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Intermittent exercise

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https://www.readbyqxmd.com/read/28217234/inappropriate-shocks-from-a-subcutaneous-implantable-cardioverter-defibrillator-due-to-oversensing-during-periods-of-rate-related-bundle-branch-block
#1
Maria João Sousa, Tim Betts
The subcutaneous implantable cardioverter-defibrillator (S-ICD) is a novel technology with proven efficacy in sudden cardiac death prevention; however, there is a lack of long-term safety data. We describe the case of a 55-year-old female patient implanted with an S-ICD due to idiopathic ventricular fibrillation, who subsequently presented with inappropriate shocks leading to ventricular fibrillation that was successfully terminated by another shock. Inappropriate shocks were due to intermittent T wave oversensing during periods of rate-dependent right bundle branch block...
February 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28215907/spinal-arteriovenous-fistulas-in-adults-management-of-a-series-of-patients-treated-at-a-neurology-department
#2
G Ortega-Suero, J Porta Etessam, M Moreu Gamazo, G Rodríguez-Boto
OBJECTIVE: Spinal arteriovenous fístulas (SAVF), a rare type of vascular malformation, account for 3% of all spinal cord lesions. Without early treatment, the associated morbidity is high; furthermore, SAVF pose a major diagnostic challenge. Our purpose was to evaluate the clinical characteristics of SAVF and review their progress after treatment to determine whether it may be too late for treatment in some cases. METHODS: We present a retrospective series of 10 patients diagnosed with SAVF and treated at a tertiary hospital during a 3-year period...
February 16, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28209743/skeletal-muscle-bioenergetics-during-all-out-exercise-mechanistic-insight-into-the-oxygen-uptake-slow-component-and-neuromuscular-fatigue
#3
Ryan M Broxterman, Gwenael Layec, Thomas J Hureau, Markus Amann, Russell S Richardson
Although commonly used, the physiological mechanisms underlying all-out exercise performance are still unclear and an in-depth assessment of skeletal muscle bioenergetics is lacking. Therefore, phosphorous magnetic resonance spectroscopy ((31)P-MRS) was utilized to assess skeletal muscle bioenergetics during a 5-min all-out intermittent isometric knee-extensor protocol in 8 healthy men. The metabolic perturbation, adenosine triphosphate (ATP) synthesis rates, ATP cost of contraction, and mitochondrial capacity were determined from intramuscular concentrations of phosphocreatine (PCr), inorganic phosphate (Pi), diprotonated phosphate (H2PO4⁻ ), and pH...
February 16, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28209728/evaluation-of-cell-therapy-on-exercise-performance-and-limb-perfusion-in-peripheral-artery-disease-the-cctrn-patients-with-intermittent-claudication-injected-with-aldh-bright-cells-pace-trial
#4
Emerson C Perin, Michael P Murphy, Keith L March, Roberto Bolli, John Loughran, Phillip C Yang, Nicholas J Leeper, Ronald L Dalman, Jason Q Alexander, Timothy D Henry, Jay H Traverse, Carl J Pepine, R David Anderson, Scott Berceli, James T Willerson, Raja Muthupillai, Amir A Gahremanpour, Ganesh Raveendran, Omaida C Velazquez, Joshua M Hare, Ivonne H Schulman, Vijaykumar S Kasi, William R Hiatt, Bharath Ambale-Venkatesh, João A Lima, Doris A Taylor, Micheline M Resende, Adrian P Gee, April G Durett, Jeannette Bloom, Sara Richman, Patricia G'Sell, Shari Williams, Fouzia Khan, Elsie G Ross, Michelle R Santoso, JoAnne Goldman, Dana Leach, Eileen Handberg, Benjamin Y C Cheong, Nichole A Piece, Darcy DiFede, Barb Bruhn-Ding, Emily Caldwell, Judy Bettencourt, Dejian Lai, Linda B Piller, Lara M Simpson, Michelle Cohen, Shelly L Sayre, Rachel W Vojvodic, Lem Moyé, Ray F Ebert, Robert D Simari, Alan T Hirsch
Background -Atherosclerotic peripheral artery disease (PAD) affects 8-12% of Americans over 65 and is associated with a major decline in functional status, increased myocardial infarction and stroke rates, and increased risk of ischemic amputation. Current treatment strategies for claudication have limitations. PACE is an NHLBI-sponsored, randomized, double-blind, placebo-controlled phase 2, exploratory clinical trial designed to assess safety and efficacy of autologous bone marrow-derived aldehyde dehydrogenase bright (ALDHbr) cells in PAD patients and to explore associated claudication physiologic mechanisms...
February 16, 2017: Circulation
https://www.readbyqxmd.com/read/28204862/effect-of-constant-predictable-and-unpredictable-motor-tasks-on-motor-performance-and-blood-markers-of-stress
#5
Laura Kyguoliene, Albertas Skurvydas, Nerijus Eimantas, Neringa Baranauskienė, Dalia Mickeviciene, Daiva Urboniene, Margarita Cernych, Marius Brazaitis
An unfamiliar or novel physical stimulus induces activation of dopaminergic neurons within the brain and greater activity in areas involved in emotion; considering this, we aimed to establish whether unpredictable prolonged (fatiguing) motor task (vs. constant vs. predictable) evokes greater dopaminergic activity, enhances neuromuscular performance, motor accuracy, and perception of effort, and delays overall central fatigue. Fifteen healthy male volunteers (aged 22 ± 4 years) were required to perform 1 of 3 exercise trials (at least 1 week apart) of 100 intermittent isometric contraction (IIC) tasks involving knee extensions at 60° flexion...
February 16, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28203205/intraocular-pressure-is-a-poor-predictor-of-hydration-status-following-intermittent-exercise-in-the-heat
#6
Ian B Stewart, Brittany Dias, David N Borg, Aaron J E Bach, Beatrix Feigl, Joseph T Costello
Current hydration assessments involve biological fluids that are either compromised in dehydrated individuals or require laboratory equipment, making timely results unfeasible. The eye has been proposed as a potential site to provide a field-based hydration measure. The present study evaluated the efficacy and sensitivity of intraocular pressure (IOP) to assess hydration status. Twelve healthy males undertook two 150 min walking trials in 40°C 20% relative humidity. One trial matched fluid intake to body mass loss (control, CON) and the other had fluid restricted (dehydrated, DEH)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28199402/short-or-long-rest-intervals-during-repeated-sprint-training-in-soccer
#7
F Marcello Iaia, Matteo Fiorenza, Luca Larghi, Giampietro Alberti, Grégoire P Millet, Olivier Girard
The present study compared the effects of two repeated-sprint training (RST) programs, differing in duration of the between-sprint rest intervals, on various soccer-related exercise performances. For 5 weeks during the competitive season, twenty-nine young trained male soccer players either replaced two of their habitual fitness conditioning sessions with RST characterized by short (5-15; n = 9) or long (5-30; n = 10) rest intervals, or served as control (n = 10). The 5-15 and 5-30 protocols consisted of 6 repetitions of 30-m (~5 s) straight-line sprints interspersed with 15 s or 30 s of passive recovery, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28177702/modulation-of-mitochondrial-biomarkers-by-intermittent-hypobaric-hypoxia-and-aerobic-exercise-after-eccentric-exercise-in-trained-rats
#8
David Rizo-Roca, Juan Gabriel Ríos-Kristjánsson, Cristian Núñez-Espinosa, Estela Santos-Alves, José Magalhães, António Ascensão, Teresa Pagès, Ginés Viscor, Joan Ramon Torrella
Unaccustomed eccentric contractions induce muscle damage, calcium homeostasis disruption and mitochondrial alterations. Since exercise and hypoxia are known to modulate mitochondrial function, we aimed to analyze the effects on eccentric exercise-induced muscle damage (EEIMD), in trained rats, of two recovery protocols based on: 1) intermittent hypobaric hypoxia (IHH) and 2) IHH followed by exercise. The expression of biomarkers related to mitochondrial biogenesis, dynamics, oxidative stress and bioenergetics was evaluated...
February 2, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28153608/the-effect-of-intermittent-lower-limb-occlusion-on-recovery-following-exercise-induced-muscle-damage-a-randomized-controlled-trial
#9
Will Page, Rachael Swan, Stephen D Patterson
OBJECTIVES: The purpose of this investigation was to examine the effectiveness of intermittent lower limb occlusion in augmenting recovery from exercise induced muscle damage (EIMD) in physically active males. DESIGN: Randomized controlled trial, double blind. METHODS: Sixteen healthy recreationally active male participants were randomly assigned to an intermittent occlusion (OCC; n=8) or control (SHAM; n=8) group. The EIMD protocol comprised of 100 drop-jumps, from a 0...
January 24, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28150471/the-effect-of-4-weeks-fixed-and-mixed-intermittent-hypoxic-training-iht-on-respiratory-metabolic-and-acid-base-response-of-capillary-blood-during-submaximal-bicycle-exercise-in-male-elite-taekwondo-players
#10
Hun-Young Park, Sub Sunoo, Sang-Seok Nam
Purpose: The purpose of our study was to determine the effectiveness of 4 weeks fixed and mixed intermittent hypoxic training (IHT) and its difference from exercise training at sea-level on exercise load, respiratory metabolic and acid-base response of capillary blood during 80% maximal heart rate (HRmax) bicycle exercise in male elite Taekwondo players. Methods: Male elite Taekwondo players (n = 25 out of 33) were randomly assigned to training at sea-level (n = 8, control group), training at 16...
December 31, 2016: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28149381/comparison-between-two-types-of-anaerobic-speed-endurance-training-in-competitive-soccer-players
#11
Magni Mohr, Peter Krustrup
The purpose of the present study was to examine the effects of additional in-season speed endurance production versus speed endurance maintenance training regimes on performance in competitive male soccer players. In a randomised controlled trial 18 male sub-elite players were exposed to additional speed endurance production (SEP) or speed endurance maintenance (SEM) training (two additional sessions/wk for 4 weeks) during the competitive season. Players performed the Yo-Yo intermittent recovery level 2 test (YYIR2) and a repeated sprint test (RST) pre- and post-intervention...
June 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28149347/application-of-a-physiological-strain-index-in-evaluating-responses-to-exercise-stress-a-comparison-between-endurance-and-high-intensity-intermittent-trained-athletes
#12
Ilona Pokora, Aleksandra Żebrowska
The study evaluated differences in response to exercise stress between endurance and high-intensity intermittent trained athletes in a thermoneutral environment using a physiological strain index (PSI). Thirty-two subjects participated in a running exercise under normal (23°C, 50% RH) conditions. The group included nine endurance trained athletes (middle-distance runners - MD), twelve high-intensity intermittent trained athletes (soccer players - HIIT) and eleven students who constituted a control group. The exercise started at a speed of 4 km·h(-1) which was increased every 3 min by 2 km·h(-1) to volitional exhaustion...
April 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28145733/why-do-team-sport-athletes-drink-fluid-in-excess-when-exercising-in-cool-conditions
#13
Melissa J Bargh, Roderick F G J King, Michael P Gray, Ben Jones
This study assessed the potential physiological and perceptual drivers of fluid intake and thirst sensation during intermittent exercise. Ten male rugby players (17 ± 1 years, stature: 179.1 ± 4.2 cm, body mass (BM): 81.9 ± 8.1 kg) participated in six 6-min small-sided games, interspersed with 2 min rest, where fluid intake was ad libitum during rest periods. Pre- and postmeasurements of BM, subjective ratings (thirst, thermal comfort, thermal sensation, mouth dryness), plasma osmolality (POsm), serum sodium concentration (S[Na(+)]), haematocrit and haemoglobin (to calculate plasma volume change; PV) were taken...
November 10, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28143367/does-a-resistance-exercise-session-with-continuous-or-intermittent-blood-flow-restriction-promote-muscle-damage-and-increase-oxidative-stress
#14
Gabriel R Neto, Jefferson S Novaes, Verônica P Salerno, Michel M Gonçalves, Gilmário R Batista, Maria S Cirilo-Sousa
The aim of this study was to compare the effect of low-load resistance exercise (LLRE) with continuous and intermittent blood flow restriction (BFR) on the creatine kinase (CK), lactate dehydrogenase (LDH), protein carbonyl (PC), thiobarbituric acid-reactive substance (TBARS) and uric acid (UA) levels in military men. The study included 10 recreationally trained men aged 19 ± 0.82 years who underwent the following experimental protocols in random order on separate days (72-96 h): 4 LLRE sessions at a 20% 1RM (one-repetition maximum [1RM]) with continuous BFR (LLRE + CBFR); 4 LLRE sessions at 20% 1RM with intermittent BFR (LLRE + IBFR) and 4 high-intensity resistance exercise (HIRE) sessions at 80% 1RM...
January 31, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28134590/supervised-exercise-therapy-in-the-management-of-peripheral-arterial-disease-an-assessment-of-compliance
#15
Thomas M Aherne, Elrasheid A H Kheirelseid, Michael Boland, Shane Carr, Thekra Al-Zabi, Khalid Bashar, Daragh Moneley, Austin Leahy, Noel McCaffrey, Peter Naughton
BACKGROUND: Supervised exercise therapy (SET) is an effective option in the management of peripheral arterial disease (PAD). Unfortunately, poor compliance remains prevalent. This study aimed to assess patient exercise compliance and to identify factors influencing symptomatic improvement and SET participation. PATIENTS AND METHODS: Data regarding attendance at SET for this cohort study were extracted from a prospectively maintained database of patients with claudication attending SET at Dublin City University...
January 30, 2017: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/28122719/high-intensity-intermittent-exercise-training-with-chlorella-intake-accelerates-exercise-performance-and-muscle-glycolytic-and-oxidative-capacity-in-rats
#16
Naoki Horii, Natsuki Hasegawa, Shumpei Fujie, Masataka Uchida, Eri Miyamoto-Mikami, Takeshi Hashimoto, Izumi Tabata, Motoyuki Iemitsu
The purpose of this study was to investigate the effect of chronic chlorella intake alone or in combination with high-intensity intermittent exercise (HIIE) training on exercise performance and muscle glycolytic and oxidative metabolism in rats. Forty male Sprague-Dawley rats were randomly assigned to the four groups: sedentary control, chlorella intake (0.5% chlorella powder in normal feed), HIIE training, and combination of HIIE training and chlorella intake for 6 weeks (n = 10 each group). HIIE training comprised 14 repeats of a 20-s swimming session with a 10-s pause between sessions, while bearing a weight equivalent to 16% of body weight, 4 days/week...
January 25, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28119886/influence-to-high-intensity-intermittent-and-moderate-intensity-continuous-exercise-on-indices-of-cardio-inflammatory-health-in-men
#17
Carolina C Santos, Tiego A Diniz, Daniela S Inoue, José Gerosa-Neto, Valéria L G Panissa, Gustavo Duarte Pimentel, Eduardo Z Campos, Peter Hofmann, Fábio S Lira
The aim of this study was to evaluate the influence to acute exercises performed in different intensities with volume equalized (5 km) on indices of cardio-inflammatory health. Twelve physically active male subjects (age, 23.22±5.47 years; height, 174.75±5.80 m; weight, 75.13±6.61 kg; maximal oxygen uptake, 52.92 mL/kg/min), after determination of peak oxygen uptake (VO2Peak) and the speed associated with VO2Peak (sVO2Peak), completed two randomly experimental trials: high-intensity intermittent exercise (HIIE: 1:1 at 100% sVO2Peak) and moderate-intensity continuous exercise (MICE: 70% sVO2Peak)...
December 2016: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28118308/delayed-onset-muscle-soreness-and-perceived-exertion-following-blood-flow-restriction-exercise
#18
Christopher R Brandner, Stuart A Warmington
The purpose of this study was to determine the perceptual responses to resistance exercise with either heavy-loads (80% 1 repetition maximum [1-RM]), light-loads (20% 1-RM), or light-loads in combination with blood flow restriction (BFR). Despite the use of light-loads, it has been suggested that the adoption of BFR resistance exercise may be limited due to increases in delayed onset muscle soreness (DOMS) and perceived exertion. Seventeen healthy untrained males participated in this balanced, randomized cross-over study...
January 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28116261/palmaris-longus-tendon-grafting-for-extensor-pollicis-longus-tendon-rupture-bscrew-tip-after-20-years
#19
Jitendra Nath Pal, Amiya Kumar Bera, Amarendra Nath Roy, Wasim Bari
INTRODUCTION: Spontaneous ruptures of extension pollicis longus tendon predominantly occur after undisplaced or minimally displaced distal radial fracture near Lister tubercle. Systemic inflammatory diseases and systemic or local steroid, mechanical causes like bony ridges, presence of bone plate or external fixator pin may precipitate this. Repetitive uses in certain occupation like cooking, cow milking, tailoring and direct trauma in kick boxer are also identified as cause. In this study it is caused by screw tip that also after 20 years...
July 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28096042/acute-effect-of-intermittent-and-continuous-aerobic-exercise-on-release-of-cardiac-troponin-t-in-sedentary-men
#20
Rouhollah Ranjbar, Mohammad Amin Ahmadi, Abdossaleh Zar, Peter Krustrup
BACKGROUND: Studies have shown that acute exercise can increase serum concentrations of cardiac biomarkers, including cardiac troponin T (cTnT). We investigated the acute effects of intermittent (IE) and continuous (CE) exercise at the same cardiac workload on myocardial necrosis biomarkers in sedentary men. METHODS: Eleven sedentary healthy men aged 22.3±1.9years completed the study. The subjects were divided into two groups and performed, in random order, IE (intensity alternating between 50% (2min) and 80% (1min) HRreserve) or CE (60% HRreserve)...
January 9, 2017: International Journal of Cardiology
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