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Biomedical subjects

B Zahorska-Markiewicz

Publications and source records attributed to B Zahorska-Markiewicz.

At least 55 records · Page 3Linked to original sources
PubMed1982

Thermal and metabolic responses to heat exposure in obesity.

Thirteen obese and 13 lean women were each exposed to a hot-humid condition (Tdb = 47 degrees C, Twb = 39 degrees C) for 1 hr. Measurements included rates of heart beat, respiration, sweat evaporation, and resting metabolism, and the rectal and mean skin temperatures. Resting metabolic rate was calculated from oxygen consumption and carbon dioxide production. The obese subjects were more tolerant of heat than were lean subjects, as indicated by the smaller thermal and metabolic responses of the obese.

Adult↗
PubMed1980

Thermic effect of food and exercise in obesity.

The thermic effects of food and exercise were studied on groups of normally [10] weighted and obese [14] subjects using oxygen consumption as the criterion of energy expenditure. The results indicated that the increased resting metabolism resulting from the ingestion of a 4.200 kJ mixed content meal (thermic effect) was similar in the two groups (12-17%). But the further potentiation of this thermic effect resulting from exercise following a meal was virtually absent in the obese group (0.8%), while in the normally weighted controls it amounted to a further 17%. It is suggested that the absence of exercise-induced potentiation in the obese may help to explain their difficulty in regard to maintenance of "normal" weight and weight reduction.

Adolescent↗
PubMed1980

Caffeine and coffee: their influence on metabolic rate and substrate utilization in normal weight and obese individuals.

A series of four trials was carried out to investigate the effects of caffeine and coffee on the metabolic rate and substrate utilization in normal weight and obese individuals. In the first trial 8 mg/kg caffeine was compared with a placebo in normal weight subjects. Metabolic rate increased significantly during the 3 hr after caffeine ingestion. While plasma glucose, insulin, and carbohydrate oxidation did not change significantly, plasma free fatty acid levels rose from 432 +/- 31 to 848 +/- 135 muEq/liter and were accompanied by significant increases in fat oxidation during the last hour of the test. In the second and third trials the effects of coffee providing 4 mg/kg caffeine were studied in control and obese subjects. Metabolic rate increased significantly in both groups; however, significant increases in fat oxidation were only observed in the control group. Plasma free fatty acids did not change in the obese. In the fourth trial, coffee was taken with a 3080 kJ meal. The thermic effect of the meal was significantly greater after coffee than after decaffeinated coffee and again fat oxidation was significantly greater after coffee. In conclusion caffeine/coffee stimulates the metabolic rate in both control and obese individuals; however, this is accompanied by greater oxidation of fat in normal weight subjects.

Adult↗
PubMed1980

Effects of timing on energy expenditure during rest and exercise in obese women.

The metabolic rate of obese women and control group was established by indirect calorimetry. Each subject in resting state and during ergometer cycling test was examined three times a day, before meals. The resting metabolic rate of both groups increased during the day. During exercise the energy expenditure of obese subjects was significantly higher than that of the control group. The presented results show that in obese subjects the highest exercise energy expenditure appeared in the evening and in the afternoon.

Adolescent↗
PubMed1980

Weight reduction and seasonal variation.

The purpose of the study was to establish whether there are variations in the efficiency of slimming treatment conducted in different seasons of the year. The clinical slimming treatment was undertaken over three years in 146 obese women. The efficacy of the treatment was determined by mean daily loss of body weight. The presented results show that weight reduction was season-dependent. The best results, ie the most marked loss of weight, were observed in spring, and the worst during winter.

Adolescent↗