keyword
MENU ▼
Read by QxMD icon Read
search

oxygen saturation exercise

keyword
https://www.readbyqxmd.com/read/29904044/cardiorespiratory-adaptation-in-a-6-minute-walk-test-by-fibrotic-idiopathic-interstitial-pneumonia-patients-who-did-or-did-not-respond-to-pulmonary-rehabilitation
#1
Baptiste Chéhère, Valérie Bougault, Cécile Chenivesse, Jean-Marie Grosbois, Benoit Wallaert
BACKGROUND: Pulmonary rehabilitation (PR) improves performance in the 6-min walk test (6MWT) in a subset of patients with fibrotic idiopathic interstitial pneumonia (f-IIP); however, a large proportion of patients do not respond to PR. AIM: To investigate the effects of a PR program on cardiorespiratory responses during a 6MWT and to identify the characteristics of patients who do not show improved performance after PR. DESIGN: An observational study...
June 14, 2018: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29808103/daily-chronic-intermittent-hypobaric-hypoxia-does-not-induce-chronic-increase-in-pulmonary-arterial-pressure-assessed-by-echocardiography
#2
Jeremias Götschke, Pontus Mertsch, Nikolaus Kneidinger, Diego Kauffmann-Guerrero, Jürgen Behr, Rudolf Maria Huber, Frank Reichenberger, Katrin Milger
Chronic hypoxia causes pulmonary vascular remodeling resulting in persistently increased pulmonary arterial pressures (PAP) even after return to normoxia. Recently, interest in chronic intermittent hypobaric hypoxia (CIHH) was raised because it occurs in subjects working at high altitude (HA) but living in lowland. However, effects of daily CIHH on PAP are unknown. In this pilot study, we included 8 healthy subjects working at (2650 m) each workday for 8-9 h while living and sleeping at LA and 8 matched control subjects living and working at LA...
2018: Canadian Respiratory Journal: Journal of the Canadian Thoracic Society
https://www.readbyqxmd.com/read/29803343/effect-of-increased-inspired-oxygen-on-exercise-performance-in-patients-with-heart-failure-and-normal-ejection-fraction
#3
Parin Shah, Pierpaolo Pellicori, Stella Rimmer, Alan S Rigby, Andrew L Clark
INTRODUCTION: We investigated whether increased concentrations of inspired oxygen (Fio2 ) affects exercise tolerance in patients with heart failure and normal ejection fraction (HeFNEF). METHODS: 46 patients (mean age 75 years (63% male) and median NTproBNP 1432 (interquartile range: 543-2378 ng/l)) with HeFNEF (defined as signs or symptoms of heart failure requiring treatment with diuretics, with a left ventricular ejection fraction of >45% by echocardiography and amino terminal pro brain natriuretic peptide (NTproBNP) >220 ng/l) completed three maximal incremental exercise tests with different Fio2 (21%, 28% and 40%) in random order...
May 23, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29802910/the-feasibility-of-blood-flow-restriction-exercise-in-patients-with-incomplete-spinal-cord-injury
#4
Jon Stavres, Tyler J Singer, Amber Brochetti, Martin Kilbane, Steven Brose, John McDaniel
BACKGROUND: Blood flow restriction (BFR) exercise, which already has shown promise in the able-bodied population, may be a novel method for improving muscle function in the incomplete spinal cord injury (iSCI) population. However, the feasibility and tolerance for BFR exercise in this population is unknown. OBJECTIVE: To determine the feasibility and safety of BFR exercise in the iSCI population, with special attention paid to acute hemodynamic changes and the risk of deep vein thrombosis (DVT)...
May 23, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29795722/acute-cardiovascular-responses-after-a-single-bout-of-blood-flow-restriction-training
#5
Moisés M Picón, Iván M Chulvi, Juan-Manuel T Cortell, Juan Tortosa, Yasser Alkhadar, José Sanchís, Gilberto Laurentino
Different types of exercise might produce reductions in blood pressure (BP). One physiological mechanism that could explain the lowering adaptation effect on BP after an exercise program is an improved in baroreflex control of muscle sympathetic nerve activity. Consequently, exploring the different methods of training and their post-exercise hypotension (PEH) becomes of interest for healthcare providers. Recently, it has been suggested that blood flow restriction training (BFR) can generate PEH. The aim of this study was to determine the acute response on cardiovascular variables after low intensity resistance training with BFR in normotensive subjects...
2018: International Journal of Exercise Science
https://www.readbyqxmd.com/read/29794207/oxygen-therapy-in-copd
#6
Richard D Branson
Long-term oxygen therapy (LTOT) at home has been demonstrated to improve survival in patients with COPD and severe resting hypoxemia. Support for LTOT is based on 2 landmark trials published nearly 4 decades ago. These results form the basis for reimbursement and prescription of LTOT to this day. Recent work has demonstrated no outcome benefit of LTOT in stable COPD patients with moderate desaturation at rest or during activity. Oxygen therapy during activity and exercise has been shown to alleviate symptoms and maintain arterial oxygen saturation, but not improve long-term outcomes...
June 2018: Respiratory Care
https://www.readbyqxmd.com/read/29793014/calf-muscle-oxygen-saturation-during-six-minute-walk-test-and-its-relationship-with-walking-impairment-in-symptomatic-peripheral-artery-disease
#7
Aluísio Andrade-Lima, Gabriel G Cucato, Wagner J R Domingues, Antônio H Germano-Soares, Bruno R Cavalcante, Marilia A Correia, Glauco F Saes, Nelson Wolosker, Andrew W Gardner, Antônio E Zerati, Raphael M Ritti-Dias
OBJECTIVE: Impaired microcirculation is associated with poor walking capacity in symptomatic peripheral artery disease (PAD) patients during treadmill test, however, this test does not simulate the efforts of daily walking of these patients. Thus, the aim of the study was to describe the microcirculation responses during six-minute walk test (6MWT) and to analyze the relationship between microcirculation indicators and walking impairment in symptomatic PAD patients. METHODS: Thirty-four patients were included (mean age = 67...
May 21, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29789413/best-protocol-for-the-sit-to-stand-test-in-subjects-with-copd
#8
Andrea A Morita, Gianna W Bisca, Felipe V C Machado, Nidia A Hernandes, Fabio Pitta, Vanessa S Probst
BACKGROUND: Different protocols for the sit-to-stand test (STS) are available for assessing functional capacity in COPD. We sought to correlate each protocol of the STS (ie, the 5-repetition [5-rep STS], the 30-s STS, and the 1-min STS) with clinical outcomes in subjects with COPD. We also aimed to compare the 3 protocols of the STS, to verify their association and agreement, and to verify whether the 3 protocols are able to predict functional exercise capacity and physical activity in daily life (PADL)...
May 22, 2018: Respiratory Care
https://www.readbyqxmd.com/read/29775547/acute-dietary-nitrate-supplementation-does-not-attenuate-oxidative-stress-or-the-hemodynamic-response-during-submaximal-exercise-in-hypobaric-hypoxia
#9
Colin R Carriker, Paige Rombach, Brooke M Stevens, Roger A Vaughan, Ann L Gibson
PURPOSE: To investigate changes in oxidative stress, arterial oxygen saturation (SaO2), blood pressure (BP), and heart rate (HR) while exercising in hypobaric hypoxia following acute dietary nitrate supplementation. METHODS: Nine well-trained (60.8±7.8 ml/kg/min) males (29±7 years) visited the lab on 3 occasions, each separated by 1 week. Visit 1 included a maximal aerobic cycling test (VO2max) and 5 five-minute increasing intensity exercise bouts in a normobaric environment (1600m)...
May 18, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29775076/walking-with-controlled-breathing-improves-exercise-tolerance-anxiety-and-quality-of-life-in-heart-failure-patients-a-randomized-controlled-trial
#10
Hsiu-Chin Teng, Mei-Ling Yeh, Mei-Hua Wang
BACKGROUND: Patients with heart failure experience not only impaired physical condition, but also their physical activity, moods, and quality of life may be diminished. AIMS: The purpose of this study was to investigate the effects of 12-week walking with breathing program on physical activity tolerance considering time-dependent physiological factors and time-independent interoceptive awareness, as well as psychosocial factors. METHODS: This randomized controlled trial recruited 90 heart failure patients and randomly assigned them...
May 1, 2018: European Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/29771822/pulse-oximetry-and-arterial-oxygen-saturation-during-cardiopulmonary-exercise-testing
#11
Mona Ascha, Anirban Bhattacharyya, Jose A Ramos, Adriano R Tonelli
INTRODUCTION/PURPOSE: Peripheral capillary oxygen saturation (SpO2) is used as surrogate for arterial blood oxygen saturation. We studied the degree of discrepancy between SpO2 and arterial oxygen (SaO2) and identified parameters that may explain this difference. METHODS: We included patients who underwent cardiopulmonary exercise testing (CPET) at Cleveland Clinic. Pulse oximeters with forehead probes measured SpO2 and arterial blood gas (ABG) samples provided the SaO2 both at rest and peak exercise...
April 30, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29750887/the-effects-of-acute-hypoxia-on-tissue-oxygenation-and-circulating-alarmins-in-healthy-adults
#12
C J Boos, C M Lamb, M Midwinter, A Mellor, D R Woods, M Howley, T Stansfield, M Foster, J P O'hara
The binding of high-mobility group box-1 (HMGB-1) to the membrane receptor for advanced glycation end-products (mRAGE) is a key early mediator of non-infectious inflammation and its triggers include ischaemia/hypoxia. The effects of acute hypoxia on soluble RAGE (sRAGE) are unknown. Fourteen healthy adults (50% women; 26.6+/-3.8 years) were assessed at baseline normoxia (T0), followed by four time-points (T90, 95, 100 and 180 minutes) over three hours of continuous normobaric hypoxia (NH, 4450m equivalent) and again 60 minutes after return to normoxia (T240)...
May 10, 2018: Physiological Research
https://www.readbyqxmd.com/read/29733980/cardiovascular-responses-to-dry-apnoeas-at-exercise-in-air-and-in-pure-oxygen
#13
Anna Taboni, Giovanni Vinetti, Paolo Bruseghini, Stefano Camelio, Matteo D'Elia, Christian Moia, Guido Ferretti, Nazzareno Fagoni
If, as postulated, the end of the steady state phase (φ2) of cardiovascular responses to apnoea corresponds to the physiological breaking point, then we may hypothesize that φ2 should become visible if exercise apnoeas are performed in pure oxygen. We tested this hypothesis on 9 professional divers by means of continuous recording of blood pressure (BP), heart rate (fH ), stroke volume (QS ), and arterial oxygen saturation (SpO2 ) during dry maximal exercising apnoeas in ambient air and in oxygen. Apnoeas lasted 45...
May 4, 2018: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29729396/cerebral-oxygen-availability-during-exercise-in-copd-patients-with-cognitive-impairment
#14
Vasileios Andrianopoulos, Ioannis Vogiatzis, Rainer Gloeckl, Robert Bals, Rembert A Koczulla, Klaus Kenn
Insufficient cerebral blood flow regulation to meet increasing metabolic demand during physical exertion could be associated with cognitive impairment. We compared cerebral oxygen availability during exercise in cognitively impaired (CI) to cognitively normal (CN) COPD patients. Fifty-two patients (FEV1 : 51 ± 16%) were classified as CN or CI according to the Montreal Cognitive Assessment. Patients performed cycle-ergometry at 75% peak capacity with continuous measurement of Near-Infrared Spectroscopy frontal-cortex Tissue oxygen Saturation Index (TSI), cerebral haemoglobin indices (oxy/deoxy/total- Hb), transcutaneous carbon-dioxide partial pressure (TcPCO2 ), and arterial oxygen saturation (SpO2 )...
May 2, 2018: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29724390/the-impact-of-carrying-supplemental-oxygen-on-exercise-capacity-and-dyspnea-in-patients-with-interstitial-lung-disease
#15
Deepa Ramadurai, Maeveen Riordan, Bridget Graney, Tara Churney, Amy L Olson, Jeffrey J Swigris
BACKGROUND: May patients with interstitial lung disease (ILD) require supplementary oxygen (O2 ) therapy to maintain normoxia. However, ambulatory O2 delivery devices are constraining and cumbersome. The physiologic and symptomatic impact of these devices on ILD patients is unknown. METHODS: We conducted a prospective study of 30 clinically stable ILD patients (with varying disease severity), half of whom used O2 at baseline. Each subject completed two six-minute walk tests (6MWTs); for O2 users, one walk was completed while wearing a backpack (weight 7...
May 2018: Respiratory Medicine
https://www.readbyqxmd.com/read/29698403/regulation-of-oxidative-phosphorylation-is-different-in-electrically-and-cortically-stimulated-skeletal-muscle
#16
Bernard Korzeniewski
A computer model of the skeletal muscle bioenergetic system was used to study the regulation of oxidative phosphorylation (OXPHOS) in electrically-stimulated and cortically-stimulated skeletal muscle. Two types of the dependence of the intensity of each-step activation (ESA) of OXPHOS complexes on ATP usage activity were tested: power-type dependence and saturating-type dependence. The dependence of muscle oxygen consumption ([Formula: see text]), phosphocreatine (PCr), cytosolic ADP, ATP, inorganic phosphate (Pi), pH and τp (characteristic transition time) of the principal component of the muscle [Formula: see text] on-kinetics on the ATP usage activity was simulated for both types of the ESA intensity-ATP usage activity dependence...
2018: PloS One
https://www.readbyqxmd.com/read/29696212/feasibility-of-high-intensity-interval-training-with-hyperoxia-vs-intermittent-hyperoxia-and-hypoxia-in-cancer-patients-undergoing-chemotherapy-study-protocol-of-a-randomized-controlled-trial
#17
Moritz Schumann, Holger Schulz, Anthony C Hackney, Wilhelm Bloch
Exercise has been well demonstrated to potentially reduce chemotherapy-induced side effects and possibly aid slowing down tumor growth in cancer patients but exercise training adherence is typically low. Thus, training regimens which are perceived less strenuous but do not compromise the training-induced beneficial adaptations will help to increase adherence to exercise and reduce attrition. This 4-armed study aims to investigate the effects of high intensity interval training (HIIT) in hyperoxia versus intermittent hyperoxia and hypoxia in cancer patients undergoing chemotherapy...
December 2017: Contemporary Clinical Trials Communications
https://www.readbyqxmd.com/read/29694504/influence-of-expiratory-positive-airway-pressure-on-cardiac-autonomic-modulation-at-rest-and-in-submaximal-exercise-in-copd-patients
#18
RANDOMIZED CONTROLLED TRIAL
C da L Goulart, E A San Martin, K M K Mansour, P B Schneiders, A L G da Silva
The aim of this study was to evaluate the effect of expiratory positive airway pressure (EPAP) on heart rate variability (HRV) indices at rest and during 6-min walk test (6MWT) in chronic obstructive pulmonary disease (COPD) patients. Fifteen moderate to severe COPD patients were randomized and evaluated with and without (Non-EPAP) a 5 cmH2O EPAP device. Respiratory rate (RR) was collected at rest (5 min), during the 6MWT (5 min), and at recovery (5 min). Indices of HRV were computed in the time domain, in the frequency domain, and nonlinear analysis...
2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29689105/cerebral-desaturation-in-heart-failure-potential-prognostic-value-and-physiologic-basis
#19
Yu-Jen Chen, Jong-Shyan Wang, Chih-Chin Hsu, Pyng-Jing Lin, Feng-Chun Tsai, Ming-Shien Wen, Chi-Tai Kuo, Shu-Chun Huang
Cerebral tissue oxygen saturation (SctO2) reflects cerebral perfusion and tissue oxygen consumption, which decline in some patients with heart failure with reduced ejection fraction (HFrEF) or stroke, especially during exercise. Its physiologic basis and clinical significance remain unclear. We aimed to investigate the association of SctO2 with oxygen transport physiology and known prognostic factors during both rest and exercise in patients with HFrEF or stroke. Thirty-four HFrEF patients, 26 stroke patients, and 17 healthy controls performed an incremental cardiopulmonary exercise test using a bicycle ergometer...
2018: PloS One
https://www.readbyqxmd.com/read/29672229/the-effects-of-mild-hypothermia-on-self-paced-exercise-performance
#20
Steven A H Ferguson, Neil Derek Eves, Brian D Roy, Gary J Hodges, Stephen S Cheung
This study examined self-paced, high-intensity exercise during mild hypothermia and whether hyperoxia may offset any potential impairment. Twelve trained males each completed 15 km time trials in three environmental conditions: Neutral (23{degree sign}C, Fi O2 : 0.21), Cold (0{degree sign}C, Fi O2 : 0.21), and Cold+Hyper (0{degree sign}C, Fi O2 : 0.40). Cold and Cold+Hyper trials occurred after a 0.5{degree sign}C drop in rectal temperature. Rectal temperature was higher (p{less than or equal to}0.016) throughout Neutral compared to Cold and Cold+Hyper; Cold had a higher (p{less than or equal to}0...
April 19, 2018: Journal of Applied Physiology
keyword
keyword
93263
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"