keyword
MENU ▼
Read by QxMD icon Read
search

exercise exertion

keyword
https://www.readbyqxmd.com/read/28535093/the-effects-of-crushed-ice-ingestion-prior-to-steady-state-exercise-in-the-heat
#1
Matthew Zimmermann, Grant Landers, Karen E Wallman, Jacinta Saldaris
This study examined the physiological effects of crushed ice ingestion before steady state exercise in the heat. Ten healthy males with age (23 ± 3 y), height (176.9 ± 8.7 cm), body-mass (73.5 ± 8.0 kg), VO2peak (48.5 ± 3.6 mL∙kg∙min(-1)) participated in the study. Participants completed 60 min of cycling at 55% of their VO2peak preceded by 30 min of precooling whereby 7 g∙kg(-1) of thermoneutral water (CON) or crushed ice (ICE) was ingested. The reduction in Tc at the conclusion of precooling was greater in ICE (-0...
June 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28527958/treadmill-exercise-produces-neuroprotective-effects-in-a-murine-model-of-parkinson-s-disease-by-regulating-the-tlr2-myd88-nf-%C3%AE%C2%BAb-signaling-pathway
#2
Jung-Hoon Koo, Yong-Chul Jang, Dong-Ju Hwang, Hyun-Seob Um, Nam-Hee Lee, Jae-Hoon Jung, Joon-Yong Cho
Parkinson's disease (PD) is characterized by progressive dopamine depletion and a loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc). Treadmill exercise is a promising non-pharmacological approach for reducing the risk of PD and other neuroinflammatory disorders, such as Alzheimer's disease. The goal of this study was to investigate the effects of treadmill exercise on α-synuclein-induced neuroinflammation and neuronal cell death in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse model of PD...
May 17, 2017: Neuroscience
https://www.readbyqxmd.com/read/28524103/potential-impact-of-nutrition-on-immune-system-recovery-from-heavy-exertion-a-metabolomics-perspective
#3
REVIEW
David C Nieman, Susan Hazels Mitmesser
This review describes effective and ineffective immunonutrition support strategies for the athlete, with a focus on the benefits of carbohydrates and polyphenols as determined from metabolomics-based procedures. Athletes experience regular cycles of physiological stress accompanied by transient inflammation, oxidative stress, and immune perturbations, and there are increasing data indicating that these are sensitive to nutritional influences. The most effective nutritional countermeasures, especially when considered from a metabolomics perspective, include acute and chronic increases in dietary carbohydrate and polyphenols...
May 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28516252/chronic-eccentric-arm-cycling-improves-maximum-upper-body-strength-and-power
#4
Steven J Elmer, Dakota J Anderson, Travis R Wakeham, Matthew A Kilgas, John J Durocher, Stan L Lindstedt, Paul C LaStayo
INTRODUCTION: Eccentric leg cycling (cycle ergometry adapted to impose muscle lengthening contractions) offers an effective exercise for restoring lower-body muscular function, maintaining health, and improving performance in clinical and athletic populations. PURPOSE: We extended this model to the upper body and evaluated the effectiveness of a 7-week eccentric arm cycling (ECCarm) intervention to improve upper-body muscular function. We also explored whether ECCarm would alter arterial function...
May 17, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28515841/demands-of-simulated-commuting-using-an-electrically-assisted-bicycle
#5
D Taylor LA Salle, Robert Shute, Matthew Heesch, Dustin Slivka
The American College of Sports Medicine (ACSM) recommends adults participate in weekly aerobic activity for a minimum of 30 minutes moderate intensity exercise 5 days per week or 20 minutes of vigorous activity 3 days per week. The electrically assisted bicycle may help individuals achieve the ACSM's aerobic recommendations and introduce inactive individuals to physical activity. To compare the physiological requirements of riding a bicycle with electric pedal assist versus non-assist among healthy active young adults...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28514808/physiological-dynamic-apnea-responses-in-relation-to-apnea-capacity-in-triathletes
#6
Alexandre Guimard, Houssem Zorgati, Sylvain Brulaire, Virgile Amiot, Fabrice Prieur, Katia Collomp
The aim was to assess the cardiac, arterial oxygen saturation, lactate, hormonal and Borg rating of perceived exertion (RPE) responses to acute apnea in relation to apnea capacity in 18 middle-aged triathletes. Subjects were monitored while swimming two 50-m freestyle exercise trials with fins at maximal speed: with normal frequency breathing (NB) and with complete apnea (Ap); the latter was used to assess apnea capacity. The subjects with significant alteration in swimming performance inducing a time increase greater than 2...
May 17, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28514807/can-transcranial-direct-current-stimulation-modulate-psychophysiological-response-in-sedentary-men-during-vigorous-aerobic-exercise
#7
Alexandre Hideki Okano, Daniel Gomes Silva Machado, Leônidas Oliveira Neto, Luiz Fernando Farias-Junior, Pedro Moraes Dutra Agrícola, Ademir Arruda, André Igor Fonteles, Li Min Li, Eduardo B Fontes, Hassan Mohamed Elsangedy, Alexandre Moreira
This study evaluated whether transcranial direct current stimulation (tDCS) could change physiological and psychological responses during vigorous exercise with a constant load. 13 sedentary males (23.0±4.2 years; 25.6±4.2 kg/m²) took part in this randomized, crossed-over, sham-controlled, and double-blinded study. Participants underwent 2 sessions with anodal or sham tDCS (2 mA, 20 min) applied before exercise over the left temporal cortex targeting the left insular cortex. The exercise was performed at vigorous intensity (%HRmax 81...
May 17, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28513179/consumption-of-watermelon-juice-enriched-in-l-citrulline-and-pomegranate-ellagitannins-enhanced-metabolism-during-physical-exercise
#8
Ascension Martinez-Sanchez, Fernando Alacid, Jacobo A Rubio-Arias, Bárbara Fernandez-Lobato, Domingo J Ramos-Campo, Encarna Aguayo
L-citrulline is a non-essential amino acid precursor of arginine and indirectly a precursor of nitric oxide (NO), which is a vasodilator and increases mitochondrial respiration. On the other hand, the antioxidant pomegranate ellagitannins are precursors of urolithin A, which has been associated with mitophagy and increased muscle function. To elucidate if a single dose of watermelon enrichment with these compounds have a positive effect after a high intensity exercise (8 sets of 8 repetitions of half squat exercise), a double-blind randomized crossover in vivo study was performed in healthy male subjects (n=19)...
May 17, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28510737/total-haemoglobin-mass-but-not-haemoglobin-concentration-is-associated-with-preoperative-cardiopulmonary-exercise-testing-derived-oxygen-consumption-variables
#9
J M Otto, J O M Plumb, D Wakeham, E Clissold, L Loughney, W Schmidt, H E Montgomery, M P W Grocott, T Richards
Background: Cardiopulmonary exercise testing (CPET) measures peak exertional oxygen consumption ( V˙O2peak ) and that at the anaerobic threshold ( V˙O2 at AT, i.e. the point at which anaerobic metabolism contributes substantially to overall metabolism). Lower values are associated with excess postoperative morbidity and mortality. A reduced haemoglobin concentration ([Hb]) results from a reduction in total haemoglobin mass (tHb-mass) or an increase in plasma volume. Thus, tHb-mass might be a more useful measure of oxygen-carrying capacity and might correlate better with CPET-derived fitness measures in preoperative patients than does circulating [Hb]...
May 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28508114/oral-l-menthol-reduces-thermal-sensation-increases-work-rate-and-extends-time-to-exhaustion-in-the-heat-at-a-fixed-rating-of-perceived-exertion
#10
T R Flood, M Waldron, O Jeffries
PURPOSE: The study investigated the effect of a non-thermal cooling agent, L-menthol, on exercise at a fixed subjective rating of perceived exertion (RPE) in a hot environment. METHOD: Eight male participants completed two trials at an exercise intensity between 'hard' and 'very hard', equating to 16 on the RPE scale at ~35 °C. Participants were instructed to continually adjust their power output to maintain an RPE of 16 throughout the exercise trial, stopping once power output had fallen by 30%...
May 15, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28505102/bone-protective-effects-of-dried-plum-in-postmenopausal-women-efficacy-and-possible-mechanisms
#11
REVIEW
Bahram H Arjmandi, Sarah A Johnson, Shirin Pourafshar, Negin Navaei, Kelli S George, Shirin Hooshmand, Sheau C Chai, Neda S Akhavan
Osteoporosis is an age-related chronic disease characterized by a loss of bone mass and quality, and is associated with an increased risk of fragility fractures. Postmenopausal women are at the greatest risk of developing osteoporosis due to the cessation in ovarian hormone production, which causes accelerated bone loss. As the demographic shifts to a more aged population, a growing number of postmenopausal women will be afflicted with osteoporosis. Certain lifestyle factors, including nutrition and exercise, are known to reduce the risk of developing osteoporosis and therefore play an important role in bone health...
May 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28504898/dissociable-contributions-of-imagination-and-willpower-to-the-malleability-of-human-patience
#12
Adrianna C Jenkins, Ming Hsu
The ability to exercise patience is important for human functioning. Although it is known that patience can be promoted by using top-down control, or willpower, to override impatient impulses, patience is also malleable-in particular, susceptible to framing effects-in ways that are difficult to explain using willpower alone. So far, the mechanisms underlying framing effects on patience have been elusive. We investigated the role of imagination in these effects. In a behavioral experiment (Experiment 1), a classic framing manipulation (sequence framing) increased self-reported and independently coded imagination during intertemporal choice...
May 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/28503523/treadmill-exercise-ameliorates-depressive-symptoms-through-increasing-serotonin-expression-in-postpartum-depression-rats
#13
Eun-Sang Ji, Jae-Min Lee, Tae-Woon Kim, You-Mi Kim, Yeon-Soo Kim, Kijeong Kim
Postpartum depression (PPD) is defined as the depressive symptoms that occur from the moment of delivery until 12 months after delivery. PPD symptoms are closely associated with reduced activity of the serotonergic system. Serotonin (5-hydroxytryptamine, 5-HT) plays an important role in the pathogenesis of depression. Tryptophan hydroxylase (TPH) catalyzes the rate-limiting step of 5-HT biosynthesis in the serotonergic neurons. Exercise exerts anti-depressive effect on depression patients as well as on animal models of depression...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28502493/the-effect-of-maximal-vs-submaximal-exertion-on-postprandial-lipid-levels-in-individuals-with-and-without-coronary-heart-disease
#14
David M Aronov, Marina G Bubnova, Natalia V Perova, Alexander N Orekhov, Yuri V Bobryshev
BACKGROUND: Decisions about fat consumption and levels of physical activity are among the everyday choices we make in life and risk of coronary heart disease (CHD) can be affected by those choices. OBJECTIVE: The purpose of this study was to investigate the influence of a standard fat load combined with physical exertion of different intensities on the plasma lipid profile of CHD patients and CHD-free individuals. METHODS: This study looked at the influence of different intensities of physical exercise on postprandial lipid metabolism in 20 healthy men and 36 men with diagnosis of CHD...
March 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28501918/exercise-stress-echocardiography-in-hypertrophic-cardiomyopathy
#15
Kengo Suzuki, Yoshihiro J Akashi
In this review, we make a comprehensive summary of exercise stress echocardiography in hypertrophic cardiomyopathy (HCM) and practical tips used in our hospital. The main objective of performing exercise stress echocardiography in patients with HCM is to evaluate left ventricular outflow tract obstruction, mitral regurgitation, left ventricular asynergy, and diastolic function during exercise. There are limitations to the explanations that can be provided for exertional symptoms when resting echocardiography is performed in patients with HCM...
May 13, 2017: Journal of Echocardiography
https://www.readbyqxmd.com/read/28497384/physiological-responses-to-incremental-interval-and-continuous-counterweighted-single-leg-and-double-leg-cycling-at-the-same-relative-intensities
#16
Martin J MacInnis, Nathaniel Morris, Michael W Sonne, Amanda Farias Zuniga, Peter J Keir, Jim R Potvin, Martin J Gibala
PURPOSE: We compared physiological responses to incremental, interval, and continuous counterweighted single-leg and double-leg cycling at the same relative intensities. The primary hypothesis was that the counterweight method would elicit greater normalized power (i.e., power/active leg), greater electromyography (EMG) responses, and lower cardiorespiratory demand. METHODS: Graded-exercise tests performed by 12 men (age: 21 ± 2 years; BMI: 24 ± 3 kg/m(2)) initially established that peak oxygen uptake ([Formula: see text]; 76 ± 8...
May 11, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28495846/dispelling-the-myth-that-habitual-caffeine-consumption-influences-the-performance-response-to-acute-caffeine-supplementation
#17
Lívia de Souza Gonçalves, Vitor de Salles Painelli, Guilherme Yamaguchi, Luana Farias de Oliveira, Bryan Saunders, Rafael Pires da Silva, Erika Maciel, Guilherme Giannini Artioli, Hamilton Roschel, Bruno Gualano
OBJECTIVE: To investigate the influence of habitual caffeine intake on exercise performance to acute caffeine supplementation. METHODS: A double-blind, crossover, counterbalanced study was performed. Forty endurance-trained cyclists were allocated into tertiles according to their daily caffeine intake: low (58 ± 29 mg(.)d(-1)), moderate (143 ± 25 mg(.)d(-1)), and high consumers (351 ± 139 mg(.)d(-1)). Participants completed three trials in which they performed simulated cycling time-trials in the fastest time possible following ingestion of: caffeine (CAF: 6 mg(...
May 11, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28494500/exercise-as-an-effective-transgenerational-strategy-to-overcome-metabolic-syndrome-in-the-future-generation-are-we-there
#18
Ramires Alsamir Tibana, Octávio Luiz Franco, Rinaldo Wellerson Pereira, James Navalta, Jonato Prestes
Metabolic syndrome (MetS) consist in a combination of cardiovascular risk factors including elevated blood pressure, dyslipidemia, insulin resistance, hyperglycemia and abdominal obesity. Exercise performed before, during and after pregnancy can exert positive effects to counteract MetS risk factors. Here this review aims to analyze the effects of exercise performed before (fathers and mothers) and after periconception (mothers) by using experimental models and its effects on MetS risk factors in offspring...
May 11, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28493406/beta-hydroxy-beta-methylbutyrate-supplementation-and-skeletal-muscle-in-healthy-and-muscle-wasting-conditions
#19
REVIEW
Milan Holeček
Beta-hydroxy-beta-methylbutyrate (HMB) is a metabolite of the essential amino acid leucine that has been reported to have anabolic effects on protein metabolism. The aims of this article were to summarize the results of studies of the effects of HMB on skeletal muscle and to examine the evidence for the rationale to use HMB as a nutritional supplement to exert beneficial effects on muscle mass and function in various conditions of health and disease. The data presented here indicate that the beneficial effects of HMB have been well characterized in strength-power and endurance exercise...
May 10, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28492794/exploring-vascular-function-biomarkers-implications-for-rehabilitation
#20
Shane A Phillips, Daniela Kuguimoto Andaku, Renata Gonçalves Mendes, Flávia Rossi Caruso, Ramona Cabiddu, Rodrigo Boemo Jaenisch, Ross Arena, Audrey Borghi-Silva
The endothelium plays an important role in maintaining vascular homeostasis and regulating blood vessel function. Endothelial function is considered an independent predictor for risk of future cardiovascular events in cardiovascular and non-cardiovascular patients, as well as a predictor for postoperative complications in cardiovascular surgery patients. Brachial artery flow-mediated dilation by high-resolution ultrasound is widely used to evaluate endothelium-dependent vasodilation, which is mainly mediated by nitric oxide release...
March 2017: Brazilian Journal of Cardiovascular Surgery
keyword
keyword
89226
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"