tolerance, in part due to the myosin isoform expressed. However, the critical steps that define 'fatigability' in vivo of fast vs slow myosin isoforms, at the molecular level, are not yet fully understood. We examined the modulation of the ATP-induced myosin sub-fragment 1 (S1) dissociation from pyrene-actin by inorganic phosphate (Pi), pH and temperature using a specially modified stopped-flow system that allowed fast kinetics measurements at physiological temperature...
September 20, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28930862/an-innovative-ergometer-to-measure-neuromuscular-fatigue-immediately-after-cycling
#5
Douglas Doyle-Baker, John Temesi, Mary E Medysky, Robert J Holash, Guillaume Y Millet
PURPOSE: When assessing neuromuscular fatigue (NMF) from dynamic exercise using large muscle mass (e.g. cycling), most studies have delayed measurement for 1-3 min after task failure. This study aimed to determine the reliability of an innovative cycling ergometer permitting the start of fatigue measurement within 1 s after cycling. METHODS: Twelve subjects participated in two experimental sessions. Knee-extensor NMF was assessed by electrical nerve and transcranial magnetic stimulation with both a traditional chair set-up (PRE and POST-Chair, 2 min post-exercise) and the new cycling ergometer (PRE, every 3 min during incremental exercise and POST-Bike, at task failure)...
September 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28930300/assessment-of-shoulder-and-low-back-muscle-activity-of-male-kitchen-workers-using-surface-electromyography
#6
Shankar Subramaniam, Shanmugam Murugesan, Srinivasan Jayaraman
OBJECTIVES: This study aims to assess muscle fatigue for kitchen workers during various tasks in a kitchen. MATERIAL AND METHODS: This study consists of 2 phases: a) surface electromyography (EMG) to determine muscle fatigue of trapezius and erector spinae muscles bilaterally for 12 healthy male volunteers during 30 min of Indian flatbread (chapati) preparation, b) self-administered questionnaire study after 30 min preparation to determine the impact on performance...
September 20, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28926743/influence-of-age-on-the-electromyographic-fatigue-threshold-of-the-masseter-and-temporal-muscles-of-healthy-individuals
#7
Lígia Franco Oliveira, Marcelo Palinkas, Paulo Batista de Vasconcelos, Isabela Hallak Regalo, Flávia Argentato Cecilio, Erica Franco Oliveira, Marisa Semprini, Selma Siéssere, Simone Cecilio Hallak Regalo
No abstract text is available yet for this article.
September 13, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28924018/ibrutinib-for-chronic-graft-versus-host-disease-after-failure-of-prior-therapy
#8
David Miklos, Corey S Cutler, Mukta Arora, Edmund K Waller, Madan Jagasia, Iskra Pusic, Mary E Flowers, Aaron C Logan, Ryotaro Nakamura, Bruce R Blazar, Yunfeng Li, Stephen Chang, Indu Lal, Jason Dubovsky, Danelle F James, Lori Styles, Samantha Jaglowski
Chronic graft-versus-host disease (cGVHD) is a serious complication of allogeneic stem cell transplantation with few effective options available after failure of corticosteroids. B and T cells play a role in the pathophysiology of cGVHD. Ibrutinib inhibits Bruton's tyrosine kinase in B cells and interleukin-2-inducible T-cell kinase in T cells. In preclinical models, ibrutinib reduced severity of cGVHD. This multicenter, open-label study evaluated the safety and efficacy of ibrutinib in patients with active cGVHD with inadequate response to corticosteroid-containing therapies...
September 18, 2017: Blood
https://www.readbyqxmd.com/read/28919067/impact-of-iron-deficiency-diagnosis-using-hepcidin-mass-spectrometry-dosage-methods-on-hospital-stay-and-costs-after-a-prolonged-icu-stay-study-protocol-for-a-multicentre-randomised-single-blinded-medico-economic-trial
#9
Sigismond Lasocki, Hervé Puy, Grégoire Mercier, Sylvain Lehmann
BACKGROUND: Iron deficiency (ID) is frequent but difficult to diagnose in critically ill patients. ID may be responsible for prolonged post-ICU hospital stays, since it results in fatigue, muscle weakness and anaemia. Hepcidin, the key iron metabolism hormone, may be a good marker of ID in these patients. The aim of this study is to determine whether using mass spectrometry hepcidin determination to diagnose (and treat) ID after prolonged ICU stays may reduce patients' subsequent hospital stays and costs in comparison with conventional (ferritin) methods...
September 14, 2017: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/28918955/shifts-in-the-relationship-between-motor-unit-recruitment-thresholds-versus-derecruitment-thresholds-during-fatigue
#10
Matt S Stock, Jacob A Mota
Muscle fatigue is associated with diminished twitch force amplitude. We examined changes in the motor unit recruitment versus derecruitment threshold relationship during fatigue. Nine men (mean age = 26 years) performed repeated isometric contractions at 50% maximal voluntary contraction (MVC) knee extensor force until exhaustion. Surface electromyographic signals were detected from the vastus lateralis, and were decomposed into their constituent motor unit action potential trains. Motor unit recruitment and derecruitment thresholds and firing rates at recruitment and derecruitment were evaluated at the beginning, middle, and end of the protocol...
September 14, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28918950/power-transfer-to-a-human-during-an-electric-eel-s-shocking-leap
#11
Kenneth C Catania
Electric eels have been the subject of investigation and curiosity for centuries [1]. They use high voltage to track [2] and control [3] prey, as well as to exhaust prey by causing involuntary fatigue through remote activation of prey muscles [4]. But their most astonishing behavior is the leaping attack, during which eels emerge from the water to directly electrify a threat [5, 6]. This unique defense has reportedly been used against both horses [7] and humans [8]. Yet the dynamics of the circuit that develops when a living animal is contacted and the electrical power transmitted to the target have not been directly investigated...
September 8, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28916479/dietary-nitrate-increases-vo2peak-and-performance-but-does-not-alter-ventilation-or-efficiency-in-patients-with-heart-failure-with-reduced-ejection-fraction
#12
Andrew R Coggan, Seth R Broadstreet, Kiran Mahmood, Deana Mikhalkova, Michael Madigan, Indra Bole, Soo Park, Joshua L Leibowitz, Ana Kadkhodayan, Deepak P Thomas, Dakkota Thies, Linda R Peterson
BACKGROUND: Patients with heart failure with reduced ejection fraction (HFrEF) exhibit lower efficiency, dyspnea, and diminished peak O2 uptake (VO2peak) during exercise. Dietary nitrate (NO3(-)), a source of nitric oxide (NO), has improved these measures in some studies of other populations. We determined the effects of acute NO3(-) ingestion on exercise responses in eight patients with HFrEF using a randomized, double-blind, placebo-controlled, crossover design. METHODS AND RESULTS: Plasma NO3(-), nitrite (NO2(-)), and breath NO were measured at multiple time points and respiratory gas exchange was determined during exercise after ingestion of beetroot juice containing or devoid of 11...
September 12, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28916153/improving-provision-of-care-for-long-term-survivors-of-lymphoma
#13
REVIEW
Sabino Ciavarella, Carla Minoia, Angela Maria Quinto, Stefano Oliva, Santa Carbonara, Claudia Cormio, Maria Christina Cox, Elena Bravo, Filippo Santoro, Mariarosaria Napolitano, Michele Spina, Giacomo Loseto, Attilio Guarini
The progressive improvement of lymphoma therapies has led to a significant prolongation of patient survival and life expectancy. However, lymphoma survivors are at high risk of experiencing a range of early and late adverse effects associated with the extent of treatment exposure. Among these, second malignancies and cardiopulmonary diseases can be fatal, and neurocognitive dysfunction, endocrinopathy, muscle atrophy, and persistent fatigue can affect patients' quality of life for decades after treatment. Early recognition and reduction of risk factors and proper monitoring and treatment of these complications require well-defined follow-up criteria, close coordination among specialists of different disciplines, and a tailored model of survivorship care...
August 17, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28915863/lifestyle-intervention-to-improve-quality-of-life-and-prevent-weight-gain-after-renal-transplantation-design-of-the-active-care-after-transplantation-act-randomized-controlled-trial
#14
Gerald Klaassen, Dorien M Zelle, Gerjan J Navis, Desie Dijkema, Frederike J Bemelman, Stephan J L Bakker, Eva Corpeleijn
BACKGROUND: Low physical activity and reduced physical functioning are common after renal transplantation, resulting in a reduced quality of life. Another common post-transplantation complication is poor cardio-metabolic health, which plays a main role in long-term outcomes in renal transplant recipients (RTR). It is increasingly recognized that weight gain in the first year after transplantation, especially an increase in fat mass, is a highly common contributor to cardio-metabolic risk...
September 15, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28915856/exercise-prescription-for-patients-with-multiple-sclerosis-potential-benefits-and-practical-recommendations
#15
Farzin Halabchi, Zahra Alizadeh, Mohammad Ali Sahraian, Maryam Abolhasani
BACKGROUND: Multiple sclerosis (MS) can result in significant mental and physical symptoms, specially muscle weakness, abnormal walking mechanics, balance problems, spasticity, fatigue, cognitive impairment and depression. Patients with MS frequently decrease physical activity due to the fear from worsening the symptoms and this can result in reconditioning. Physicians now believe that regular exercise training is a potential solution for limiting the reconditioning process and achieving an optimal level of patient activities, functions and many physical and mental symptoms without any concern about triggering the onset or exacerbation of disease symptoms or relapse...
September 16, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28912923/lack-of-needs-assessment-in-cancer-survivorship-care-and-rehabilitation-in-hospitals-and-primary-care-settings
#16
Charlotte Handberg, Charlotte Maria Jensen, Thomas Maribo
BACKGROUND: Formalized and systematic assessment of survivorship care and rehabilitation needs is prerequisite for ensuring cancer patients sufficient help and support through their cancer trajectory. Patients are often uncertain as to how to express and address their survivorship care and rehabilitation needs, and little is known about specific, unmet needs and the plans necessary to meet them. There is a call for both ensuring survivorship care and rehabilitation for cancer patients in need and further for documenting the specific needs related to the cancer disease and its treatment...
October 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28912726/cardiovascular-and-muscular-consequences-of-work-matched-interval-type-of-concentric-and-eccentric-pedaling-exercise-on-a-soft-robot
#17
Martin Flück, Rebekka Bosshard, Max Lungarella
Eccentric types of endurance exercise are an acknowledged alternative to conventional concentric types of exercise rehabilitation for the cardiac patient, because they reduce cardiorespiratory strain due to a lower metabolic cost of producing an equivalent mechanical output. The former contention has not been tested in a power- and work-matched situation of interval-type exercise under identical conditions because concentric and eccentric types of exercise pose specific demands on the exercise machinery, which are not fulfilled in current practice...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28912650/the-effects-combining-cryocompression-therapy-following-an-acute-bout-of-resistance-exercise-on-performance-and-recovery
#18
William H DuPont, Brek J Meuris, Vincent H Hardesty, Emily C Barnhart, Landon H Tompkins, Morricia J P Golden, Clayton J Usher, Paul A Spence, Lydia K Caldwell, Emily M Post, Matthew K Beeler, William J Kraemer
Compression and cold therapy used separately have shown to reduce negative effects of tissue damage. The combining compression and cold therapy (cryocompression) as a single recovery modality has yet to be fully examined. To examine the effects of cryocompression on recovery following a bout of heavy resistance exercise, recreationally resistance trained men (n =16) were recruited, matched, and randomly assigned to either a cryocompression group (CRC) or control group (CON). Testing was performed before and then immediately after exercise, 60 minutes, 24 hours, and 48 hours after a heavy resistance exercise workout (barbell back squats for 4 sets of 6 reps at 80% 1RM, 90 sec rest between sets, stiff legged deadlifts for 4 sets of 8 reps at 1...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28911611/antifatigue-and-increasing-exercise-performance-of-actinidia-arguta-crude-alkaloids-in-mice
#19
Yangyang Liu, Changjiang Liu
Actinidia arguta (Siebold et Zucc.) Planch. ex. Miq. is one of the most recently domesticated fruit species with increasing commercial production worldwide. It is a well-known traditional Chinese medicine and is used to reduce blood glucose and treat atopic dermatitis. In addition, it possesses antioxidant, anticancer, and antiallergic properties. In this study, we investigated the physical antifatigue and exercise performance effects of A. arguta crude alkaloids (AACA) extracted with 70% ethanol. Four groups of male Kunming mice (n = 16) were orally administered AACA at doses of 0 mg/kg/d (vehicle), 50 mg/kg/d (AACA-50), 100 mg/kg/d (AACA-100), or 200 mg/kg/d (AACA-200) for 28 days...
October 2016: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28904172/fda-approval-summary-daratumumab-for-treatment-of-multiple-myeloma-after-one-prior-therapy
#20
Vishal Bhatnagar, Nicole J Gormley, Lola Luo, Yuan Li Shen, Rajeshwari Sridhara, Sriram Subramaniam, Guoxiang Shen, Lian Ma, Stacy Shord, Kirsten B Goldberg, Ann T Farrell, Amy E McKee, Richard Pazdur
On November 21, 2016, the U.S. Food and Drug Administration granted regular approval to daratumumab in combination with lenalidomide and dexamethasone, or bortezomib and dexamethasone, for the treatment of patients with multiple myeloma who have received at least one prior therapy. Approval was based on two randomized, open-label trials in which daratumumab was added to these backbone therapies. The MMY3003 trial demonstrated substantial improvement in progression-free survival (PFS) when daratumumab was added to lenalidomide and dexamethasone compared with lenalidomide and dexamethasone alone...
September 13, 2017: Oncologist
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