Results 261 to 270 of about 41,366 (306)

Isometric Occupational Exercise and the Incidence of Hypertension

Journal of Occupational and Environmental Medicine, 1985
The effect on blood pressure of regular exposure to isometric exercise was studied by measuring the incidence of hypertension among 4,273 men classified according to occupational isometric activity. Incidence of hypertension was lower among men in jobs with moderate or heavy isometric activity. This difference persisted after statistical adjustment for
C, Buck, A P, Donner
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Isometric Exercise and the Cardiovascular System

The Physician and Sportsmedicine, 1981
In brief: There is little evidence that isometric exercise benefits the cardiovascular system, and many physicians believe that it imposes undue demands on the myocardium, so they prohibit such exercises for middle-aged or coronary disease patients. This review article examines the validity of this conclusion by summarizing the effects of isometric ...
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BRIEF MAXIMAL ISOMETRIC EXERCISE IN HYPERTENSION

Journal of the American Geriatrics Society, 1971
Abstract Brief, maximal isometric exercise of six seconds' duration, repeated three times daily for five to eight weeks may be associated with lowering of the blood pressure in hypertensive patients. In 8 subjects with hypertension there was a decrease of 16–42 mm Hg in systolic pressure and 2–24 mm in diastolic pressure.
B, Kiveloff, O, Huber
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Ocular Hemodynamics during Isometric Exercise

Microvascular Research, 2001
The autoregulatory capacity of the human retina is well documented, but the pressure-flow relationship of the human choroid is still a matter of controversy. Recent data, using laser Doppler flowmetry to measure choroidal blood flow, indicate that the choroid has some autoregulatory potential, whereas most data using other techniques for the assessment
B, Kiss, S, Dallinger, K, Polak, O, Findl, H G, Eichler, L, Schmetterer   +5 more
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Plasma Catecholamines during Sustained Isometric Exercise

Clinical Science, 1973
1. Plasma catecholamine, haemodynamic and metabolic responses to sustained isometric exercise were studied in eight healthy subjects, who maintained handgrip at the 30% level of maximal voluntary contraction (MVC) for as long as possible. 2. The sustained handgrip was accompanied by a significant increase in plasma noradrenaline (NA) and
S, Kozlowski, Z, Brzezinska, K, Nazar, W, Kowalski, M, Franczyk   +4 more
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An analysis of the left ventricular response to isometric exercise

American Heart Journal, 1974
Abstract Analysis of the left ventricular response to isometric exercise was performed in a group of patients undergoing diagnostic cardiac catheterization. A normal response was observed in nine patients with normal resting hemodynamics (Group I).
M A, Quinones, W H, Gaasch, E, Waisser, H G, Thiel, J K, Alexander   +4 more
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Energy Cost of Isometric Exercise

Research Quarterly. American Association for Health, Physical Education and Recreation, 1960
Abstract The metabolic cost of static exercise was studied in relation to work load. The exercise consisted of the subjects holding 50-, 35-, and 20-lb. weights with the knees partially flexed. Rather sizable oxygen requirements and oxygen debts were obtained, which seemed to increase linearly as the size of the weight increased.
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ISOMETRIC EXERCISE AND HYPERTENSION

The Lancet, 1973
B, Kiveloff, O, Huber
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Isometric Exercise Testing-Reply

Archives of Internal Medicine, 1983
In Reply. —Dr Simmons raises two important questions: (1) Can contracting muscles develop force without shortening? (2) What is the precise mechanism for the increase in BP observed during isometric exercise? Before answering the first question, I want to make clear that the term shortening as used herein refers to the external length of the muscle ...
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Effect of Isotonic and Isometric Exercises on Heart Rate

Research Quarterly. American Association for Health, Physical Education and Recreation, 1966
Abstract Twelve subjects were used to determine the effect of isotonic and isometric exercises on heart rate using a military press in a sitting position. The isotonic exercise was performed for 45 sec. with one half of maximum resistance, and the isometric exercises were performed for 45 sec, with one half, two thirds, and maximum resistance.
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