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Intermittent exercise

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https://www.readbyqxmd.com/read/27918652/does-short-duration-heat-exposure-at-a-matched-cardiovascular-intensity-improve-intermittent-running-performance-in-a-cool-environment
#1
Calvin P Philp, Martin Buchheit, Cecilia M Kitic, Christopher T Minson, James W Fell
PURPOSE: To investigate whether a five-day cycling training block in the heat (35°C) in Australian rules footballers was superior to exercising at the same relative intensity in cool conditions (15°C) for improving intermittent running performance in a cool environment (<18°C). METHODS: Using a parallel-group design, 12 semi-professional football players performed five days of cycling exercise [70% heart rate reserve (HRR) for 45 min (5 x 50 min sessions in total)] in a hot (HEAT, 35±1°C, 56±9% RH) or cool environment (COOL, 15±3°C, 81±10% RH)...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27913509/the-post-thrombotic-syndrome
#2
Susan R Kahn
The post-thrombotic syndrome (PTS) is a frequent, sometimes disabling complication of deep vein thrombosis (DVT) that reduces quality of life and is costly. This article discusses risk factors for PTS after DVT and available means to prevent and treat PTS, with a focus on new information in the field. After DVT, PTS will develop in 20% to 50% of patients, and severe PTS, including venous ulcers, will develop in 5% to 10%. The principal risk factors for PTS are anatomically extensive DVT, recurrent ipsilateral DVT, persistent leg symptoms 1 month after acute DVT, obesity, and older age...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913427/intermittent-hypoxia-during-recovery-from-neonatal-hyperoxic-lung-injury-causes-long-term-impairment-of-alveolar-development-a-new-rat-model-of-bpd
#3
Anastasiya Mankouski, Crystal Kantores, Mathew J Wong, Julijana Ivanovska, Amish Jain, Eric J Benner, Stanley N Mason, A Keith Tanswell, Richard L Auten, Robert P Jankov
Bronchopulmonary dysplasia (BPD) is a chronic lung injury characterized by impaired alveologenesis that may persist into adulthood. Rat models of BPD using varying degrees of hyperoxia to produce injury either cause early mortality or spontaneously recover following removal of the inciting stimulus, thus limiting clinical relevance. We sought to refine an established rat model induced by exposure to 60% O2 from birth by following hyperoxia with intermittent hypoxia (IH). Rats exposed from birth to air or 60% O2 until day 14 were recovered in air with or without IH (FiO2 = 0...
December 2, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27913077/pyloric-obstruction-secondary-to-epicardial-pacemaker-implantation-a-case-report
#4
G Bedoya Nader, H B Kellihan, D E Bjorling, J McAnulty
A 10-year old Lhasa Apso dog was presented for an acute history of exercise intolerance and hind limb weakness. High grade second degree atrioventricular block with an atrial rate of 200 beats per minute, ventricular rate of 40 beats per minute and an intermittent ventricular escape rhythm, was diagnosed on electrocardiograph. A transdiaphragmatic, unipolar, epicardial pacemaker was implanted without immediate surgical complications. Severe vomiting was noted 12 h post-operatively. Abdominal ultrasound and a barium study supported a diagnosis of pyloric outflow obstruction and exploratory abdominal surgery was performed...
November 29, 2016: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/27908805/understanding-patient-acceptance-of-risk-with-treatment-options-for-intermittent-claudication
#5
Abigail Hm Morbi, Sophie Coles, Mostafa Albayati, Ian M Nordon, Cliff Shearman
OBJECTIVES: Intermittent claudication has a major impact on the quality of life and functional ability of the patient. However, when treating these patients, management is largely influenced by vascular surgeons' perceptions of risk. There is little information available regarding the level of risk that patients perceive to be acceptable, when considering complications of treatment. This study investigates patients' acceptance of risk associated with current management options for intermittent claudication and explores factors associated with greater risk acceptance...
November 28, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27904800/cervical-contribution-to-functional-shoulder-impingement-two-case-reports
#6
Steven Pheasant
BACKGROUND: Subacromial impingement is a common condition among overhead athletes. The cause of subacromial impingement can be multifactorial and often involves impaired rotator cuff function. CASE DESCRIPTION: The following cases outline the presentation, examination and intervention of two overhead athletes, a high school football quarterback and a collegiate swimmer, each presenting with signs and symptoms of subacromial impingement. The unique feature in each case was the manifestation of the cervical spine as the apparent source of rotator cuff weakness, which contributed to functional subacromial impingement although other overt signs of cervical or associated nerve root involvement were absent...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27903955/effect-of-diabetes-mellitus-on-walking-distance-parameters-after-supervised-exercise-therapy-for-intermittent-claudication-a-systematic-review
#7
David Hageman, Lindy Nm Gommans, Marc Rm Scheltinga, Joep Aw Teijink
Some believe that certain patients with intermittent claudication (IC) may be unsuitable for supervised exercise therapy (SET), based on the presence of comorbidities and the possibly increased risks. We conducted a systematic review (MEDLINE, EMBASE and CENTRAL) to summarize evidence on the potential influence of diabetes mellitus (DM) on the response to SET. Randomized and nonrandomized studies that investigated the effect of DM on walking distance after SET in patients with IC were included. Considered outcome measures were maximal, pain-free and functional walking distance (MWD, PFWD and FWD)...
November 30, 2016: Vascular Medicine
https://www.readbyqxmd.com/read/27895542/effect-of-tart-cherry-juice-on-recovery-and-next-day-performance-in-well-trained-water-polo-players
#8
Rachel McCormick, Peter Peeling, Martyn Binnie, Brian Dawson, Marc Sim
BACKGROUND: Tart Montmorency cherries contain high concentrations of phytochemicals and anthocyanins, which have recently been linked to improved athletic recovery and subsequent performance. To date however, previous work reporting promising results has focused on land-based endurance sports, with any potential benefits to team sports remaining unknown. As such, this investigation set-out to examine the effect of supplemental tart cherry juice (CJ) on recovery and next day athletic performance in highly-trained water-based team sport athletes over seven days...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27894796/cognitive-challenges-aging-and-neuromuscular-fatigue
#9
Ashley E Shortz, Ranjana K Mehta
Cognitive challenges, such as concurrent cognitive demands or prior cognitive fatigue, have shown to adversely impact neuromuscular fatigue, specifically in younger adults. Whether these relationships are similar for the aging population remains unclear. The aim of the study was to investigate the effects of different cognitive challenges on handgrip fatigue with aging. Ten younger (24.10 (1.79) years) and ten older (75.90 (7.80) years) females attended three experimental conditions (control, i.e., exercise only, cognitive fatigue prior to exercise, and concurrent mental arithmetic during exercise) on different days...
November 25, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27894792/pyruvate-dehydrogenase-e1%C3%AE-deficiency-presenting-as-recurrent-acute-proximal-muscle-weakness-of-upper-and-lower-extremities-in-an-8-year-old-boy
#10
Bülent Kara, Hülya Maraş Genç, Emek Uyur-Yalçın, Ayfer Sakarya-Güneş, Uğur Topçu, Serap Mülayim, Serdar Ceylaner
The mitochondrial pyruvate dehydrogenase enzyme complex (PDHC) plays an important role in aerobic energy metabolism and acid-base equilibrium. PDHC contains of 5 enzymes, 3 catalytic (E1, E2, E3) and 2 regulatory, as well as 3 cofactors and an additional protein (E3-binding protein) encoded by nuclear genes. The clinical presentation of PDHC deficiency ranges from fatal neonatal lactic acidosis to chronic neurologic dysfunction without lactic acidosis. Paroxysmal neurologic problems such as intermittent ataxia, episodic weakness, exercise-induced dystonia and recurrent demyelination may also be seen although they are rare...
November 9, 2016: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/27891259/neurocardiogenic-syncope-and-supraventricular-tachycardia-in-association-with-a-rare-congenital-aortic-valve-abnormality
#11
Yashwant Agrawal, Jagadeesh K Kalavakunta, Vishal Gupta, William Lapenna
We report a case of a 26-year-old woman who presented with multiple episodes of syncope over a five-months period of time. Transthoracic echocardiogram had shown a normal functioning quadricuspid aortic valve (QAV) which was also confirmed on a transesophageal echocardiogram. Computed tomographic angiography of heart and coronary arteries showed the QAV with equal size of all aortic cusps and normal coronary arteries. Intermittent chest pain and palpitations warranted an exercise stress test. The stress test revealed normal aerobic exertion, with achievement of 101% of maximal peak heart rate...
2016: Case Reports in Cardiology
https://www.readbyqxmd.com/read/27882611/chronic-lactate-supplementation-does-not-improve-blood-buffering-capacity-and-repeated-high-intensity-exercise
#12
L F Oliveira, V de Salles Painelli, K Nemezio, L S Gonçalves, G Yamaguchi, B Saunders, B Gualano, G G Artioli
Since there is conflicting data on the buffering and ergogenic properties of calcium lactate (CL), we investigated the effect of chronic CL supplementation on blood pH, bicarbonate, and high-intensity intermittent exercise performance. Sodium bicarbonate (SB) was used as a positive control. Eighteen athletes participated in this double-blind, placebo-controlled, crossover, fully counterbalanced study. All participants underwent three different treatments: placebo (PL), CL, and SB. The dose was identical in all conditions: 500 mg/kg BM divided into four daily individual doses of 125 mg/kg BM, for five consecutive days, followed by a 2-7-day washout period...
November 23, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27876480/noise-dosimetry-for-tactical-environments
#13
Christopher J Smalt, Joe Lacirignola, Shakti K Davis, Paul T Calamia, Paula P Collins
Noise exposure and the subsequent hearing loss are well documented aspects of military life. Numerous studies have indicated high rates of noise-induced hearing injury (NIHI) in active-duty service men and women, and recent statistics from the U.S. Department of Veterans Affairs indicate a population of veterans with hearing loss that is growing at an increasing rate. In an effort to minimize hearing loss, the U.S. Department of Defense (DoD) updated its Hearing Conservation Program in 2010, and also has recently revised the DoD Design Criteria Standard Noise Limits (MIL-STD-1474E) which defines allowable noise levels in the design of all military acquisitions including weapons and vehicles...
November 20, 2016: Hearing Research
https://www.readbyqxmd.com/read/27876411/disruption-of-mitochondrial-quality-control-in-peripheral-artery-disease-new-therapeutic-opportunities
#14
REVIEW
Cintia B Ueta, Katia S Gomes, Márcio A Ribeiro, Daria Mochly-Rosen, Julio C B Ferreira
Peripheral artery disease (PAD) is a multifactorial disease initially triggered by reduced blood supply to the lower extremities due to atherosclerotic obstructions. It is considered a major public health problem worldwide, affecting over 200 million people. Management of PAD includes smoking cessation, exercise, statin therapy, antiplatelet therapy, antihypertensive therapy and surgical intervention. Although these pharmacological and non-pharmacological interventions usually increases blood flow to the ischemic limb, morbidity and mortality associated with PAD continue to increase...
November 19, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27867360/inflammatory-cytokines-and-bdnf-response-to-high-intensity-intermittent-exercise-effect-the-exercise-volume
#15
Carolina Cabral-Santos, Carlos I M Castrillón, Rodolfo A T Miranda, Paula A Monteiro, Daniela S Inoue, Eduardo Z Campos, Peter Hofmann, Fábio S Lira
The purpose of this study was to compare the effects of two similar high-intensity intermittent exercises (HIIE) but different volume 1.25 km (HIIE1.25) and 2.5 km (HIIE2.5) on inflammatory and BDNF responses. Ten physically active male subjects (age 25.22 ± 1.74 years, body mass 78.98 ± 7.31 kg, height 1.78 ± 0.06 m, VO2peak 59.94 ± 9.38 ml·kg·min(-1)) performed an incremental treadmill exercise test and randomly completed two sessions of HIIE on a treadmill (1:1 min at vVO2max with passive recovery)...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27865004/long-term-effects-of-high-intensity-interval-training-in-heart-transplant-recipients-a-5-year-follow-up-study-of-a-randomized-controlled-trial
#16
Marianne Yardley, Lars Gullestad, Bjørn Bendz, Elisabeth Bjørkelund, Katrine Rolid, Satish Arora, Kari Nytrøen
BACKGROUND: Previously studies have demonstrated that high-intensity interval training(HIT) is superior to moderate-continuous exercise in general and in cardiovascular diseases. Recently we also found HIT safe and efficient after heart transplantation(HTx). This study reports the 5-year long-term effects. DESIGN AND METHODS: Forty-one HTx-patients who had completed the previous 12-month randomized controlled trial, comparing HIT-intervention with usual care, were eligible...
November 12, 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/27857951/validation-of-an-ingestible-temperature-data-logging-and-telemetry-system-during-exercise-in-the-heat
#17
Gavin J S Travers, David S Nichols, Abdulaziz Farooq, Sébastien Racinais, Julien D Périard
Aim: Intestinal temperature telemetry systems are promising monitoring and research tools in athletes. However, the additional equipment that must be carried to continuously record temperature data limits their use to training. The purpose of this study was to assess the validity and reliability of a new gastrointestinal temperature data logging and telemetry system (e-Celsius™) during water bath experimentation and exercise trials. Materials and Methods: Temperature readings of 23 pairs of e-Celsius (TeC) and VitalSense (TVS) ingestible capsules were compared to rectal thermistor responses (Trec) at 35, 38...
April 2016: Temperature: Multidisciplinary Biomedical Journal
https://www.readbyqxmd.com/read/27853876/impact-of-non-invasive-ventilation-on-sympathetic-nerve-activity-in-chronic-obstructive-pulmonary-disease
#18
Helge Haarmann, Jan Folle, Xuan Phuc Nguyen, Peter Herrmann, Karsten Heusser, Gerd Hasenfuß, Stefan Andreas, Tobias Raupach
PURPOSE: Chronic obstructive pulmonary disease (COPD) is associated with elevated sympathetic nerve activity, which is probably linked to an increased cardiovascular risk, and may contribute to muscle dysfunction by heightened muscle vasoconstrictor drive. We hypothesized that resistive unloading of respiratory muscles by intermittent non-invasive ventilation (NIV) reduces sympathetic tone at rest and during subsequent handgrip exercise in patients with COPD. METHODS: Muscle sympathetic nerve activity (MSNA) in the peroneal nerve, heart rate, blood pressure, CO2, and SpO2 were continuously recorded in 5 COPD patients with intermittent NIV and 11 control COPD patients without NIV...
November 16, 2016: Lung
https://www.readbyqxmd.com/read/27852613/vitamin-c-enriched-gelatin-supplementation-before-intermittent-activity-augments-collagen-synthesis
#19
Gregory Shaw, Ann Lee-Barthel, Megan Lr Ross, Bing Wang, Keith Baar
BACKGROUND: Musculoskeletal injuries are the most common complaint in active populations. More than 50% of all injuries in sports can be classified as sprains, strains, ruptures, or breaks of musculoskeletal tissues. Nutritional and/or exercise interventions that increase collagen synthesis and strengthen these tissues could have an important effect on injury rates. OBJECTIVE: This study was designed to determine whether gelatin supplementation could increase collagen synthesis...
November 16, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27849114/effects-of-in-season-short-term-aerobic-and-high-intensity-interval-training-program-on-repeated-sprint-ability-and-jump-performance-in-handball-players
#20
Souhail Hermassi, Jørgen Ingebrigtsen, René Schwesig, Georg Fieseler, Karl S Delank, Karim Chamari, Roy J Shephard, Mohamed S Chelly
BACKGROUND: This study examined the effects of a 7-week in-season aerobic and high-intensity interval-training program on performance tests linked to successful handball play (e.g., repeated sprint and jumping ability). METHODS: Thirty participants (age 17.0 ± 1.2 years, body mass 81.1 ± 3.4 kg, height 1.82± 0.07 m) performed a Yo-Yo Intermittent Recovery Test level 1 (Yo-Yo IR1), a squat (SJ) and a countermovement jump test (CMJ), as well as a repeated sprint ability test (RSA)...
November 16, 2016: Journal of Sports Medicine and Physical Fitness
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