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https://www.readbyqxmd.com/read/28421409/six-minute-walk-test-for-assessing-physical-functional-capacity-in-chronic-heart-failure
#1
REVIEW
Huiyun Du, Parichat Wonggom, Jintana Tongpeth, Robyn A Clark
PURPOSE OF THE REVIEW: The six-minute walk test (6MWT) is a submaximal exercise test for evaluating physical functional capacity. This review aims to report the research on the use of the 6MWT in chronic heart failure (CHF) that has been published in the past 5 years. RECENT FINDINGS: The 6MWT distance does not accurately reflect peak VO2. Minimal clinically important difference in the 6MWT distance, and additional measurements, such as heart rate recovery, can assist in the interpretation of the 6MWT distance, so management decisions can be made...
April 18, 2017: Current Heart Failure Reports
https://www.readbyqxmd.com/read/28419703/exercise-capacity-following-pediatric-heart-transplantation-a-systematic-review
#2
Sara Peterson, Jennifer A Su, Jacqueline R Szmuszkovicz, Robert Johnson, Barbara Sargent
Pediatric HTs account for 13% of all HTs with >60% of recipients surviving at least 10 years post-HT. The purpose of this systematic review is to synthesize the literature on exercise capacity of pediatric HT recipients to improve understanding of the mechanisms that may explain the decreased exercise capacity. Six databases were searched for studies that compared the exercise capacity of HT recipients ≤21 years old with a control group or normative data. Sixteen studies were included. Pediatric HT recipients, as compared to controls or normative data, exhibit significantly higher resting HR, and at peak exercise exhibit significantly decreased HR, VO2 , power, work, minute ventilation, and exercise duration...
April 17, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28400247/quality-of-life-dyspnea-and-functional-exercise-capacity-following-a-first-episode-of-pulmonary-embolism-results-of-the-elope-cohort-study
#3
Susan R Kahn, Arash Akaberi, John T Granton, David R Anderson, Philip S Wells, Marc A Rodger, Susan Solymoss, Michael J Kovacs, Lawrence Rudski, Avi Shimony, Carole Dennie, Chris Rush, Paul Hernandez, Shawn D Aaron, Andrew M Hirsch
BACKGROUND: We aimed to evaluate health-related quality of life (QOL), dyspnea and functional exercise capacity during the year following the diagnosis of a first episode of pulmonary embolism. METHODS: Prospective multicenter cohort study of 100 patients with acute pulmonary embolism recruited at 5 Canadian hospitals from 2010-2013. We measured the outcomes QOL (by SF-36 and PEmb-QOL measures), dyspnea (by the University of California San Diego Shortness of Breath Questionnaire (SOBQ)) and six-minute walk distance at Baseline, 1, 3, 6, and 12 months after acute pulmonary embolism...
April 8, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28398017/differential-effects-of-phosphodiesterase-5-inhibition-in-chronic-cardiac-decompensation-depending-on-the-type-whether-hfref-or-hfpef-of-heart-failure-a-meta-analysis
#4
Renato DE Vecchis, Arturo Cesaro, Carmelina Ariano
INTRODUCTION: According to 2015 ESC/ERS guidelines for the diagnosis and treatment of pulmonary hypertension(PH), no specific drug is currently indicated for PH related to left heart disease( PH-LDH), i.e., the one secondary to left chronic heart failure (CHF), which coincides with the group 2 of the PH classification endorsed by the above-mentioned guidelines. In fact, adoption of therapies that specifically apply for so-called pulmonary arterial hypertension (group 1 of the PH classification) has been regarded as substantially contraindicated in patients with PH- LHD, according to current ESC/ERS guidelines...
April 10, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28386556/effects-of-high-intensity-interval-training-on-aerobic-capacity-in-cardiac-patients-a-systematic-review-with-meta-analysis
#5
Bin Xie, Xianfeng Yan, Xiangna Cai, Jilin Li
Purpose. The aim of this study was to compare the effects of high-intensity interval training (INTERVAL) and moderate-intensity continuous training (CONTINUOUS) on aerobic capacity in cardiac patients. Methods. A meta-analysis identified by searching the PubMed, Cochrane Library, EMBASE, and Web of Science databases from inception through December 2016 compared the effects of INTERVAL and CONTINUOUS among cardiac patients. Results. Twenty-one studies involving 736 participants with cardiac diseases were included...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28385916/mild-aerobic-exercise-blocks-elastin-fiber-fragmentation-and-aortic-dilatation-in-a-mouse-model-of-marfan-syndrome-associated-aortic-aneurysm
#6
Christine P Gibson, Cory Nielsen, Ramona Alex, Kimbal Cooper, Michael Farney, Douglas Gaufin, Jason Z Cui, Cornelis van Breemen, Tom L Broderick, Johana Vallejo-Elias, Mitra Esfandiarei
Regular low impact physical activity is generally allowed in patients with Marfan syndrome, a connective tissue disorder caused by heterozygous mutations in the fibrillin-1 gene. However, being above-average in height encourages young adults with this syndrome to engage in high-intensity contact sports, which unfortunately increases the risk for aortic aneurysm and rupture, the leading cause of death in Marfan syndrome. In this study, we investigated the effects of voluntary (wheel-cage) or forced (treadmill) aerobic exercise at different intensities on aortic function and structure in a mouse model of Marfan syndrome...
April 6, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28382813/oxygen-uptake-and-body-composition-after-aquatic-physical-training-in-women-with-fibromyalgia-a-randomized-controlled-trial
#7
Carolina P Andrade, Antonio R Zamunér, Meire Forti, Thalita F França, Nayara Y Tamburús, Ester Silva
BACKGROUND: Aquatic physical training (APT) has been strongly recommended to improve symptoms in fibromyalgia syndrome (FMS). However, its effects on body composition and whether lean body mass (LBM) directly influences the aerobic functional capacity of this population are still not clear. AIM: To investigate whether APT can help improve body composition and increase the aerobic functional capacity in women with FMS, and whether oxygen consumption (VO2) related to LBM can better quantify the functional capacity of this population...
April 4, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28377168/a-reference-equation-for-normal-standards-for-vo2-max-analysis-from-the-fitness-registry-and-the-importance-of-exercise-national-database-friend-registry
#8
REVIEW
Jonathan Myers, Leonard A Kaminsky, Ricardo Lima, Jeffrey Chistle, Euan Ashley, Ross Arena
Existing normal standards for maximal oxygen uptake (VO2 max) are problematic because they tend to be population specific, lack normal distribution and portability, and are poorly represented by women. The objective of the current study was to apply the Fitness Registry and the Importance of Exercise: A National Data Base (FRIEND) Registry to improve upon previous regression formulas for normal standards for VO2 max using treadmill testing. Maximal treadmill tests were performed in 7783 healthy men and women (20-79years; maximal RER >1...
April 1, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/28376949/the-effect-of-diet-temperature-and-intermittent-low-oxygen-on-the-metabolism-of-rainbow-trout
#9
Kevin T Stiller, Klaus H Vanselow, Damian Moran, Guido Riesen, Wolfgang Koppe, Carsten Dietz, Carsten Schulz
An automated respirometer system was used to measure VO2, protein catabolism as ammonia quotient and the energy budget to evaluate whether the crude protein content of a standard protein (SP) diet (42·5 %) or a high-protein (HP) diet (49·5 %) influences metabolism in rainbow trout under challenging intermittent, low dissolved oxygen concentrations. In total, three temperature phases (12, 16, 20°C) were tested sequentially, each of which were split into two oxygen periods with 5 d of unmanipulated oxygen levels (50-70 %), followed by a 5d manipulated oxygen period (16...
April 5, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28364680/assessment-of-macro-and-micro-oxygenation-parameters-during-fractional-fluid-infusion-a-pilot-study
#10
Marc-Olivier Fischer, Vincent Bonnet, Emmanuel Lorne, Jean-Yves Lefrant, Olivier Rebet, Benoît Courteille, Charlotte Lemétayer, Jean-Jacques Parienti, Jean-Louis Gérard, Jean-Luc Fellahi, Jean-Luc Hanouz
PURPOSE: The main goal of this study was to assess whether maximal fluid infusion improves both oxygen delivery (DO2) and micro-circulatory parameters during hemodilution. The secondary objective was to assess the ability of baseline micro-circulatory parameters to predict oxygen consumption (VO2) response following fluid infusion. MATERIALS AND METHODS: In a postoperative cardiac ICU, patients received repeated fluid infusion until stroke volume (SV) was maximized...
March 27, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28359608/changes-in-ventilatory-response-to-exercise-in-trained-athletes-respiratory-physiological-benefits-beyond-cardiovascular-performance
#11
Adriano di Paco, Bruno-Pierre Dubé, Pierantonio Laveneziana
INTRODUCTION: The beneficial impact of an 8-month competitive season on the ventilatory profile response to exercise in soccer players has never been evaluated. MATERIAL AND METHODS: Ventilatory profile (evaluated by determining individual tidal volume [VT] relative to minute ventilation [VE] inflection points during exercise) and metabolic responses to incremental exercise were evaluated in 2 professional soccer teams before and after an 8-month competitive season...
March 27, 2017: Archivos de Bronconeumología
https://www.readbyqxmd.com/read/28356624/relation-between-change-in-exercise-capacity-and-change-in-blood-amino-acids-in-patients-with-chronic-heart-failure
#12
Nobuo Morotomi, Masakazu Saitoh, Noriko Ishii, Kayoko Ohno, Masatoshi Nagayama, Nobuyuki Kawate, Masazumi Mizuma
[Purpose] Although cardiac rehabilitation (CR) is recommended for patients with chronic heart failure (CHF), adequate exercise effect cannot be obtained in elderly patients. Administration of amino acids (AA) to CHF patients has been reported to improve exercise capacity, but the changes in AA composition in plasma before and after CR had not been reported. This study aimed to measure plasma levels of AA in CHF patients and compare with values of normal range. In addition the relationship between the change of exercise capacity and AA were examined...
March 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28351132/control-of-multilevel-resistance-in-vanadium-dioxide-by-electric-field-using-hybrid-dielectrics
#13
Kaleem Abbas, Jaeseok Hwang, Garam Bae, Hongsoo Choi, Dae Joon Kang
We investigate the effect of electric field on VO2 back-gated field effect transistor (FET) devices. Using hybrid dielectric layers, we demonstrate the highest resistance modulation on the order of 10(2) in VO2 at a positive gate bias of 80 V (1.6 MV/cm). VO2 FET devices are prepared on SiO2 substrates of different thicknesses (100-300 nm) and hybrid dielectric layers of Al2O3/SiO2 (500 nm). For thicknesses less than 300 nm, no electric-field effects are observed, whereas for a 300 nm thickness, a small decrease in resistance is observed under a 0...
April 6, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28350537/comparison-of-structured-and-unstructured-physical-activity-training-on-predicted-vo2max-and-heart-rate-variability-in-adolescents-a-randomized-control-trial
#14
Vivek Kumar Sharma, Senthil Kumar Subramanian, Krishnakumar Radhakrishnan, Rajathi Rajendran, Balasubramanian Sulur Ravindran, Vinayathan Arunachalam
BACKGROUND: Physical inactivity contributes to many health issues. The WHO-recommended physical activity for adolescents encompasses aerobic, resistance, and bone strengthening exercises aimed at achieving health-related physical fitness. Heart rate variability (HRV) and maximal aerobic capacity (VO2max) are considered as noninvasive measures of cardiovascular health. The objective of this study is to compare the effect of structured and unstructured physical training on maximal aerobic capacity and HRV among adolescents...
March 28, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28346572/effectiveness-of-cardiac-rehabilitation-for-prevention-and-treatment-of-sarcopenia-in-patients-with-cardiovascular-disease-a-retrospective-cross-sectional-analysis
#15
H Harada, H Kai, H Niiyama, Y Nishiyama, A Katoh, N Yoshida, Y Fukumoto, H Ikeda
OBJECTIVE: Sarcopenia is a syndrome characterized by progressive and generalized loss of skeletal muscle mass and strength, with the risk of frailty and poor quality of life. This study aimed to clarify the clinical characteristics of sarcopenia and to investigate the effects of comprehensive cardiac rehabilitation (CCR), including nutrition, physical exercise and medication, in patients with cardiovascular disease (CVD). METHODS: We retrospectively studied 322 inpatients with CVD (age 72±12 years)...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28345260/resistance-training-and-aerobic-training-improve-muscle-strength-and-aerobic-capacity-in-chronic-inflammatory-demyelinating-polyneuropathy
#16
Lars H Markvardsen, Kristian Overgaard, Karen Heje, Søren H Sindrup, Ingelise Christiansen, John Vissing, Henning Andersen
INTRODUCTION: We investigated the effects of aerobic and resistance exercise in patients with chronic inflammatory demyelinating polyneuropathy (CIDP). METHODS: Eighteen CIDP patients treated with subcutaneous immunoglobulin performed 12 weeks of aerobic exercise and 12 weeks of resistance exercise after a run-in period of 12 weeks without exercise. Three times weekly the participants performed aerobic exercise on an ergometer bike or resistance exercise with unilateral training of knee and elbow flexion/extension...
March 27, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28340895/post-operative-consequences-of-hemodynamic-optimization
#17
A Lazkani, G Lebuffe
Hemodynamic optimization begins with a medical assessment to identify the high-risk patients. This stratification is needed to customize the choice of hemodynamic support that is best adapted to the patient's level of risk, integrating the use of the least invasive procedures. The macro-circulatory hemodynamic approach aims to maintain a balance between oxygen supply (DO2) and oxygen demand (VO2). Volume replacement plays a crucial role based on the titration of fluid boluses according to their effect on measured stroke volume or indices of preload dependency...
December 2016: Journal of Visceral Surgery
https://www.readbyqxmd.com/read/28340292/combined-spiroergometry-and-31-p-mrs-of-human-calf-muscle-during-high-intensity-exercise
#18
K Moll, A Gussew, C Hein, N Stutzig, J R Reichenbach
Simultaneous measurements of pulmonary oxygen consumption (VO2 ), carbon dioxide exhalation (VCO2 ) and phosphorus magnetic resonance spectroscopy ((31) P-MRS) are valuable in physiological studies to evaluate muscle metabolism during specific loads. Therefore, the aim of this study was to adapt a commercially available spirometric device to enable measurements of VO2 and VCO2 whilst simultaneously performing (31) P-MRS at 3 T. Volunteers performed intense plantar flexion of their right calf muscle inside the MR scanner against a pneumatic MR-compatible pedal ergometer...
March 24, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28340191/cardiac-health-and-fitness-of-colorado-male-female-firefighters
#19
K Li, T Lipsey, H J Leach, T L Nelson
Background: Cardiovascular disease (CVD) is documented as the leading cause of mortality in on-duty firefighters. Aims: To examine the prevalence of metabolic syndrome (MetS) components, cardiorespiratory fitness levels and the association between them in firefighters in Colorado, USA. Methods: This study included male and female Colorado firefighters. MetS was identified where three or more metabolic abnormalities were present, using Cholesterol Education Program/Adult Treatment Panel III guidelines...
March 16, 2017: Occupational Medicine
https://www.readbyqxmd.com/read/28325109/feasibility-and-effects-of-a-combined-adjuvant-high-intensity-interval-strength-training-in-breast-cancer-patients-a-single-center-pilot-study
#20
Sebastian Viktor Waldemar Schulz, Roman Laszlo, Stephanie Otto, Dmytro Prokopchuk, Uwe Schumann, Florian Ebner, Jens Huober, Jürgen Michael Steinacker
PURPOSE: To evaluate feasibility of an exercise intervention consisting of high-intensity interval endurance and strength training in breast cancer patients. METHODS: Twenty-six women with nonmetastatic breast cancer were consecutively assigned to the exercise intervention- (n= 15, mean age 51.9 ± 9.8 years) and the control group (n = 11, mean age 56.9 ± 7.0 years). Cardiopulmonary exercise testing that included lactate sampling, one-repetition maximum tests and a HADS-D questionnaire were used to monitor patients both before and after a supervised six weeks period of either combined high-intensity interval endurance and strength training (intervention group, twice a week) or leisure training (control group)...
March 21, 2017: Disability and Rehabilitation
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