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https://www.readbyqxmd.com/read/29332237/acute-acetaminophen-ingestion-improves-performance-and-muscle-activation-during-maximal-intermittent-knee-extensor-exercise
#1
Paul T Morgan, Joanna L Bowtell, Anni Vanhatalo, Andrew M Jones, Stephen J Bailey
AIM: Acetaminophen is a commonly used medicine for pain relief and emerging evidence suggests that it may improve endurance exercise performance. This study investigated some of the physiological mechanisms by which acute acetaminophen ingestion might blunt muscle fatigue development. METHODS: Thirteen active males completed 60 × 3 s maximum voluntary contractions (MVC) of the knee extensors with each contraction separated by a 2 s passive recovery period...
January 13, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29311764/effects-of-beetroot-juice-supplementation-on-intermittent-high-intensity-exercise-efforts
#2
REVIEW
Raúl Domínguez, José Luis Maté-Muñoz, Eduardo Cuenca, Pablo García-Fernández, Fernando Mata-Ordoñez, María Carmen Lozano-Estevan, Pablo Veiga-Herreros, Sandro Fernandes da Silva, Manuel Vicente Garnacho-Castaño
Beetroot juice contains high levels of inorganic nitrate (NO3-) and its intake has proved effective at increasing blood nitric oxide (NO) concentrations. Given the effects of NO in promoting vasodilation and blood flow with beneficial impacts on muscle contraction, several studies have detected an ergogenic effect of beetroot juice supplementation on exercise efforts with high oxidative energy metabolism demands. However, only a scarce yet growing number of investigations have sought to assess the effects of this supplement on performance at high-intensity exercise...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29300979/high-intensity-exercise-decreases-ip6k1-muscle-content-improves-insulin-sensitivity-si2-in-glucose-intolerant-individuals
#3
Jane Naufahu, Bradley Elliott, Anatoliy Markiv, Petra Dunning-Foreman, Maggie McGrady, David Howard, Peter Watt, Richard W A Mackenzie
Context: Insulin resistance in skeletal muscle contributes to whole body hyperglycaemia and the secondary complications associated with type 2 diabetes. Inositol hexakisphosphate kinase-1 (IP6K1) may inhibit insulin-stimulated glucose transport in this tissue type. Objective: Muscle and plasma IP6K1 were correlated with two-compartment models of glucose control in insulin-resistant hyperinsulimic individuals. Muscle IP6K1 was also compared following two different exercise trials...
December 29, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29287061/the-effects-of-interrupting-prolonged-sitting-with-intermittent-activity-on-appetite-sensations-and-subsequent-food-intake-in-preadolescent-children
#4
Tiwaloluwa A Ajibewa, Molly P O'Sullivan, Matthew R Nagy, Shannon S Block, Leah E Robinson, Natalie Colabianchi, Rebecca E Hasson
BACKGROUND: Short-term and long-term exposure to prolonged sitting is associated with excess food intake and weight gain in children. Interrupting prolonged sitting with low-intensity activity has been shown to not alter hunger, satiety, or food consumption in children, however it is unclear whether interrupting sitting with high-intensity activity will alter appetite regulation in children. PURPOSE: The purpose of this study was to examine the acute effects of interrupting prolonged sitting with intermittent activity performed at varying intensities on hunger, satiety, prospective food consumption (PFC), and food intake in preadolescent children...
2017: PloS One
https://www.readbyqxmd.com/read/29278423/exercise-for-intermittent-claudication
#5
REVIEW
Risha Lane, Amy Harwood, Lorna Watson, Gillian C Leng
BACKGROUND: Exercise programmes are a relatively inexpensive, low-risk option compared with other, more invasive therapies for treatment of leg pain on walking (intermittent claudication (IC)). This is the fourth update of a review first published in 1998. OBJECTIVES: Our goal was to determine whether an exercise programme was effective in alleviating symptoms and increasing walking treadmill distances and walking times in people with intermittent claudication. Secondary objectives were to determine whether exercise was effective in preventing deterioration of underlying disease, reducing cardiovascular events, and improving quality of life...
December 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29210958/the-reliability-and-validity-of-a-submaximal-warm-up-test-for-monitoring-training-status-in-professional-soccer-players
#6
Alireza Rabbani, Mehdi Kargarfard, Craig Twist
Two studies were conducted to assess the reliability and validity of a submaximal warm-up test (SWT) in professional soccer players. For the reliability study, 12 male players performed SWT over three trials, with one week between trials. For the validity study, 14 players of the same team performed SWT and 30-15 Intermittent Fitness Test (30-15IFT) 7 days apart. Week-to-week reliability in selected heart rate (HR) responses [exercise HR (HRex), HR recovery (HRR) expressed as the number of beats recovered within 1 min (HRR60s) and expressed as the mean HR during 1 min (HRpost1)], were determined using intraclass correlation coefficient (ICC) and typical error of measurement expressed as coefficient of variation (CV)...
November 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29204325/acute-ischemic-preconditioning-does-not-influence-high-intensity-intermittent-exercise-performance
#7
Isabela Coelho Marocolo, Gustavo Ribeiro da Mota, André Monteiro Londe, Stephen D Patterson, Octávio Barbosa Neto, Moacir Marocolo
This study evaluated the acute effect of ischemic preconditioning (IPC) on a high-intensity intermittent exercise performance and physiological indicators in amateur soccer players. Thirteen players (21.5 ± 2 yrs) attended three trials separated by 3-5 days in a counterbalanced randomized cross-over design: IPC (4 × 5-min occlusion 220 mmHg/reperfusion 0 mmHg) in each thigh; SHAM (similar to the IPC protocol but "occlusion" at 20 mmHg) and control (seated during the same time of IPC). After 6-min of each trial (IPC, SHAM or control), the players performed the YoYo Intermittent Endurance Test level 2 (YoYoIE2)...
2017: PeerJ
https://www.readbyqxmd.com/read/29203453/a-transferable-high-intensity-intermittent-exercise-improves-executive-performance-in-association-with-dorsolateral-prefrontal-activation-in-young-adults
#8
Sylwester Kujach, Kyeongho Byun, Kazuki Hyodo, Kazuya Suwabe, Takemune Fukuie, Radoslaw Laskowski, Ippeita Dan, Hideaki Soya
Although growing attention has been drawn to attainable, high-intensity intermittent exercise (HIE)-based intervention, which can improve cardiovascular and metabolic health, for sedentary individuals, there is limited information on the impact and potential benefit of an easily attainable HIE intervention for cognitive health. We aimed to reveal how acute HIE affects executive function focusing on underlying neural substrates. To address this issue, we examined the effects of acute HIE on executive function using the color-word matching Stroop task (CWST), which produces a cognitive conflict in the decision-making process, and its neural substrate using functional near infrared spectroscopy (fNIRS)...
December 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/29200906/effects-of-intermittent-ladder-climbing-exercise-training-on-mitochondrial-biogenesis-and-endoplasmic-reticulum-stress-of-the-cardiac-muscle-in-obese-middle-aged-rats
#9
Kijin Kim, Nayoung Ahn, Suryun Jung, Solee Park
The aim of this study is to investigate the effects of intermittent ladder-climbing exercise training on mitochondrial biogenesis and ER stress of the cardiac muscle in high fat diet-induced obese middle-aged rats. We induced obesity over 6 weeks of period in 40 male Sprague-Dawley rats around 50 weeks old, and were randomly divided into four experimental groups: chow, HFD, exercise+HFD, and exercise+chow. The exercising groups underwent high-intensity intermittent training using a ladder-climbing and weight exercise 3 days/week for a total of 8 weeks...
November 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/29182413/energetic-profile-of-the-basketball-exercise-simulation-test-in-junior-elite-players
#10
Richard Latzel, Olaf Hoos, Sebastian Stier, Sebastian Kaufmann, Volker Fresz, Dominik Reim, Ralph Beneke
PURPOSE: To analyze the energetic profile of the basketball exercise simulation test (BEST). METHODS: 10 male elite junior basketball players (age: 15.5±0.6yrs, height: 180±9cm, body mass: 66.1±11.2kg) performed a modified BEST (20 circuits consisting of jumping, sprinting, jogging, shuffling, and short breaks) simulating professional basketball game play. Circuit time, sprint time, sprint decrement, oxygen uptake (VO2), heart rate (HR), and blood lactate concentration (BLC) were obtained...
November 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29163201/short-term-high-and-moderate-intensity-training-modifies-inflammatory-and-metabolic-factors-in-response-to-acute-exercise
#11
Fabio Santos Lira, Thaislaine Dos Santos, Renan Santos Caldeira, Daniela S Inoue, Valéria L G Panissa, Carolina Cabral-Santos, Eduardo Z Campos, Bruno Rodrigues, Paula A Monteiro
Purpose: To compare the acute and chronic effects of high intensity intermittent training (HIIT) and steady state training (SST) on the metabolic profile and inflammatory response in physically active men. Methods: Thirty recreationally active men were randomly allocated to a control group (n = 10), HIIT group (n = 10), or SST group (n = 10). For 5 weeks, three times per week, subjects performed HIIT (5 km 1-min at 100% of maximal aerobic speed interspersed by 1-min passive recovery) or SST (5 km at 70% of maximal aerobic speed) while the control group did not perform training...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29161767/effects-of-different-endurance-exercise-modalities-on-migraine-days-and-cerebrovascular-health-in-episodic-migraineurs-a-randomized-controlled-trial
#12
Henner Hanssen, Alice Minghetti, Stefano Magon, Anja Rossmeissl, Maria Rasenack, Athina Papadopoulou, Christopher Klenk, Oliver Faude, Lukas Zahner, Till Sprenger, Lars Donath
BACKGROUND: Aerobic exercise training is a promising complementary treatment option in migraine and can reduce migraine days and improve retinal microvascular function. Our aim was to elucidate whether different aerobic exercise programs at high vs. moderate intensities distinctly affect migraine days as primary outcome and retinal vessel parameters as a secondary. METHODS: In this randomized controlled trial, migraine days were recorded by a validated migraine diary in 45 migraineurs of which 36 (female: 28; age: 36 (SD:10)/ BMI: 23...
November 21, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29151442/effects-of-short-lasting-supramaximal-intensity-exercise-on-diet-induced-increase-in-oxygen-uptake
#13
Katsunori Tsuji, Yuzhong Xu, Xin Liu, Izumi Tabata
This study was undertaken to quantify the additional increase in diet-induced oxygen uptake after exhaustive high-intensity intermittent exercise (HIIE), consisting of 6-7 bouts of 20-sec bicycle exercise (intensity: 170% V˙O2max) with a 10-sec rest between bouts. Using a metabolic chamber, the oxygen uptake of ten men was measured from 10:30 am to 07:00 am the next day on two separate days with or without HIIE, with lunch (12:00) and supper (18:00) (Diet experiment). On two other days, the oxygen uptake of six different subjects was measured from 10:30 to 16:00 with or without HIIE, but without meals (Fasting experiment)...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29124370/popular-weight-loss-strategies-a-review-of-four-weight-loss-techniques
#14
REVIEW
Jonathan Obert, Michelle Pearlman, Lois Obert, Sarah Chapin
PURPOSE OF REVIEW: The purpose of this paper is to review the epidemiology of obesity and the most recent literature on popular fad diets and exercise regimens that are used for weight loss. The weight loss plans that will be discussed in this article include juicing or detoxification diets, intermittent fasting, the paleo diet, and high intensity training. RECENT FINDINGS: Despite the growing popularity of fad diets and exercise plans for weight loss, there are limited studies that actually suggest these particular regimens are beneficial and lead to long-term weight loss...
November 9, 2017: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/29123485/intensifying-functional-task-practice-to-meet-aerobic-training-guidelines-in-stroke-survivors
#15
Liam P Kelly, Augustine J Devasahayam, Arthur R Chaves, Elizabeth M Wallack, Jason McCarthy, Fabien A Basset, Michelle Ploughman
Objective: To determine whether stroke survivors could maintain workloads during functional task practice that can reach moderate levels of cardiometabolic stress (i.e., ≥40% oxygen uptake reserve ([Formula: see text]O2R) for ≥20 min) without the use of ergometer-based exercise. Design: Cross-sectional study using convenience sampling. Setting: Research laboratory in a tertiary rehabilitation hospital. Participants: Chronic hemiparetic stroke survivors (>6-months) who could provide consent and walk with or without assistance...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29119246/skeletal-muscle-and-performance-adaptations-to-high-intensity-training-in-elite-male-soccer-players-speed-endurance-runs-versus-small-sided-game-training
#16
Dan Fransson, Tobias Schmidt Nielsen, Karl Olsson, Tobias Christensson, Paul S Bradley, Ioannis G Fatouros, Peter Krustrup, Nikolai Baastrup Nordsborg, Magni Mohr
PURPOSE: To examine the skeletal muscle and performance responses across two different exercise training modalities which are highly applied in soccer training. METHODS: Using an RCT design, 39 well-trained male soccer players were randomized into either a speed endurance training (SET; n = 21) or a small-sided game group (SSG; n = 18). Over 4 weeks, thrice weekly, SET performed 6-10 × 30-s all-out runs with 3-min recovery, while SSG completed 2 × 7-9-min small-sided games with 2-min recovery...
November 8, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29099231/effects-of-high-intensity-intermittent-training-on-vascular-function-in-obese-preadolescent-boys
#17
Napasakorn Chuensiri, Daroonwan Suksom, Hirofumi Tanaka
BACKGROUND: High-intensity intermittent training (HIIT) may serve as an effective alternative to traditional endurance training, since HIIT has been shown to induce greater improvements in aerobic fitness and health-related markers in adult populations. Our objective was to determine whether HIIT and supramaximal high-intensity intermittent training (supra-HIIT) would improve vascular structure and function in obese preadolescent boys. METHODS: Before the baseline testing, 48 obese preadolescent boys, aged 8-12 years, were randomly assigned into control (CON; n = 16), HIIT (8 × 2 minutes at 90% peak power output, n = 16), and supra-HIIT (8 × 20 seconds at 170% peak power output, n = 16) groups...
November 3, 2017: Childhood Obesity
https://www.readbyqxmd.com/read/29038365/muscle-ion-transporters-and-antioxidative-proteins-have-different-adaptive-potential-in-arm-than-in-leg-skeletal-muscle-with-exercise-training
#18
Magni Mohr, Tobias Schmidt Nielsen, Pál Weihe, Jákup A Thomsen, Giovanna Aquino, Peter Krustrup, Nikolai B Nordsborg
It was evaluated whether upper-body compared to lower-body musculature exhibits a different phenotype in relation to capacity for handling reactive oxygen species (ROS), H(+), La(-), Na(+), K(+) and also whether it differs in adaptive potential to exercise training. Eighty-three sedentary premenopausal women aged 45 ± 6 years (mean ± SD) were randomized into a high-intensity intermittent swimming group (HIS, n = 21), a moderate-intensity swimming group (MOS, n = 21), a soccer group (SOC, n = 21), or a control group (CON, n = 20)...
October 2017: Physiological Reports
https://www.readbyqxmd.com/read/29035607/accuracy-of-w-recovery-kinetics-in-high-performance-cyclists-modelling-intermittent-work-capacity
#19
Jason C Bartram, Dominic Thewlis, David T Martin, Kevin I Norton
PURPOSE: With knowledge of an individual's critical power (CP) and W' the SKIBA 2 model provides a framework with which to track W' balance during intermittent high intensity work bouts. There are fears the time constant controlling the recovery rate of W' (τW') may require refinement to enable effective use in an elite population. METHODS: Four elite endurance cyclists completed an array of intermittent exercise protocols to volitional exhaustion. Each protocol lasted approximately 3...
October 16, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29021912/a-study-of-intensity-fatigue-and-precision-in-two-specific-interval-trainings-in-young-tennis-players-high-intensity-interval-training-versus-intermittent-interval-training
#20
David Suárez Rodríguez, Miguel Del Valle Soto
BACKGROUND: The aim of this study is to find the differences between two specific interval exercises. We begin with the hypothesis that the use of microintervals of work and rest allow for greater intensity of play and a reduction in fatigue. METHODS: Thirteen competition-level male tennis players took part in two interval training exercises comprising nine 2 min series, which consisted of hitting the ball with cross-court forehand and backhand shots, behind the service box...
2017: BMJ Open Sport & Exercise Medicine
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