Dena C. Cederquist

AGE TRENDS OF VARIOUS COMPONENTS OF BODY COMPOSITION AND FUNCTIONAL CHARACTERISTICS IN WOMEN AGED 20-69 YEARS.

In the last two decades considerable progress has been made in the study of body composition and its interrelationship with work performance and aging. The area has been quite adequately reviewed (J. Broiek, 1961; A. Keys and J. Broiek, 1953; E. L. Reynolds, 1951). Considerable data exists today on men. There is relatively little information available concerning the body composition of women and less about the age associated changes in body composition and its relation to health and work performance.

Effects of Exercise and Milk Consumption on Blood Serum Cholesterol in Rats

Abstract This study investigated the effects of exercise on blood cholesterol and correlated those effects with estimates of body fat through experiments with 45 albino weanling rats (15 litter mate trios). The rats were confined to individual cages in a temperature-controlled room and fed a stock diet until they were 11 weeks old. At this time the trios were divided. Group A was continued on a stock diet and exercised for an hour in the morning and an hour in the afternoon by forced swimming. Group B was subjected to the same exercise but a portion of the stock diet was replaced with powdered whole milk, so that 30 percent of the caloric intake was derived from the whole milk supplement. Group C was fed the stock diet but activity was restricted. After 15 weeks blood samples were taken, the animals sacrificed, and the heart and adrenals weighed. The specific gravity of the carcass was also determined. Exercise resulted in a statistically significant decrease in total and free blood serum cholesterol conc...

Effect of Milk Consumption on Endurance Performance

Abstract Nine trained trackmen were divided into experimental (nonmilk) and control (milk) groups. Both groups participated in eight weeks of training. The experimental group was not permitted any milk, cheese, or ice cream except in those dishes in which milk was used in cooking. The controls consumed a minimum of three pints of milk daily and about two pints of ice cream each week. Steady state and all-out treadmill measures were obtained as well as diet recall records. During the period of this investigation no significant effects which might be attributed to milk were observed on performance. With exclusion of milk from the diet the intake of calcium, vitamin A, and riboflavin dropped significantly and below the recommended minimum allowances.