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https://www.readbyqxmd.com/read/29345161/caffeine-improves-triathlon-performance-a-field-study-in-males-and-females
#1
Sunita Potgieter, Hattie H Wright, Carine Smith
The ergogenic effect of caffeine on endurance exercise is commonly accepted. We aimed to elucidate realistically the effect of caffeine on triathlon event performance using a field study design, while allowing investigation into potential mechanisms at play. A double-blind, randomized, crossover, field trial was conducted. Twenty-six triathletes (14 males, 12 females) participated (age: 37.8±10.6 years, habitual caffeine intake: 413±505 mg/day, percentage body fat: 14.5±7.2%, training/week: 12.8±4.5 hours)...
January 18, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29338584/effect-of-acute-ingestion-of-%C3%AE-hydroxybutyrate-salts-on-the-response-to-graded-exercise-in-trained-cyclists
#2
Mark Evans, Ella Patchett, Rickard Nally, Rachel Kearns, Matthew Larney, Brendan Egan
Acute ingestion of ketone salts induces nutritional ketosis by elevating β-hydroxybutyrate (βHB), but few studies have examined the metabolic effects of ingestion prior to exercise. Nineteen trained cyclists (12 male, 7 female) undertook graded exercise (8 min each at ∼30%, 40%, 50%, 60%, 70%, and 80% VO2peak) on a cycle ergometer on two occasions separated by either 7 or 14 days. Trials included ingestion of boluses of either (i) plain water (3.8 mL kg body mass-1) (CON) or (ii) βHB salts (0.38 g kg body mass-1) in plain water (3...
January 16, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29337829/estimation-of-repetitions-to-failure-for-monitoring-resistance-exercise-intensity-building-a-case-for-application
#3
Daniel A Hackett, Stephen P Cobley, Mark Halaki
The purpose of this study was to 1) examine the accuracy of Estimated Repetitions to Failure (ERF) during resistance exercise between two sessions, and 2) compare ERF to RPE (Rating of Perceived Exertion) for determining proximity to momentary failure. Forty-eight adults with recreational resistance training experience performed 3 sets of 10 repetitions at 70% 1RM and 80% 1RM for the chest press and leg press respectively. At the completion of each set, participants reported their ERF and then continued repetitions to failure to determine actual repetitions to failure (ARF)...
January 15, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29334638/the-effectiveness-of-physical-exercise-on-cognitive-and-psychological-outcomes-in-individuals-with-mild-cognitive-impairment-a-systematic-review-and-meta-analysis
#4
REVIEW
Dan Song, Doris S F Yu, Polly W C Li, Yang Lei
OBJECTIVE: Individuals with mild cognitive impairment (MCI) are at high risk for developing dementia. Physical exercise is a promising intervention for cognitive decline. Systematic reviews regarding the effects of physical exercise on cognitive and psychological outcomes among MCI patients are limited, and a systematic review exploring the effects of exercise modalities on the results has not been conducted. This study evaluated the effects of physical exercise on cognitive and psychological outcomes for MCI patients and attempted to identify which specific modality of exercise is more effective...
January 4, 2018: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/29332765/aquatic-myofascial-release-applied-after-high-intensity-exercise-increases-flexibility-and-decreases-pain
#5
Viviane Ramos Costa Lêdo, Ana Paula Xavier, Cesar Augustus Zocoler de Souza, Susi Mary de Souza Fernandes, Étria Rodrigues, Érico Chagas Caperuto
OBJECTIVES: To investigate aquatic myofascial release (AMR) effects on flexibility and delayed onset muscle soreness, after high intensity exercises. STUDY DESIGN: 15 participants, control (CON) and intervention (INT), 3 moments, pre (Pre), after (Post) and 50 min after (Post 50/Post AMR). 6 exercises, 5 sets, 15 reps at 85% of 1 maximum repetition, followed, or not, by 50 min of AMR. VARIABLES: Heart rate, lactate, rate of perceived exertion, pain and flexibility...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29331594/effects-of-physical-activity-on-the-symptoms-of-tourette-syndrome-a-systematic-review
#6
David D Kim, Darren E R Warburton, Nana Wu, Alasdair M Barr, William G Honer, Ric M Procyshyn
There is irrefutable evidence that routine physical activity or exercise can offer considerable health benefits to individuals living with various mental disorders. However, it is not clear what effect physical activity has on the symptoms of Tourette syndrome. Despite a paucity of evidence, physical activity or exercise has already been recommended by various health organizations for the management of tics. We provide a systematic review of the effects of physical activity or exercise on tic symptomology in individuals with Tourette syndrome...
December 8, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/29329555/exercise-during-and-after-neoadjuvant-rectal-cancer-treatment-the-exert-trial-study-protocol-for-a-randomized-controlled-trial
#7
Andria R Morielli, Nawaid Usmani, Normand G Boulé, Diane Severin, Keith Tankel, Tirath Nijjar, Kurian Joseph, Alysa Fairchild, Kerry S Courneya
BACKGROUND: Standard treatment for locally advanced rectal cancer includes 5-6 weeks of neoadjuvant chemoradiotherapy (NACRT) followed by total mesorectal excision 6-8 weeks later. NACRT improves local disease control and surgical outcomes but also causes side effects including fatigue, diarrhea, hand-foot syndrome, and physical deconditioning that may impede quality of life (QoL), treatment completion, treatment response, and long-term prognosis. Interventions to improve treatment outcomes and manage side effects that are safe, tolerable and low-cost are highly desirable...
January 12, 2018: Trials
https://www.readbyqxmd.com/read/29329154/effects-on-volume-load-and-ratings-of-perceived-exertion-in-individuals-advanced-weight-training-after-transcranial-direct-current-stimulation
#8
Eduardo Lattari, Blair José Rosa Filho, Sidnei Jorge Fonseca Junior, Eric Murillo-Rodriguez, Nuno Rocha, Sérgio Machado, Geraldo Albuquerque Maranhão Neto
The aim of this study was investigate the effects of transcranial direct current stimulation (tDCS) on volume-load and ratings of perceived exertion. Fifteen young healthy individuals, aged between 20 and 30 years in advanced strength training were recruited. Test and retest of the 10 maximum repetitions (10RM) were performed to determine the reliability of load utilized. Subjects performed three experimental conditions in a randomized, double-blinded crossover design: anodic stimulation (a-tDCS), cathodic stimulation (c-tDCS) and sham (2 mA for 20 minutes targeting the dorsolateral prefrontal cortex cortex left)...
January 11, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29324983/pulsatile-hemodynamics-are-associated-with-exercise-capacity-in-patients-with-exertional-dyspnea-and-preserved-left-ventricular-ejection-fraction
#9
M Broufa, S Wassertheurer, B Hametner, R Zweiker, R K Binder, T Weber
Background: Pulsatile hemodynamics are associated with left ventricular filling pressures and diastolic dysfunction. We investigated their relationship with maximum workload and peak oxygen uptake (peak VO2) in patients with exertional dyspnea and preserved left ventricular ejection fraction (LVEF). Methods: Radial waveforms from tonometry were processed with a transfer function, pulse wave analysis and wave separation analysis, yielding central aortic pressures and measures of forward (amplitude of forward wave-Pf) and reflected waves (Augmentation Index-AIx, Augmentation Pressure-AP, amplitude of backward wave-Pb) and their ratio (Reflection Magnitude-RM)...
January 9, 2018: American Journal of Hypertension
https://www.readbyqxmd.com/read/29324186/impact-of-sodium-citrate-ingestion-during-recovery-after-dehydrating-exercise-on-rehydration-and-subsequent-40-km-cycling-time-trial-performance-in-the-heat
#10
Silva Suvi, Martin Mooses, Saima Timpmann, Luule Medijainen, Daria Narõškina, Eve Unt, Vahur Ööpik
The purpose of this study was to assess the impact of sodium citrate (CIT) ingestion (600 mg·kg<sup>‒1</sup>) during recovery from dehydrating cycling exercise (DE) on subsequent 40-km cycling performance in a warm environment (32 °C). Twenty male non-heat-acclimated endurance athletes exercised in the heat until 4% body mass (BM) loss occurred. After 16 h recovery with consumption of water ad libitum and prescribed diet (evening meal 20 kcal·kg<sup>‒1</sup>, breakfast 12 kcal·kg<sup>‒1</sup>) supplemented in a double-blind, randomized, crossover manner with CIT or placebo (PLC), they performed 40-km time-trial (TT) on a cycle ergometer in a warm environment...
January 11, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29321341/exercise-tolerance-and-balance-of-inspiratory-to-expiratory-muscle-strength-in-relation-to-breathing-timing-in-patients-with-chronic-obstructive-pulmonary-disease
#11
Keisuke Miki, Kazuyuki Tsujino, Tatsuya Edahiro, Seigo Kitada, Mari Miki, Kenji Yoshimura, Hiroyuki Kagawa, Yohei Oshitani, Yuko Ohara, Yuki Hosono, Hiroyuki Kurebe, Ryoji Maekura
Little is known about the applicability of respiratory muscle training based on exertional pathophysiological conditions in patients with chronic obstructive pulmonary disease (COPD). The aim of this study was to investigate the relationship between breathing timing and exertional responses, as well as whether exertional changes in the inspiratory duty cycle (inspiratory time [Ti]/total time [Ttot]) affect pathophysiological conditions, including respiratory muscles. Methods: Forty-five stable COPD patients (mean age: 71...
January 11, 2018: Journal of Breath Research
https://www.readbyqxmd.com/read/29320704/extracellular-vesicles-provide-a-means-for-tissue-crosstalk-during-exercise
#12
Martin Whitham, Benjamin L Parker, Martin Friedrichsen, Janne R Hingst, Marit Hjorth, William E Hughes, Casey L Egan, Lena Cron, Kevin I Watt, Rhiannon P Kuchel, Navind Jayasooriah, Emma Estevez, Tim Petzold, Catherine M Suter, Paul Gregorevic, Bente Kiens, Erik A Richter, David E James, Jørgen F P Wojtaszewski, Mark A Febbraio
Exercise stimulates the release of molecules into the circulation, supporting the concept that inter-tissue signaling proteins are important mediators of adaptations to exercise. Recognizing that many circulating proteins are packaged in extracellular vesicles (EVs), we employed quantitative proteomic techniques to characterize the exercise-induced secretion of EV-contained proteins. Following a 1-hr bout of cycling exercise in healthy humans, we observed an increase in the circulation of over 300 proteins, with a notable enrichment of several classes of proteins that compose exosomes and small vesicles...
January 9, 2018: Cell Metabolism
https://www.readbyqxmd.com/read/29320305/social-physique-anxiety-and-physical-activity-behaviour-of-male-and-female-exercisers
#13
Robert M Portman, Jane Bradbury, Kiara Lewis
Despite females consistently reporting greater social physique anxiety (SPA), previous literature has yet to demonstrate whether SPA gender differences are linked to the way males and females perform physical activity. This study investigated an association between SPA and physical activity frequency, history of exercise, and physical activity intensity. Participants were represented by currently active users (N = 33 males; N = 31 females) of an on-campus university-run gym and completed a background physical activity questionnaire and the nine-item Social Physique Anxiety Scale...
January 10, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29319542/supplemental-oxygen-in-patients-with-stable-chronic-obstructive-pulmonary-disease-evidence-from-nocturnal-oxygen-treatment-trial-to-long-term-oxygen-treatment-trial
#14
Umur Hatipoğlu, James K Stoller
PURPOSE OF REVIEW: Oxygen therapy was the first treatment shown to prolong life in patients with chronic obstructive pulmonary disease (COPD) and has been joined by lung volume reduction surgery in selected patients with emphysema, smoking cessation, and potentially noninvasive ventilation in chronic hypercapneic respiratory failure. Although there is consensus around the survival-enhancing effect of supplemental oxygen (SupplO2) for patients with chronic severe hypoxemia at rest, the impact of SupplO2 for COPD patients with moderate hypoxemia and exertional desaturation had been less clear...
January 9, 2018: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/29318030/environmental-temperature-and-exercise-modality-independently-impact-central-and-muscle-fatigue-among-people-with-multiple-sclerosis
#15
Geetika Grover, Michelle Ploughman, Devin T Philpott, Liam P Kelly, Augustine J Devasahayam, Katie Wadden, Kevin E Power, Duane C Button
Background: Heat sensitivity and fatigue limit the ability of multiple sclerosis patients to participate in exercise. Objective: The purpose of this study was to determine the optimal aerobic exercise parameters (environmental temperature and exercise modality) to limit exercise-induced central and muscle fatigue among people with multiple sclerosis. Methods: Fourteen people with multiple sclerosis with varying levels of disability completed four randomized exercise sessions at 65% of the maximal volume of oxygen: body-weight supported treadmill cool (16°C), body-weight supported treadmill room (21°C), total-body recumbent stepper cool and total-body recumbent stepper room...
October 2017: Multiple Sclerosis Journal—Experimental, Translational and Clinical
https://www.readbyqxmd.com/read/29315169/health-benefits-of-an-innovative-exercise-program-for-mitochondrial-disorders
#16
Carmen Fiuza-Luces, Jorge Díez-Bermejo, Miguel Fernández-de la Torre, Gabriel Rodríguez-Romo, Paz Sanz-Ayán, Aitor Delmiro, Diego Munguía-Izquierdo, Irene Rodríguez-Gómez, Ignacio Ara, Cristina Domínguez-González, Joaquín Arenas, Miguel A Martín, Alejandro Lucia, María Morán
PURPOSE: We determined the effects of an innovative 8-week exercise intervention (aerobic, resistance and inspiratory muscle training) for patients with mitochondrial disease (MD). METHODS: Several endpoints were assessed in 12 patients (19-59 years, 4 female) at pre-training, post-training and after 4-week detraining: aerobic power, muscle strength/power and maximal inspiratory pressure (main endpoints), ability to perform activities of daily living (ADL), body composition, quality of life and blood myokines (secondary endpoints)...
January 8, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29306678/exercise-transcutaneous-oximetry-significantly-modifies-the-diagnostic-hypotheses-and-impacts-scheduled-investigations-or-treatments-of-patients-with-exertional-limb-pain
#17
Samir Henni, Guillaume Mahe, Christophe Lamotte, Remi Laurent, Alessandra Bura Riviere, Marion Aubourg, Gabrielle Sarlon, Damien Laneelle, Anne Long, Isabelle Signolet, Jean Picquet, Mathieu Feuilloy, Pierre Abraham
INTRODUCTION: In lower extremity peripheral artery disease (PAD), transcutaneous oximetry at exercise (Ex-TcpO2) has been largely validated in research practice, but evidence of routine practice in various vascular laboratories is missing. We hypothesized that Ex-TcPO2 would change the diagnosis hypotheses, investigations and treatments for patients referred for exertional limb pain. MATERIAL & METHODS: A multicenter prospective trial was conducted in nine different referral centers...
January 3, 2018: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/29305016/-design-and-validation-of-the-scale-for-the-detection-of-violence-in-courtship-in-young-people-in-the-sevilla-university-spain
#18
María Ángeles García-Carpintero, Javier Rodríguez-Santero, Ana María Porcel-Gálvez
OBJECTIVE: To design and validate a specific instrument to detect exercised and suffered in the relations of young couples in violence. METHOD: Descriptive study of validation clinimetric. Stratified by sex and area of knowledge, which was adopted as inclusion criteria have or have had any relationship. The sample consisted of 447 subjects. RESULTS: We obtained the Multidimensional Scale Dating Violence (EMVN), 32 items with three dimensions: physical and sexual assault, behavior control (cyberbullying, surveillance and harassment) and abuse psicoemocional (disparagement and domination), as a victim or as aggressor...
January 2, 2018: Gaceta Sanitaria
https://www.readbyqxmd.com/read/29303362/the-demands-of-amputee-soccer-impair-muscular-endurance-and-power-indices-but-not-match-physical-performance
#19
Mário A M Simim, Gustavo R da Mota, Moacir Marocolo, Bruno V C da Silva, Marco Túlio de Mello, Paul S Bradley
We investigated the match demands (distances covered and acute physiological responses) of amputee soccer and its impact on muscular endurance and power. Measures such as heart rate, blood lactate concentration, subjective rating of perceived exertion, and time-motion characteristics were recorded in 16 Brazilian amputee soccer players during matches. Before and after matches, players completed a battery of tests: push-ups, countermovement vertical jump performance, and medicine ball throwing. Small differences were found between the first and second half for the distance covered in total and across various speed categories...
January 5, 2018: Adapted Physical Activity Quarterly: APAQ
https://www.readbyqxmd.com/read/29300141/exercise-induced-physiological-arousal-biases-attention-toward-threatening-scene-details
#20
Tad T Brunyé, Caroline R Mahoney
The present experiment examined whether physiological arousal induced by acute bouts of aerobic exercise would influence attention and memory for scenes depicting or not depicting weapons. In a repeated-measures design, participants exercised at either low or high exertion levels. During exercise, they were presented with images, some of which depicted weapons; immediately following exercise, they completed a recognition test for portions of central and peripheral scene regions. Two primary results emerged...
January 1, 2018: Psychological Reports
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