Search Results - "Proctor, D. N"

Comparison of techniques to estimate total body skeletal muscle mass in people of different age groups by Proctor, D N, O'Brien, P C, Atkinson, E J, Nair, K S

“…An estimate of total body muscle mass with dual-energy X-ray absorptiometry (DXA; appendicular muscle mass divided by 0.75) was compared with 24-h urinary…”
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Augmented leg vasoconstriction in dynamically exercising older men during acute sympathetic stimulation by Koch, Dennis W, Leuenberger, Urs A, Proctor, David N

“…Vasoconstrictor responsiveness to acute sympathetic stimulation declines with advancing age in resting skeletal muscle. The purpose of the present study was to…”
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Age-related sarcopenia in humans is associated with reduced synthetic rates of specific muscle proteins by Proctor, D N, Balagopal, P, Nair, K S

“…Sarcopenia of aging is not explained entirely on the basis of age-associated reduced physical activity. Progressive neuromuscular changes and diminishing…”
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Relative influence of physical activity, muscle mass and strength on bone density by PROCTOR, D. N, MELTON, L. J, KHOSLA, S, CROWSON, C. S, O'CONNOR, M. K, RIGGS, B. L

“…In a population-based sample of 348 men (age 22-90 years) and 351 women (age 21-93 years), we evaluated the relationship of bone density assessed at a variety…”
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Cardiac output during exercise by the open circuit acetylene washin method: comparison with direct Fick by Johnson, B. D, Beck, K. C, Proctor, D. N, Miller, J, Dietz, N. M, Joyner, M. J

“…Departments of Internal Medicine and Anesthesiology, Mayo Clinic and Foundation, Rochester, Minnesota 55905 An open-circuit (OpCirc) acetylene uptake cardiac…”
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Leg strength is associated with ventilatory efficiency in older women by Gonzales, J U, Tucker, S H, Kalasky, M J, Proctor, D N

“…The aim of the present study was to determine if leg function is associated with ventilatory efficiency during exercise in healthy older adults. 24 women and…”
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Oxidative capacity of human muscle fiber types: effects of age and training status by Proctor, D N, Sinning, W E, Walro, J M, Sieck, G C, Lemon, P W

“…Morphometry and oxidative capacity of slow-twitch (type I) and fast-twitch (type IIa and IIb) muscle fibers obtained from vastus lateralis needle biopsies were…”
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A single dose of dietary nitrate supplementation protects against endothelial ischemia-reperfusion injury in early postmenopausal women by Somani, Y B, Soares, R N, Gosalia, J, Delgado, J M, Flanagan, M, Basu, S, Kim-Shapiro, D B, Murias, J M, Proctor, D N

“…The onset of menopause and accompanying changes to ovarian hormones often precedes endothelial dysfunction in women. In particular, accelerated impairments in…”
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Role of nitric oxide in exercise hyperaemia during prolonged rhythmic handgripping in humans by Dyke, C K, Proctor, D N, Dietz, N M, Joyner, M J

“…1. We sought to determine whether the vasodilating molecule nitric oxide (NO) contributes to the forearm hyperaemia observed during prolonged rhythmic…”
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Reduced leg blood flow during dynamic exercise in older endurance-trained men by Proctor, David N, Shen, Peter H, Dietz, Niki M, Eickhoff, Tamara J, Lawler, Lori A, Ebersold, Ethan J, Loeffler, Darrell L, Joyner, Michael J

“…Department of Anesthesiology and General Clinical Research Center, Mayo Clinic, Rochester, Minnesota 55905 It is currently unclear whether aging alters the…”
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Contribution of nitric oxide and prostaglandins to reactive hyperemia in the human forearm by Engelke, Keith A, Halliwill, John R, Proctor, David N, Dietz, Niki M, Joyner, Michael J

“…Keith A. Engelke, John R. Halliwill, David N. Proctor, Niki M. Dietz, Michael J. Joyner (With the Technical Assistance of Darrell Loeffler and Tammy Eickhoff)…”
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Influence of age and gender on cardiac output-VO2 relationships during submaximal cycle ergometry by Proctor, David N, Beck, Kenneth C, Shen, Peter H, Eickhoff, Tamara J, Halliwill, John R, Joyner, Michael J

“…Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota 55905 Proctor, David N., Kenneth C. Beck, Peter H. Shen, Tamara J. Eickhoff, John R. Halliwill,…”
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Age and aerobic exercise training effects on whole body and muscle protein metabolism by Short, Kevin R, Vittone, Janet L, Bigelow, Maureen L, Proctor, David N, Nair, K Sreekumaran

“…Aging in humans is associated with loss of lean body mass, but the causes are incompletely defined. Lean tissue mass and function depend on continuous…”
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Effects of genetic selection and voluntary activity on the medial gastrocnemius muscle in house mice by Zhan, Wen-Zhi, Swallow, John G, Garland, Theodore, Jr, Proctor, David N, Carter, Patrick A, Sieck, Gary C

“…Departments of 1  Anesthesiology and 2  Physiology and Biophysics, Mayo Foundation, Rochester, Minnesota 55905; and 3  Department of Zoology, University of…”
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Different vasodilator responses of human arms and legs by Newcomer, Sean C., Leuenberger, Urs A., Hogeman, Cynthia S., Handly, Brian D., Proctor, David N.

“…Forearm vascular responses to intra-arterial infusions of endothelium-dependent and -independent vasodilators have been thoroughly characterized in humans…”
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Peak calf blood flow estimates are higher with Dohn than with Whitney plethysmograph by Proctor, D N, Halliwill, J R, Shen, P H, Vlahakis, N E, Joyner, M J

“…Estimates of calf blood flow with venous occlusion plethysmography vary widely between studies, perhaps due to the use of different plethysmographs…”
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Skeletal muscle mass and the reduction of VO2max in trained older subjects by Proctor, D N, Joyner, M J

“…The role of skeletal muscle mass in the age-associated decline in maximal O2 uptake (VO2max) is poorly defined because of confounding changes in muscle…”
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Heterogeneous vasodilator responses of human limbs: influence of age and habitual endurance training by Newcomer, Sean C, Leuenberger, Urs A, Hogeman, Cynthia S, Proctor, David N

“…Forearm endothelium-dependent vasodilation is impaired with age in sedentary, but not endurance-trained, men. The purpose of this investigation was to…”
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Impaired leg vasodilation during dynamic exercise in healthy older women by Proctor, David N, Koch, Dennis W, Newcomer, Sean C, Le, Khoi U, Leuenberger, Urs A

“…1 Noll Physiological Research Center, 2 General Clinical Research Center, and 3 Department of Kinesiology, The Pennsylvania State University, University Park…”
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Cardiovascular and peak VO2 responses to supine exercise : effects of age and training status by PROCTOR, D. N, SINNING, W. E, BREDLE, D. L, JOYNER, M. J

“…Although stroke volume during exercise is affected by aging and posture, few studies have carefully examined the heart rate, blood pressure, and peak oxygen…”
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