Search Results - "Horowitz, J. F."

Regulation of plasma ceramide levels with fatty acid oversupply: evidence that the liver detects and secretes de novo synthesised ceramide by Watt, M. J., Barnett, A. C., Bruce, C. R., Schenk, S., Horowitz, J. F., Hoy, A. J.

“…Aims/hypothesis Plasma ceramide concentrations correlate with insulin sensitivity, inflammation and atherosclerotic risk. We hypothesised that plasma ceramide…”
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Role of pulsatile growth hormone (GH) secretion in the regulation of lipolysis in fasting humans by Goldenberg, N, Horowitz, J F, Gorgey, A, Sakharova, A, Barkan, A L

“…The increase in growth hormone (GH) secretion during a prolonged fast stimulates lipolytic rate, thereby augmenting the mobilization of endogenous energy at a…”
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Lipid metabolism during endurance exercise by HOROWITZ, J. F, KLEIN, S

“…Endogenous triacylglycerols represent an important source of fuel for endurance exercise. Triacylglycerol oxidation increases progressively during exercise;…”
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Regulation of endogenous fat and carbohydrate metabolism in relation to exercise intensity and duration by Romijn, J A, Coyle, E F, Sidossis, L S, Gastaldelli, A, Horowitz, J F, Endert, E, Wolfe, R R

“…Stable isotope tracers and indirect calorimetry were used to evaluate the regulation of endogenous fat and glucose metabolism in relation to exercise intensity…”
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Effect of pinitol treatment on insulin action in subjects with insulin resistance by A Davis, M Christiansen, J F Horowitz, S Klein, M K Hellerstein, R E Ostlund, Jr

“…Effect of pinitol treatment on insulin action in subjects with insulin resistance. A Davis , M Christiansen , J F Horowitz , S Klein , M K Hellerstein and R E…”
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Inflammation and metabolism gene sets in subcutaneous abdominal adipose tissue are altered 1 hour after exercise in adults with obesity by Ludzki, A C, Schleh, M W, Krueger, E M, Taylor, N M, Ryan, B J, Baldwin, T C, Gillen, J B, Ahn, C, Varshney, P, Horowitz, J F

“…Although the health benefits of exercise in adults with obesity are well described, the direct effects of exercise on adipose tissue that may lead to improved…”
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Cycling efficiency is related to the percentage of type I muscle fibers by Coyle, E F, Sidossis, L S, Horowitz, J F, Beltz, J D

“…We determined that the variability in the oxygen cost and thus the caloric expenditure of cycling at a given work rate (i.e., cycling economy) observed among…”
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High efficiency of type I muscle fibers improves performance by Horowitz, J F, Sidossis, L S, Coyle, E F

“…We have recently demonstrated that people with a high percentage of Type I muscle fibers display a relatively high muscular efficiency when cycling. These…”
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Relatively low endogenous fatty acid mobilization and uptake helps preserve insulin sensitivity in obese women by Van Pelt, D W, Newsom, S A, Schenk, S, Horowitz, J F

“…Background: Although obesity is commonly linked with metabolic disease risk, some obese adults do not develop metabolic abnormalities, such as insulin…”
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Whole-body and adipose tissue glucose metabolism in response to short-term fasting in lean and obese women by HOROWITZ, Jeffrey F, COPPACK, Simon W, KLEIN, Samuel

“…Alterations in glucose metabolism during early fasting may be an important trigger of the hormonal and metabolic responses to fasting. The purpose of this…”
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Fatty acid mobilization from adipose tissue during exercise by Horowitz, Jeffrey F

“…By far the largest energy reserve in the human body is adipose tissue triglycerides, and these reserves are an important source of fuel during prolonged…”
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Load and velocity of contraction influence gross and delta mechanical efficiency by Sidossis, L S, Horowitz, J F, Coyle, E F

“…The effects of three different cadences and five different work rates on Gross (GE) and Delta Efficiency (DE) during cycle ergometry were studied. Fifteen…”
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Effect of gender on lipid kinetics during endurance exercise of moderate intensity in untrained subjects by Mittendorfer, Bettina, Horowitz, Jeffrey F, Klein, Samuel

“…We evaluated lipid metabolism during 90 min of moderate-intensity (50% VO(2) peak) cycle ergometer exercise in five men and five women who were matched on…”
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Preexercise medium-chain triglyceride ingestion does not alter muscle glycogen use during exercise by Horowitz, Jeffrey F, Mora-Rodriguez, Ricardo, Byerley, Lauri O, Coyle, Edward F

“…Department of Kinesiology and Health Education, The Human Performance Laboratory, The University of Texas at Austin, Austin, Texas 78712 This investigation…”
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Gender differences in lipid and glucose kinetics during short-term fasting by Mittendorfer, B, Horowitz, J F, Klein, S

“…Data obtained from studies conducted in animal models and humans suggest that gender affects the metabolic response to fasting. However, differences in body…”
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Whole body and abdominal lipolytic sensitivity to epinephrine is suppressed in upper body obese women by Horowitz, J F, Klein, S

“…We measured whole body and regional lipolytic and adipose tissue blood flow (ATBF) sensitivity to epinephrine in 8 lean [body mass index (BMI): 21 +/- 1…”
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Oxidation of nonplasma fatty acids during exercise is increased in women with abdominal obesity by Horowitz, Jeffrey F, Klein, Samuel

“…Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri 63110 We evaluated plasma fatty acid availability and plasma and…”
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Lipolytic suppression following carbohydrate ingestion limits fat oxidation during exercise by Horowitz, J.F, Mora-Rodriguez, R, Byerley, L.O, Coyle, E.F

“…This study determined if the suppression of lipolysis after preexercise carbohydrate ingestion reduces fat oxidation during exercise. Six healthy, active men…”
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Metabolic responses to preexercise meals containing various carbohydrates and fat by Horowitz, JF, Coyle, EF

“…After a 12-h fast six different meals (potatoes, rice, sucrose solution, potatoes + margarine, rice + margarine, and a confectionery bar), each containing 0.7…”
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Effect of short-term fasting on lipid kinetics in lean and obese women by Horowitz, J.F. (Washington University School of Medicine, St. Louis, MO.), Coppack, S.W, Paramore, D, Cryer, P.E, Zhao, G, Klein, S

“…We evaluated whole body and regional adipose tissue lipid kinetics and norepinephrine (NE) spillover during brief fasting in six lean [body mass index (BMI) 21…”
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