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Intermittent exercise

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https://www.readbyqxmd.com/read/28437655/peripheral-artery-disease-redox-signaling-oxidative-stress-basic-and-clinical-aspects
#1
REVIEW
Sebastian Steven, Andreas Daiber, Jörn F Dopheide, Thomas Münzel, Christine Espinola-Klein
Reactive oxygen and nitrogen species (ROS and RNS, e.g. H2O2, nitric oxide) confer redox regulation of essential cellular signaling pathways such as cell differentiation, proliferation, migration and apoptosis. At higher concentrations, ROS and RNS lead to oxidative stress and oxidative damage of biomolecules (e.g. via formation of peroxynitrite, fenton chemistry). Peripheral artery disease (PAD) is characterized by severe ischemic conditions in the periphery leading to intermittent claudication and critical limb ischemia (end stage)...
April 13, 2017: Redox Biology
https://www.readbyqxmd.com/read/28436583/physical-activity-and-exercise-for-chronic-pain-in-adults-an-overview-of-cochrane-reviews
#2
REVIEW
Louise J Geneen, R Andrew Moore, Clare Clarke, Denis Martin, Lesley A Colvin, Blair H Smith
BACKGROUND: Chronic pain is defined as pain lasting beyond normal tissue healing time, generally taken to be 12 weeks. It contributes to disability, anxiety, depression, sleep disturbances, poor quality of life, and healthcare costs. Chronic pain has a weighted mean prevalence in adults of 20%.For many years, the treatment choice for chronic pain included recommendations for rest and inactivity. However, exercise may have specific benefits in reducing the severity of chronic pain, as well as more general benefits associated with improved overall physical and mental health, and physical functioning...
April 24, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28435687/an-evaluation-of-low-volume-high-intensity-intermittent-training-hiit-for-health-risk-reduction-in-overweight-and-obese-men
#3
Benjamin M Kelly, Soteris Xenophontos, James A King, Myra A Nimmo
ᅟ: Both sprint interval training (SIT) and high-intensity intermittent training (HIIT) have been described as time-efficient strategies for inducing favourable metabolic and cardiorespiratory adaptations in healthy and diseased participants. BACKGROUND: To date, little attention has been given to profiling the potential health benefits of HIIT or modified HIIT training within overweight and obese cohorts with particular focus on inflammation. Within this pilot trial, we tested the hypothesis that 6 sessions of HIIT performed over 2 weeks with 1-2 days' rest would improve aerobic capacity, glucose metabolism and inflammatory profile in an overweight and obese male cohort...
2017: BMC Obesity
https://www.readbyqxmd.com/read/28426269/2016-international-orthoptic-congress-burian-lecture-folklore-or-evidence
#4
Anna M Horwood
The theme of the 2016 Burian Lecture is how our understanding of strabismus has been changed by the research carried out in our laboratory in Reading over the years. Accommodation and convergence are fundamental to orthoptics, but actual responses have often been very different compared to what we had expected. This paper outlines how our laboratory's understanding of common issues such as normal development of accommodation and convergence, their linkage, intermittent strabismus, anisometropia, orthoptic exercises, and risk factors for strabismus have changed...
April 20, 2017: Strabismus
https://www.readbyqxmd.com/read/28422524/straight-line-and-change-of-direction-intermittent-running-in-professional-soccer-players
#5
Mohamed S Fessi, Fayçal Farhat, Alexandre Dellal, James J Malone, Wassim Moalla
PURPOSE: The present study aimed to investigate the difference between straight-line (STL) and change of direction (COD) intermittent running exercises in soccer players. METHODS: Seventeen male professional soccer players performed the agility T-test and 6 intermittent running exercises: 10s at 130% of maximal aerobic speed (MAS) alternated with 10s of rest (10-10), 15s at 120% of MAS alternated with 15s of rest (15-15) and 30s at 110% of MAS alternated with 30s of rest (30-30) both in STL and with COD...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28416899/the-efficacy-of-a-discontinuous-graded-exercise-test-in-measuring-peak-oxygen-uptake-in-children-aged-8-to-10-years
#6
D Lambrick, J Jakeman, R Grigg, S Kaufmann, J Faulkner
As children's natural activity patterns are highly intermittent in nature, and characterised by rapid changes from rest to vigorous physical activity, discontinuous exercise tests may be considered ecologically valid for this population group. This study compared the peak physiological responses from a discontinuous and continuous graded exercise test (GXT_D, GXT_C, respectively) during treadmill exercise in children. Twenty-one healthy children (9.6 ± 0.6 y) completed GXT_D and GXT_C in a randomised order, separated by 72-hours...
March 2017: Biology of Sport
https://www.readbyqxmd.com/read/28409397/the-effect-of-high-intensity-aerobic-interval-training-on-markers-of-systemic-inflammation-in-sedentary-populations
#7
Nicholas G Allen, Samuel M Higham, Amy E Mendham, Tegan E Kastelein, Penelope S Larsen, Rob Duffield
PURPOSE: This study examined the effects of high-intensity interval training (HIIT; 30 s sprint, 4-5 min passive recovery) and prolonged intermittent sprint training (PIST; 10 s sprint, 2-3 min moderate exercise) on the systemic inflammatory markers C-reactive protein (CRP) and tumor necrosis factor-α (TNF-α), aerobic capacity, and anthropometry in a middle-aged, sedentary population. METHODS: Fifty-five sedentary adults (age 49.2 ± 6.1 years) were randomised into HIIT (n = 20), PIST (n = 21), or a sedentary control group (CTRL n = 14)...
April 13, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28408695/effect-of-exercise-timing-on-elevated-postprandial-glucose-levels
#8
Yoichi Hatamoto, Ryoma Goya, Yosuke Yamada, Eichi Yoshimura, Sena Nishimura, Yasuki Higaki, Hiroaki Tanaka
There is no consensus regarding optimal exercise timing for reducing post prandial glucose (PPG). The purpose of the present study was to determine the most effective exercise timing. Eleven participants completed four different exercise patterns 1) no exercise; 2) preprandial exercise (jogging); 3) postprandial exercise; and 4) brief periodic exercise intervention (3 sets of 1 min jogging + 30 s rest, every 30 min, 20 times total)] in a random order separated by a minimum of five days. Pre- and postprandial exercise consisted of 20 sets of intermittent exercise (1 min jogging + 30 s rest per set) repeated 3 times per day...
April 13, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28402178/top-10-research-questions-related-to-youth-aerobic-fitness
#9
Neil Armstrong
Peak oxygen uptake ([Formula: see text]2) is internationally recognized as the criterion measure of youth aerobic fitness, but despite pediatric data being available for almost 80 years, its measurement and interpretation in relation to growth, maturation, and health remain controversial. The trainability of youth aerobic fitness continues to be hotly debated, and causal mechanisms of training-induced changes and their modulation by chronological age, biological maturation, and sex are still to be resolved...
April 12, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28398944/alpine-skiing-as-winter-time-high-intensity-training
#10
Thomas Stöggl, Christoph Schwarzl, Edith E Müller, Masaru Nagasaki, Julia Stöggl, Martin Schönfelder, Josef Niebauer
INTRODUCTION: To counteract the winter activity deficit, we set out to analyze cardiorespiratory and metabolic responses of two high intensity training (HIT) protocols during alpine skiing (AS), cross-country skiing (XCS) and indoor cycling (IC) and the effects of sex, age and fitness level in this comparison. METHODS: Nineteen healthy subjects (two age and fitness groups, both sexes) performed AS, XCS, and IC with measurements of oxygen uptake (VO2), energy expenditure (EE), heart rate (HR), lactate, blood glucose and rate of perceived exertion, determined during 4-min of continuous high intensity (HITc: 90% HRmax for XCS and IC or short turn skiing during AS) or 10-min intermittent HIT [HITint: 5x1' high intensity (>90% HRmax or short turn skiing), 1' active recovery]...
April 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28389218/walking-training-at-the-heart-rate-of-pain-threshold-improves-cardiovascular-function-and-autonomic-regulation-in-intermittent-claudication-a-randomized-controlled-trial
#11
Marcel Chehuen, Gabriel G Cucato, Celso Ricardo F Carvalho, Raphael M Ritti-Dias, Nelson Wolosker, Anthony S Leicht, Cláudia Lúcia M Forjaz
OBJECTIVES: This study investigated the effects of walking training (WT) on cardiovascular function and autonomic regulation in patents with intermittent claudication (IC). DESIGN: Randomized controlled trial. METHODS: Forty-two male patients with IC (≥50years) were randomly allocated into two groups: control (CG, n=20, 30min of stretching exercises) and WT (WTG, n=22, 15 bouts of 2min of walking interpolated by 2min of upright rest-walking intensity was set at the heart rate of pain threshold)...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28389216/effects-of-cooling-before-and-during-simulated-match-play-on-thermoregulatory-responses-of-athletes-with-tetraplegia
#12
Katy E Griggs, George Havenith, Thomas A W Paulson, Michael J Price, Victoria L Goosey-Tolfrey
OBJECTIVES: Athletes with high level spinal cord injuries (tetraplegia) are under greater thermal strain during exercise than the able-bodied. The purpose of this study was to investigate the effectiveness of pre-cooling using an ice vest and the combination of pre-cooling and cooling during play using water sprays in athletes with tetraplegia. DESIGN: Counter-balanced, cross-over design. METHODS: Eight wheelchair rugby players with tetraplegia completed a 60min intermittent sprint protocol (ISP) on a wheelchair ergometer in 20...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28388782/high-intensity-intermittent-exercise-and-autonomic-modulation-effects-of-different-volume-sessions
#13
Carlos Iván Mesa Castrillón, Rodolfo Augusto Travagin Miranda, Carolina Cabral-Santos, Lais Manata Vanzella, Bruno Rodrigues, Luiz Carlos Marques Vanderlei, Fábio Santos Lira, Eduardo Zapaterra Campos
The aim of this study was to compare heart rate variability (HRV) recovery after 2 sessions of high-intensity intermittent exercise at different volumes (1.25 km [HIIE1.25] and 2.5 km [HIIE2.5]). 13 participants determined their maximal aerobic speed (MAS) and completed 2 HIIE (1:1 at 100% MAS) trials. The heart rate was recorded before and after each session. HRV indicators were calculated according to time (RMSSD and SDNN) and frequency (LF, HF and LF/HF ratio) domains. SDNN and RMSSD presented effect of test (F=20...
April 7, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28385410/comparative-efficacy-of-endovascular-revascularization-versus-supervised-exercise-training-in-patients-with-intermittent-claudication-meta-analysis-of-randomized-controlled-trials
#14
Ambarish Pandey, Subhash Banerjee, Christian Ngo, Purav Mody, Steven P Marso, Emmanouil S Brilakis, Ehrin J Armstrong, Jay Giri, Marc P Bonaca, Aruna Pradhan, Anthony A Bavry, Dharam J Kumbhani
OBJECTIVES: The authors performed a meta-analysis of randomized controlled trials to compare the efficacy of initial endovascular treatment with or without supervised exercise training (SET) versus SET alone in patients with intermittent claudication. BACKGROUND: Current guidelines recommend SET as the initial treatment modality for patients with intermittent claudication, in addition to optimal medical therapy. The role of endovascular therapy as primary treatment for claudication has been controversial...
April 10, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28379172/very-low-volume-sprint-interval-exercise-suppresses-subjective-appetite-lowers-acylated-ghrelin-and-elevates-glp-1-in-overweight-individuals-a-pilot-study
#15
Adrian Holliday, Andrew K Blannin
High-intensity exercise has been shown to elicit a transient suppression of appetite and create a more anorexigenic profile of appetite-associated hormones. It is yet to be fully elucidated whether such a response is observed following very low-volume, intermittent exercise at supramaximal intensity in those who are overweight. Eight overweight individuals (BMI 27.7 ± 1.7 kg·m²) completed resting (REST) and exercise (EX) trials in a counterbalanced order. EX consisted of 4 × 30 s "flat-out" cycling on an ergometer (adapted Wingate test)...
April 5, 2017: Nutrients
https://www.readbyqxmd.com/read/28368090/bypass-surgery-for-chronic-lower-limb-ischaemia
#16
REVIEW
George A Antoniou, George S Georgiadis, Stavros A Antoniou, Ragai R Makar, Jonathan D Smout, Francesco Torella
BACKGROUND: Bypass surgery is one of the mainstay treatments for patients with critical lower limb ischaemia (CLI). This is the second update of the review first published in 2000. OBJECTIVES: To assess the effects of bypass surgery in patients with chronic lower limb ischaemia. SEARCH METHODS: For this update, the Cochrane Vascular Group searched its trials register (last searched October 2016) and the Cochrane Central Register of Controlled Trials (CENTRAL) in the Cochrane Library (last searched Issue 9, 2016)...
April 3, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28365377/a-three-month-home-exercise-programme-augmented-with-nordic-poles-for-patients-with-intermittent-claudication-enhances-quality-of-life-and-continues-to-improve-walking-distance-and-compliance-after-one-year
#17
C Oakley, C Spafford, J D Beard
OBJECTIVE/BACKGROUND: The objective of this study was to collect 1 year follow-up information on walking distance, speed, compliance, and cost in patients with intermittent claudication who took part in a previously reported 12 week randomised clinical trial of a home exercise programme augmented with Nordic pole walking versus controls who walked normally. A second objective was to look at quality of life and ankle brachial pressure indices (ABPIs) after a 12 week augmented home exercise programme...
March 30, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28361573/effects-of-time-of-day-on-oxidative-stress-cardiovascular-parameters-biochemical-markers-and-hormonal-response-following-level-1-yo-yo-intermittent-recovery-test
#18
K Aloui, S Abedelmalek, H Chtourou, D P Wong, N Boussetta, N Souissi
The aim of this study was to investigate the effect of time-of-day on oxidative stress, cardiovascular parameters, muscle damage parameters, and hormonal responses following the level-1 Yo-Yo intermittent recovery test (YYIRT). A total of 11 healthy subjects performed an intermittent test (YYIRT) at two times-of-day (i.e., 07:00 h and 17:00 h), with a recovery period of ≥36 h in-between, in a randomized order. Blood samples were taken at the rest (baseline) and immediately (post-YYIRT) after the YYIRT for measuring oxidative stress, biochemical markers, and hormonal response...
March 1, 2017: Physiology International
https://www.readbyqxmd.com/read/28344454/the-effect-of-intermittent-head-cooling-on-aerobic-performance-in-the-heat
#19
Peter Walters, Nathaniel Thom, Kai Libby, Shelby Edgren, Amanda Azadian, Daniel Tannous, Elisabeth Sorenson, Brian Hunt
Thermoregulation is critical for athletes, particularly those for those who must perform in the heat. Most strategies aimed at reducing heat stress have cooled participants before or during activity. The objective of this study is to investigate whether seven minutes of head cooling applied between bouts of aerobic exercise in hot (35 ± 1.0 °C) and dry (14.68 ±4.29% rh) environmental conditions could positively effect participants peak power output (PP) on a maximal effort graded exercise test (GXT). Twenty-two recreational active men ages 18 to 23 (19...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28343570/supplemental-intermittent-day-heat-training-and-the-lactate-threshold
#20
Stuart Gollan, Samuel Chalmers, Stephen Alderton, Kevin Norton
Heat acclimation over consecutive days has been shown to improve aerobic-based performance. Recently, it has been suggested that heat training can improve performance in a temperate environment. However, due to the multifactorial training demands of athletes, consecutive-day heat training may not be suitable. The current study aimed to investigate the effect of brief (8×30min) intermittent (every 3-4 days) supplemental heat training on the second lactate threshold point (LT2) in temperate and hot conditions...
April 2017: Journal of Thermal Biology
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