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https://www.readbyqxmd.com/read/28524229/exercise-induced-quadriceps-muscle-fatigue-in-men-and-women-effects-of-arterial-oxygen-content-and-respiratory-muscle-work
#1
Paolo B Dominelli, Yannick Molgat-Seon, Donald E G Griesdale, Carli M Peters, Jean-Sébastien Blouin, Mypinder Sekhon, Giulio S Dominelli, William R Henderson, Glen E Foster, Lee M Romer, Michael S Koehle, A William Sheel
Reducing the work of breathing or eliminating exercise-induced arterial hypoxemia (EIAH) during exercise decreases the severity of quadriceps fatigue in men. Women have a greater work of breathing during exercise, dedicate a greater fraction of whole-body V̇O2 towards their respiratory muscles, and demonstrate EIAH, suggesting women may be especially susceptible to quadriceps fatigue. Healthy subjects (8M, 8F) completed three constant load exercise tests over four days. During the first (control) test, subjects exercised at ∼85% of maximum while arterial blood gases and work of breathing were assessed...
May 19, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28515830/how-different-respiratory-rate-patterns-affect-cardiorespiratory-variables-and-performance
#2
Minas Nalbandian, Zsolt Radak, Jun Taniguchi, Takeda Masaki
This study aims to elucidate how respiratory rate (RR) patterns may affect respiratory gas exchange variables and performance during incremental intensity- exercise. 10 healthy young men (mean ± SD, age: 20.7 ± 0.5 years, height: 174.3 ± 5.7 cm, and body mass: 72.6 ± 10.4 kg) performed three incremental tests on a cycle ergometer at three different RR (60, 45 and 30 breaths per min) in each trial. During the tests, tidal volume (TV), minute ventilation (VE), fractional content of oxygen (FeO2), fractional content of carbon dioxide (FeCO2), oxygen uptake (VO2), expiratory carbon dioxide (VCO2), equivalent of oxygen (EqO2), VE/VCO2, and respiratory exchange ratio (RER) were determinate breath-by-breath...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28514808/physiological-dynamic-apnea-responses-in-relation-to-apnea-capacity-in-triathletes
#3
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/28509868/compact-eucapnic-voluntary-hyperpnoea-apparatus-for-exercise-induced-respiratory-disease-detection
#4
Lulu Wang, Ahmed Al-Jumaily
Eucapnic voluntary hyperpnoea (EVH) challenge provides objective criteria for exercise-induced asthma (EIA) or exercise-induced bronchoconstriction (EIB), and it was recommended to justify the use of inhaled β₂-agonists by athletes for the Olympics. This paper presents the development of a compact and easy-to-use EVH apparatus for assessing EIB in human subjects. The compact apparatus has been validated on human subjects and the results have been compared to the conventional EVH system. Twenty-two swimmers, including eleven healthy subjects and eleven subjects who had been physician-diagnosed with asthma, were recruited from sport and recreation centers throughout Auckland, New Zealand...
May 16, 2017: Sensors
https://www.readbyqxmd.com/read/28508559/two-weeks-of-repetitive-gut-challenge-reduces-exercise-associated-gastrointestinal-symptoms-and-malabsorption
#5
Atlanta Miall, Anthony Khoo, Christopher Rauch, Rhiannon Snipe, Vera Camões-Costa, Peter R Gibson, Ricardo J S Costa
Debilitating gastrointestinal symptoms are a common feature of endurance running, and may be exacerbated by and (or) limit the ability to tolerate carbohydrate intake during exercise. The study aimed to determine whether two weeks of repetitive gut-challenge during running can reduce exercise associated gastrointestinal symptoms and carbohydrate malabsorption. Endurance runners (n= 18) performed an initial gut-challenge trial (GC1) comprising 2 h running exercise at 60% VO2max (steady state) whilst consuming a formulated gel-disc containing 30 g carbohydrates (2:1 glucose-fructose, 10% w/v) every 20 min, followed by a 1 h running effort bout...
May 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28507165/reliability-and-validity-of-an-agility-like-incremental-exercise-test-with-multidirectional-change-of-direction-movements-in-response-to-a-visual-stimulus
#6
Dennis-Peter Born, Philipp Kunz, Billy Sperlich
The aim of the study was to evaluate the reliability and validity of cardiorespiratory and metabolic variables, that is, peak oxygen uptake (V'O2peak) and heart rate (HRpeak), obtained from an agility-like incremental exercise test for team sport athletes. To investigate the test-retest reliability, 25 team sport athletes (age: 22 ± 3 years, body mass: 75 ± 7 kg, height: 182 ± 6 cm) performed an agility-like incremental exercise test on the SpeedCourt (SC) system incorporating multidirectional change-of-direction (COD) movements twice...
May 2017: Physiological Reports
https://www.readbyqxmd.com/read/28505303/acute-effects-of-aerobic-exercise-on-affect-and-smoking-craving-in-the-weeks-before-and-after-a-cessation-attempt
#7
Ana M Abrantes, Samantha G Farris, Haruka Minami, David R Strong, Deborah Riebe, Richard A Brown
Introduction: Aerobic exercise may improve smoking abstinence via reductions in craving and negative affect, and increases in positive moods. Acute changes in craving and affect before and after structured exercise sessions have not been examined during the weeks prior to and following quit attempts, nor has smoking status been examined in relation to these effects. Given that regular cigarette smoking can be perceived as affect-enhancing and craving-reducing, it is not known whether exercise could contribute additional affective benefit beyond these effects...
May 15, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28503528/the-development-of-anger-management-program-based-on-acceptance-and-commitment-therapy-for-youth-taekwondo-players
#8
Duksun Chang, Seunghyun Hwang
This study aimed to develop an intervention program based on acceptance and commitment therapy (ACT) for youth taekwondo players. Eight sessions of the ACT program were provided to nine youth taekwondo players. The content analysis was conducted for the activities, activity sheets, assignments, and program evaluations. First of all, the results showed that the ACT program changed the participants' diverse psychological inflexibility a flexible and value-oriented state, which was supported by their positive mood changes after each session...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28502461/meta-analysis-of-effects-of-voluntary-slow-breathing-exercises-for-control-of-heart-rate-and-blood-pressure-in-patients-with-cardiovascular-diseases
#9
Yan Zou, Xin Zhao, Yun-Ying Hou, Ting Liu, Qing Wu, Yu-Hui Huang, Xiao-Hua Wang
Rising heart rate (HR) and elevated blood pressure (BP) cause a greater frequency of cardiovascular events. Many patients cannot maintain target HR and BP using pharmacological therapies. To evaluate the effectiveness of voluntary slow breathing exercises in reducing resting HR and BP, we searched Embase (1974 to April 2016), PubMed (1966 to April 2016), the Cochrane Central Register of Controlled Trials (issue 4, April 2016), and PEDro (www.pedro.org.au; 1999 to April 2016). The primary outcome was the mean change in HR at rest...
April 12, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28502420/cardiopulmonary-exercise-testing-and-second-line-pulmonary-function-tests-to-detect-obstructive-pattern-in-symptomatic-smokers-with-borderline-spirometry
#10
Fabiano Di Marco, Silvia Terraneo, Sara Job, Rocco Francesco Rinaldo, Giuseppe Francesco Sferrazza Papa, Maria Adelaide Roggi, Pierachille Santus, Stefano Centanni
BACKGROUND: The need for additional research on symptomatic smokers with normal spirometry has been recently emphasized. Albeit not meeting criteria for Chronic obstructive pulmonary disease (COPD) diagnosis, symptomatic smokers may experience activity limitation, evidence of airway disease, and exacerbations. We, therefore, evaluated whether symptomatic smokers with borderline spirometry (post-bronchodilator FEV1/FVC ratio between 5th to 20th percentile of predicted values) have pulmonary function abnormalities at rest and ventilatory constraints during exercise...
June 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28498224/core-training-in-low-back-disorders-role-of-the-pilates-method
#11
Andrew A Joyce, Dana H Kotler
The Pilates method is a system of exercises developed by Joseph Pilates, which emphasizes recruitment and strengthening of the core muscles, flexibility, and breathing, to promote stability and control of movement. Its focus bears similarity to current evidence-based exercise programs for low back disorders. Spinal stability is a function of three interdependent systems, osseoligamentous, muscular, and neural control; exercise addresses both the muscular and neural function. The "core" typically refers to the muscular control required to maintain functional stability...
May 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28497701/modified-qigong-breathing-exercise-for-reducing-the-sense-of-hunger-on-an-empty-stomach
#12
Alexander P Voroshilov, Alex A Volinsky, Zhixin Wang, Elena V Marchenko
BACKGROUND: The aims of this study were to determine whether a modified Qigong breathing exercise can reduce the sense of hunger and identify possible mechanisms. METHODS: The results from the test group, which performed the exercise, are compared with the control group, which performed deep breathing. Intestinal pressure measurements, stomach pH monitoring, and participant surveys were used for assessment. RESULTS: Stomach pH was increased by 3 (0...
January 1, 2017: Journal of Evidence-based Complementary & Alternative Medicine
https://www.readbyqxmd.com/read/28483221/effect-of-the-external-nasal-dilator-on-adolescent-athleteswith-and-without-allergic-rhinitis
#13
Ricardo Reis Dinardi, Cláudia Ribeiro de Andrade, Cássio da Cunha Ibiapina
OBJECTIVES: The ability to effectively breathe through the nose is an important component of physical exercise. The goal of this study is to evaluate the effect of the external nasal dilator (END) on healthy adolescent athletes and those with allergic rhinitis. METHODS: Clinical trial, double-blind, crossover, in which we evaluated healthy adolescent athletes with allergic rhinitis, using experimental and placebo ENDs, submitted to a maximum cardio-respiratory test in randomized order...
June 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28478693/effects-of-different-physical-therapy-programs-on-perceived-health-status-in-acute-exacerbation-of-chronic-obstructive-pulmonary-disease-patients-a-randomized-clinical-trial
#14
Irene Torres-Sánchez, Marie Carmen Valenza, Maria Dels Àngels Cebriá I Iranzo, Laura López-López, Ma Paz Moreno-Ramírez, Araceli Ortíz-Rubio
PURPOSE: To evaluate the repercussion of different physical therapy interventions on the perceived health status of chronic obstructive pulmonary disease (COPD) patients during acute exacerbation. MATERIALS AND METHODS: Randomized controlled trial. Patients were assigned to: control group (standard medical treatment), controlled breathing + range of motion exercises group or Resistance exercises group. Perceived health status was assessed at baseline and discharge using the EuroQol-5D (EQ-5D) questionnaire...
May 8, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28476919/v%C3%AC-o2-kinetics-associated-with-moderate-intensity-exercise-in-heart-failure-impact-of-intrathecal-fentanyl-inhibition-of-group-iii-iv-locomotor-muscle-afferents
#15
Erik H Van Iterson, Bruce D Johnson, Michael J Joyner, Timothy B Curry, Thomas P Olson
Heart failure (HF) patients demonstrate impaired pulmonary, circulatory, and nervous system responses to exercise. While HF demonstrate prolonged (time-constant, τ) pulmonary oxygen uptake (V̇O2) on-kinetics contributing to exercise intolerance, it is unknown if abnormal V̇O2 kinetics couple with ventilatory and circulatory dysfunction secondary to impaired group III/IV afferents in HF. Because lower-lumbar intrathecal fentanyl inhibits locomotor muscle afferents resulting in improved exercise ventilation and hemodynamics, we tested the hypotheses, HF will demonstrate: 1) rapid V̇O2 on-kinetics, and 2) attenuated steady-state V̇O2 amplitude and oxygen deficit (O2def) during exercise with fentanyl versus placebo...
May 5, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28475760/evaluating-patients-walking-capacity-during-hospitalization-for-lung-cancer-resection%C3%A2
#16
Pedro A Esteban, Nieves Hernández, Nuria M Novoa, Gonzalo Varela
OBJECTIVES: The goal of this study was to describe non-supervised daily physical activity in patients during the period immediately following anatomical lung resection. METHODS: The study was an observational study on 50 consecutive patients (33 men) admitted for anatomical lung resection over a 4-month period. All cases were approached using a minimally invasive technique. Patients were instructed by nursing and physiotherapy staff and asked to wear a portable pedometer (Omron HJ-720 T-E2) from admission until hospital discharge, excluding the day of the operation and the first hours in the recovery room...
May 4, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28471492/oscillating-devices-for-airway-clearance-in-people-with-cystic-fibrosis
#17
REVIEW
Lisa Morrison, Stephanie Innes
BACKGROUND: Chest physiotherapy is widely prescribed to assist the clearance of airway secretions in people with cystic fibrosis. Oscillating devices generate intra- or extra-thoracic oscillations orally or external to the chest wall. Internally they create variable resistances within the airways, generating controlled oscillating positive pressure which mobilises mucus. Extra-thoracic oscillations are generated by forces outside the respiratory system, e.g. high frequency chest wall oscillation...
May 4, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28467885/diving-and-pulmonary-physiology-surfactant-binding-protein-lung-fluid-and-cardiopulmonary-test-changes-in-professional-divers
#18
Zora Susilovic-Grabovac, Cristina Banfi, Denise Brusoni, Massimo Mapelli, Stefania Ghilardi, Ante Obad, Darija Bakovic-Kramaric, Zeljko Dujic, Piergiuseppe Agostoni
Alteration of breathing pattern ranging from an increase of respiratory rate to overt hyperventilation during and after SCUBA diving is frequently reported and is associated with intrathoracic fluid overload. This study was undertaken to assess breathing efficiency after diving and the association with damage of alveolar cells. Ventilation efficiency (VE/VCO2) during maximal cardiopulmonary exercise test (CPET) before and 2h after a standard protocol dive has been analyzed in twelve professional males divers (39...
April 30, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28466818/evaluation-of-relationship-between-aerobic-fitness-level-and-range-of-isocapnic-buffering-periods-during-incremental-exercise-test
#19
S Algul, O Ozcelik, B Yilmaz
The purpose of this study is to examine the relationship between the amount of O2 uptake (VO2) in the range of isocapnic buffering (ICB) periods and aerobic fitness levels of subjects with different exercise tolerance levels. A total of 50 young male subjects (20.8±0.4 years) performed an incremental exercise test using a cycle ergometer to determinetheir anaerobic threshold (AT), respiratory compensation point (RCP) and maximal exercise capacity (Wmax). The ICB period is defined as the region between AT and RCP...
March 31, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28461167/singing-lessons-for-respiratory-health-a-literature-review
#20
REVIEW
Rachel B Goldenberg
OBJECTIVE: Several studies have explored the role of music and singing as a treatment for respiratory symptoms. The objective of this paper was to review the current body of literature in regard to the use of singing as both a physiological and a psychological therapy for respiratory disease and assess the role the singing teacher might play in this treatment. STUDY DESIGN: This is a literature review, discussion of results and directions for further research. METHOD: Multiple databases were searched using keywords such as "respiratory," "physiotherapy," and "pulmonary" in conjunction with "singing...
April 28, 2017: Journal of Voice: Official Journal of the Voice Foundation
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