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Endurance exercise

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https://www.readbyqxmd.com/read/28102437/a-comparison-of-the-effects-of-medical-qigong-and-standard-exercise-therapy-on-symptoms-and-quality-of-life-in-patients-with-advanced-cancer
#1
B L Vanderbyl, M J Mayer, C Nash, A T Tran, T Windholz, T Swanson, G Kasymjanova, R T Jagoe
PURPOSE: Patients with advanced cancer frequently experience anxiety, depression and poor quality of life (QOL), as well as physical symptoms such as fatigue and weakness. Physical exercise has potential to help control these symptoms but the optimal training prescription is still not clear. We performed a study comparing medical Qigong (QG) and standard endurance and strength training (SET) in patients with advanced stage non-small cell lung (NSCLC) and gastrointestinal (GI) cancers...
January 19, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28100512/postexercise-repletion-of-muscle-energy-stores-with-fructose-or-glucose-in-mixed-meals
#2
Robin Rosset, Virgile Lecoultre, Léonie Egli, Jérémy Cros, Ayse Sila Dokumaci, Karin Zwygart, Chris Boesch, Roland Kreis, Philippe Schneiter, Luc Tappy
BACKGROUND: Postexercise nutrition is paramount to the restoration of muscle energy stores by providing carbohydrate and fat as precursors of glycogen and intramyocellular lipid (IMCL) synthesis. Compared with glucose, fructose ingestion results in lower postprandial glucose and higher lactate and triglyceride concentrations. We hypothesized that these differences in substrate concentration would be associated with a different partition of energy stored as IMCLs or glycogen postexercise...
January 18, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28099172/decrease-of-muscle-fiber-conduction-velocity-correlates-with-strength-loss-after-an-endurance-run
#3
Gennaro Boccia, Davide Dardanello, Cantor Tarperi, Valeria Rosso, Luca Festa, Antonio La Torre, Barbara Pellegrini, Federico Schena, Alberto Rainoldi
Monitoring surface electromyographic (EMG) signals can provide useful insights for characterizing muscle fatigue, which is defined as an exercise-induced strength loss. This experiment investigated the muscle fiber conduction velocity (CV) changes induced by an endurance run. The day before and immediately after a half-marathon run (21.097 km) 11 amateur runners performed maximum voluntary contractions (MVCs) of knee extensor muscles. During the MVC, multichannel EMG was recorded from the vastus lateralis and EMG amplitude and CV were calculated...
January 18, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28098836/association-of-school-environment-and-after-school-physical-activity-with-health-related-physical-fitness-among-junior-high-school-students-in-taiwan
#4
Kai-Yang Lo, Min-Chen Wu, Shu-Chin Tung, City C Hsieh, Hsueh-Hua Yao, Chien-Chang Ho
The relationship between students' school environment and exercise habits is complex, and is affected by numerous factors. However, the few studies that have been conducted on this relationship have reported inconsistent results, especially regarding Taiwanese students. We conducted this cross-sectional study to investigate the association of school environment and after-school physical activity with health-related physical fitness in Taiwanese adolescents. Data were drawn from a national survey conducted by the Ministry of Education in Taiwan in 2008 of health-related physical fitness measurements among junior high school students (649,442 total) in grades seven to nine...
January 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28097467/strenuous-exercise-and-cardiovascular-disease-outcomes
#5
REVIEW
Jonathan H Kim, Aaron L Baggish
PURPOSE OF REVIEW: This review summarizes several issues at the forefront of recent controversies involving the appropriate exercise dose including epidemiologic data describing mortality trends in those who engage in high levels of physical activity and recent observational data suggesting adverse cardiovascular outcomes among long-term endurance athletes. RECENT FINDINGS: The benefits of habitual and moderate levels of exercise on cardiovascular disease outcomes in the general population have been well established...
January 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28096758/effects-of-acute-ingestion-of-a-pre-workout-dietary-supplement-with-and-without-p-synephrine-on-resting-energy-expenditure-cognitive-function-and-exercise-performance
#6
Y Peter Jung, Conrad P Earnest, Majid Koozehchian, Elfego Galvan, Ryan Dalton, Dillon Walker, Christopher Rasmussen, Peter S Murano, Mike Greenwood, Richard B Kreider
BACKGROUND: The purpose of this study was to examine the effects of acute ingestion of a pre-workout dietary supplement (PWS) with and without p-synephrine (S) on perceptions of readiness to perform, cognitive function, exercise performance, and markers of safety. METHODS: In a randomized, double-blind, and counterbalanced manner; 25 healthy and recreationally active male and female participants ingested a flavored maltodextrin placebo (PLA), a PWS containing beta-alanine (3 g), creatine nitrate as a salt (2 g), arginine alpha-ketoglutarate (2 g), N-Acetyl-L-Tyrosine (300 mg), caffeine (284 mg), Mucuna pruiriens extract standardized for 15% L-Dopa (15 mg), Vitamin C as Ascorbic Acid (500 mg), niacin (60 mg), folate as folic acid (50 mg), and Vitamin B12 as Methylcobalamin (70 mg) with 2 g of maltodextrin and flavoring; or, the PWS with Citrus aurantium (PWS + S) extract standardized for 30% p-synephrine (20 mg)...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28096255/sheppheartcabg-trial-comprehensive-early-rehabilitation-after-coronary-artery-bypass-grafting-a-protocol-for-a-randomised-clinical-trial
#7
Ida Elisabeth Højskov, Philip Moons, Niels Viggo Hansen, Søren La Cour, Peter Skov Olsen, Christian Gluud, Per Winkel, Jane Lindschou, Lau Caspar Thygesen, Ingrid Egerod, Selina Kikkenborg Berg
INTRODUCTION: Patients undergoing coronary artery bypass graft surgery often experience a range of symptoms. Studies indicate that non-pharmacological interventions such as exercise training and psychoeducation have a positive physiological and psychological effect in early outpatient rehabilitation. The SheppHeartCABG trial will investigate the effect of early comprehensive rehabilitation in early phase rehabilitation versus usual care. The aim of this paper is to present the protocol for the SheppHeartCABG trial...
January 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28095077/running-performance-with-nutritive-and-non-nutritive-sweetened-mouth-rinses
#8
Keely H Hawkins, Sridevi Krishnan, Lara Ringos, Vanessa Garcia, Jamie A Cooper
: Mouth rinsing (MR) with carbohydrate during exercise has been shown to act as an ergogenic aid. PURPOSE: To investigate if nutritive or nonnutritive sweetened MR affect exercise performance, and to assess the influence of sweetness intensity on endurance performance during a time-trial (TT). METHODS: This randomized, single blinded study had 4 treatment conditions. 16 subjects (9 men, 7 women) completed a 12.8km TT four different times. During each TT, subjects MR and expectorated a different solution at time 0 and every 12...
January 17, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28092297/vascular-adaptations-to-habitual-exercise-in-older-adults-time-for-the-sex-talk
#9
Kerrie L Moreau, Cemal Ozemek
Regular exercise is promoted as a therapeutic strategy for age-associated endothelial dysfunction. Improvements in endothelial function are observed with endurance exercise in older men, but are diminished or absent in older women. This review examines the hypothesis that sex hormones modulate vascular adaptations to exercise training by influencing antioxidant defense systems, mitochondrial function, oxidative stress, and intracellular signaling.
January 13, 2017: Exercise and Sport Sciences Reviews
https://www.readbyqxmd.com/read/28090137/echocardiographic-assessment-of-right-ventricle-adaptation-to-endurance-training-in-young-rowers-speckle-tracking-echocardiography
#10
M Konopka, W Krol, K Burkhard-Jagodzinska, A Jakubiak, A Klusiewicz, J Chwalbinska, A Pokrywka, D Sitkowski, M Dluzniewski, W Braksator
The aim of this study was to determine the relationship between the degree of cardiorespiratory fitness and the function of the right ventricle (RV). 117 rowers, age 17.5±1.5 years. All subjects underwent cardiopulmonary exercise. Standard echocardiography and 2D speckle tracking echocardiography with evaluation of longitudinal strain in each segment of the RV (basal - RVLS-B; mid - RVLS-M, apical - RVLS-A) and global RV free-wall strain (RVLS-G) were performed. RVLS-B values were lower compared to the RVLS-M (-25...
December 2016: Biology of Sport
https://www.readbyqxmd.com/read/28090136/the-impact-of-duration-on-effectiveness-of-exercise-the-implication-for-periodization-of-training-and-goal-setting-for-individuals-who-are-overfat-a-meta-analysis
#11
J E Clark
Given the assumption that all methods of exercise, e.g., endurance (ET), resistance (RT), or combination of both (E+R), can induce a beneficial effect size (ES) for changes in body composition and health status of individuals who are overfat. Thus the aim and purpose of this study is to evaluate the current body of knowledge to address the question as to the impact that the duration of exercise has on its relative effectiveness for inducing health and body compositional changes in individuals who are overfat to assist with developing periodized exercise protocols and establishing short and long term goals...
December 2016: Biology of Sport
https://www.readbyqxmd.com/read/28079705/prescribed-drinking-leads-to-better-cycling-performance-than-ad-libitum-drinking
#12
Costas N Bardis, Stavros A Kavouras, J D Adams, Nickos D Geladas, Demosthenis B Panagiotakos, Labros S Sidossis
: Drinking ad libitum during exercise often leads to dehydration ranging from -1 to -3% of body weight. PURPOSE: To study the effect of a prescribed hydration protocol matching fluid losses on a simulated 30-km criterium-like cycling performance in the heat (31.6±0.5 °C). METHOD: Ten elite, heat-acclimatized, male endurance cyclists (30±5 y, 76.5±7.2 kg, 1.81±0.07 m, VO2peak: 61.3±5.2 ml[BULLET OPERATOR]min[BULLET OPERATOR]kg, body fat: 10...
January 10, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28079616/evaluation-of-an-outpatient-rehabilitative-program-to-address-mobility-limitations-among-older-adults
#13
Lorna G Brown, Meng Ni, Catherine T Schmidt, Jonathan F Bean
Live Long Walk Strong is a clinical demonstration program for community-dwelling older patients. It was designed to be consistent with current fall prevention guidelines and reimbursed under the Medicare model. Patients were screened within primary care and referred to a physiatrist followed by systematic assessment and treatment within an outpatient rehabilitative care setting. The treatment included behavioral modification, fall prevention education, community/home exercise integration, and exercise targeting strength, power, flexibility, balance, and endurance...
January 11, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28078668/mitochondrial-adaptations-to-exercise-in-human-skeletal-muscle-a-possible-role-for-cristae-density-as-a-determinant-of-muscle-fitness
#14
Christopher G R Perry
Skeletal muscle possesses a remarkable plasticity in response to repeated exercise challenges (i.e. exercise 'training'). A hallmark phenotypic change is an increase in the ability to sustain contraction and resist fatigue. Such increased muscle endurance is linked, in part, to an improved ability to sustain ATP synthesis aerobically through coordinated enhancements in the delivery of oxygen (e.g. cardiorespiratory, vascular adaptations) and its utilization within skeletal muscle mitochondria for the oxidation of fat and carbohydrates...
January 11, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28074493/ampk-does-not-play-a-requisite-role-in-regulation-of-ppargc1a-gene-expression-via-the-alternative-promoter-in-endurance-trained-human-skeletal-muscle
#15
Daniil V Popov, Evgeny A Lysenko, Alexey D Butkov, Tatiana F Vepkhvadze, Dmitriy V Perfilov, Olga L Vinogradova
In human skeletal muscle, PGC-1α is constitutively expressed via the canonical promoter. By contrast, the expression of PGC-1α mRNA via the alternative promoter was found to be highly dependent on the intensity of exercise and to contribute largely to the post-exercise increase of total PGC-1α mRNA. This study investigated the role of AMPK in regulating PGC-1α gene expression via the alternative promoter through a cAMP responsive element-binding protein-1 (CREB1)-dependent mechanism in human skeletal muscle...
January 10, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28073325/the-moderating-role-of-insulin-like-growth-factor-1-in-the-relationship-between-cognitive-and-aerobic-endurance-change
#16
Jason R Anderson, Dayana Calvo, Ellen Glickman, John Gunstad, Mary Beth Spitznagel
BACKGROUND: Improvements in cognition often accompany fitness improvements in older adults, and research suggests insulin-like growth factor 1 (IGF-1) may influence this association. No prior work has examined this in mild cognitive impairment (MCI). We predicted that IGF-1 would moderate the relationship between cognition and aerobic endurance improvement, such that greater baseline IGF-1 would accompany a stronger relationship between cognition and aerobic endurance change. METHOD: Twenty-seven individuals with MCI completed assessments of aerobic endurance (2-minute step test [2MST]) and global cognition (Modified Mini-Mental State [3MS]) before and after a 6-month period of twice-weekly exercise...
January 1, 2017: Journal of Geriatric Psychiatry and Neurology
https://www.readbyqxmd.com/read/28072907/symptomatic-treatments-for-amyotrophic-lateral-sclerosis-motor-neuron-disease
#17
REVIEW
Louisa Ng, Fary Khan, Carolyn A Young, Mary Galea
BACKGROUND: Motor neuron disease (MND), which is also known as amyotrophic lateral sclerosis (ALS), causes a wide range of symptoms but the evidence base for the effectiveness of the symptomatic treatment therapies is limited. OBJECTIVES: To summarise the evidence from Cochrane Systematic Reviews of all symptomatic treatments for MND. METHODS: We searched the Cochrane Database of Systematic Reviews (CDSR) on 15 November 2016 for systematic reviews of symptomatic treatments for MND...
January 10, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28068656/mechanisms-of-improved-exercise-performance-under-hyperoxia
#18
Silvia Ulrich, Elisabeth D Hasler, Séverine Müller-Mottet, Stephan Keusch, Michael Furian, Tsogyal D Latshang, Simon Schneider, Stéphanie Saxer, Konrad E Bloch
BACKGROUND: The impact of hyperoxia on exercise limitation is still incompletely understood. OBJECTIVES: We investigated to which extent breathing hyperoxia enhances the exercise performance of healthy subjects and which physiologic mechanisms are involved. METHODS: A total of 32 healthy volunteers (43 ± 15 years, 12 women) performed 4 bicycle exercise tests to exhaustion with ramp and constant-load protocols (at 75% of the maximal workload [Wmax] on FiO2 0...
January 10, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28067532/mental-stress-induced-left-ventricular-dysfunction-and-adverse-outcome-in-ischemic-heart-disease-patients
#19
Julia L Sun, Stephen H Boyle, Zainab Samad, Michael A Babyak, Jennifer L Wilson, Cynthia Kuhn, Richard C Becker, Thomas L Ortel, Redford B Williams, Joseph G Rogers, Christopher M O'Connor, Eric J Velazquez, Wei Jiang
Aims Mental stress-induced myocardial ischemia (MSIMI) occurs in up to 70% of patients with clinically stable ischemic heart disease and is associated with increased risk of adverse prognosis. We aimed to examine the prognostic value of indices of MSIMI and exercise stress-induced myocardial ischemia (ESIMI) in a population of ischemic heart disease patients that was not confined by having a recent positive physical stress test. Methods and results The Responses of Mental Stress Induced Myocardial Ischemia to Escitalopram Treatment (REMIT) study enrolled 310 subjects who underwent mental and exercise stress testing and were followed annually for a median of four years...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28066619/clinical-management-of-chronic-obstructive-pulmonary-disease-patients-with-muscle-dysfunction
#20
REVIEW
Joaquim Gea, Carme Casadevall, Sergi Pascual, Mauricio Orozco-Levi, Esther Barreiro
Muscle dysfunction is frequently observed in chronic obstructive pulmonary disease (COPD) patients, contributing to their exercise limitation and a worsening prognosis. The main factor leading to limb muscle dysfunction is deconditioning, whereas respiratory muscle dysfunction is mostly the result of pulmonary hyperinflation. However, both limb and respiratory muscles are also influenced by other negative factors, including smoking, systemic inflammation, nutritional abnormalities, exacerbations and some drugs...
November 2016: Journal of Thoracic Disease
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