Oxygen Consumption

Publication Title: 
Congestive Heart Failure (Greenwich, Conn.)

Although exercise is an important component of heart failure management, optimal regimens, particularly in heart failure with preserved ejection fraction (HFPEF), are uncertain. Tai chi (TC) is a mind-body exercise that may have potential benefits but has not been studied in this population. The authors randomized 16 patients with HFPEF to either 12 weeks TC or aerobic exercise. Assessments included peak oxygen uptake, 6-minute walk, quality of life, echocardiography, mood, and self-efficacy at baseline and at 12 weeks.

Author(s): 
Yeh, Gloria Y.
Wood, Malissa J.
Wayne, Peter M.
Quilty, Mary T.
Stevenson, Lynne W.
Davis, Roger B.
Phillips, Russell S.
Forman, Daniel E.
Publication Title: 
Diabetologia

AIMS/HYPOTHESIS: Previous studies on isolated islets have demonstrated tight coupling between calcium (Ca(2+)) influx and oxygen consumption rate (OCR) that is correlated with insulin secretion rate (ISR). To explain these observations, we have proposed a mechanism whereby the activation of a highly energetic process (Ca(2+)/metabolic coupling process [CMCP]) by Ca(2+) mediates the stimulation of ISR. The aim of the study was to test whether impairment of the CMCP could play a role in the development of type 2 diabetes.

Author(s): 
Rountree, A. M.
Reed, B. J.
Cummings, B. P.
Jung, S.-R.
Stanhope, K. L.
Graham, J. L.
Griffen, S. C.
Hull, R. L.
Havel, P. J.
Sweet, I. R.
Publication Title: 
Obesity (Silver Spring, Md.)

OBJECTIVE: This study investigated the relationship between in vitro lipid content in myotubes and in vivo whole body phenotypes of the donors such as insulin sensitivity, intramyocellular lipids (IMCL), physical activity, and oxidative capacity. DESIGN AND METHODS: Six physically active donors were compared to six sedentary lean and six T2DM. Lipid content was measured in tissues and myotubes by immunohistochemistry. Ceramides, triacylglycerols, and diacylglycerols (DAGs) were measured by LC-MS-MS and GC-FID.

Author(s): 
Bajpeyi, Sudip
Myrland, Cassandra K.
Covington, Jeffrey D.
Obanda, Diana
Cefalu, William T.
Smith, Steven R.
Rustan, Arild C.
Ravussin, Eric
Publication Title: 
Zeitschrift Für Erkrankungen Der Atmungsorgane

Twenty patients with chronic obstructive bronchitis were submitted to a 6-week rehabilitation program including bicycle training, breathing exercise, inhalation, massage, short wave therapy and others. Before and after 6-week training we investigated ventilatory and blood gas parameters and pulmonary artery pressure at rest and during exercise. There was no change in the oxygen uptake on the same exercise stage. We found an insignificant decrease of the pulmonary artery pressure at rest and during exercise.

Author(s): 
Rabe, U.
Evers, H.
Publication Title: 
Clinical Nursing Research

The purpose was to examine neuromuscular release massage therapy (NRMT) as an intervention for individuals with chronic obstructive lung disease (COLD) to improve pulmonary function, respiratory muscle strength, and quality of life. Variables measured were thoracic gas volume, peak flow, oxygen saturation, blood pressure, heart rate, forced expiratory volume in one second (FEV1), forced vital capacity (FVC), FEV1/FVC, and quality of life to determine if improvement occurred with 24 weekly treatments of NRMT.

Author(s): 
Beeken, J. E.
Parks, D.
Cory, J.
Montopoli, G.
Publication Title: 
Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer

Cancer patients frequently experience considerable loss of physical capacity and general wellbeing when diagnosed and treated for their disease. The aim of this study was to evaluate the feasibility, physical capacity, and health benefits of a multidimensional exercise program for cancer patients during advanced stages of disease who are undergoing adjuvant or high-dose chemotherapy. The supervised program included high- and low-intensity activities (physical exercise, relaxation, massage, and body-awareness training).

Author(s): 
Adamsen, Lis
Midtgaard, Julie
Rorth, Mikael
Borregaard, Niels
Andersen, Christina
Quist, Morten
Møller, Tom
Zacho, Morten
Madsen, Jan K.
Knutsen, Lasse
Publication Title: 
BMC complementary and alternative medicine

BACKGROUND: Little is known about the metabolic and heart rate responses to a typical hatha yoga session. The purposes of this study were 1) to determine whether a typical yoga practice using various postures meets the current recommendations for levels of physical activity required to improve and maintain health and cardiovascular fitness; 2) to determine the reliability of metabolic costs of yoga across sessions; 3) to compare the metabolic costs of yoga practice to those of treadmill walking.

Author(s): 
Hagins, Marshall
Moore, Wendy
Rundle, Andrew
Publication Title: 
Journal of Applied Physiology (Bethesda, Md.: 1985)

Dietary supplementation with beetroot juice (BR), containing approximately 5-8 mmol inorganic nitrate (NO3(-)), increases plasma nitrite concentration ([NO2(-)]), reduces blood pressure, and may positively influence the physiological responses to exercise. However, the dose-response relationship between the volume of BR ingested and the physiological effects invoked has not been investigated.

Author(s): 
Wylie, Lee J.
Kelly, James
Bailey, Stephen J.
Blackwell, Jamie R.
Skiba, Philip F.
Winyard, Paul G.
Jeukendrup, Asker E.
Vanhatalo, Anni
Jones, Andrew M.
Publication Title: 
The Journal of Experimental Biology

The effects of long-term starvation and subsequent refeeding on haematological variables, behaviour, rates of oxygen consumption and intermediary and energy metabolism were studied in morphologically similar surface- and cave-dwelling salamanders. To provide a hypothetical general model representing the responses of amphibians to food stress, a sequential energy strategy has been proposed, suggesting that four successive phases (termed stress, transition, adaptation and recovery) can be distinguished.

Author(s): 
Hervant, F.
Mathieu, J.
Durand, J.
Publication Title: 
Journal of Vascular Surgery

OBJECTIVE: The purpose of this study was to determine whether a 6-month exercise rehabilitation program can improve cardiovascular risk factors in patients with peripheral arterial occlusive disease (PAOD). METHODS: Thirty-four patients (mean age, 68 +/- 8 years; range 54-84 years) with PAOD with intermittent claudication (Fontaine stage II) and 14 longitudinal controls of comparable age with stage II PAOD enrolled in an exercise intervention at the University Medical Center and Veterans Affairs Medical Center at Baltimore, Maryland.

Author(s): 
Izquierdo-Porrera, A. M.
Gardner, A. W.
Powell, C. C.
Katzel, L. I.

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