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Biomedical subjects

M Bagwell

Publications and source records attributed to M Bagwell.

11 recordsLinked to original sources
PubMed1991

Television viewing and obesity in adult females.

We measured the relation between time spent watching television per week and obesity in 4,771 adult females. After controlling for age, education, cigarette smoking, length of work week, and weekly duration of exercise, females who reported three to four hours of TV viewing per day showed almost twice the prevalence of obesity (body fat greater than 30 percent), and those who reported more than four hours of TV watching per day showed more than double the prevalence of obesity, compared to the reference group (less than 1 hr/day). Part of the TV/obesity association was a function of differences in exercise duration among the four TV viewing categories.

Adipose Tissue↗
PubMedDate not supplied

The relation between aerobic fitness and serum cholesterol levels in a large employed population.

BACKGROUND: The purpose of this epidemiologic study was to determine the extent to which aerobic fitness was associated with total cholesterol/HDL-C ratios greater than 5.0 in 10,455 adults. The confounding effects of age, gender, income, body fat, smoking, and alcohol use were also examined. METHODS: A step test was used to estimate aerobic fitness, and serum cholesterol was measured in a certified lab. Lifestyle information was gathered using written questionnaires, and body fat was assessed using skinfold measurements. RESULTS: High fitness levels were associated with low prevalence of elevated total/HDL-C ratios. After controlling for the potential confounders, adults classified as having excellent, very good, good, or fair aerobic fitness levels were .46, .64, .61, and .85 times as likely to have elevated ratios compared to poorly fit adults, respectively. High-level fitness was also related to high HDL-C levels and low total cholesterol levels. DISCUSSION: Cause-and-effect conclusions are not warranted; however, poorly fit adults appear to be at increased risk of elevated levels of serum cholesterol.

Adult↗
PubMedDate not supplied

Relationship between serum cholesterol levels and television viewing in 11,947 employed adults.

PURPOSE: The purpose of this study was to determine the prevalence of hypercholesterolemia among high-, moderate-, and low-duration television viewers. The confounding effects of age, gender, income, body fat percentage, weekly exercise duration, and smoking were also examined. DESIGN: A cross-sectional or correlational design was employed. Cochran-Mantel-Haenszel odds ratios were used to estimate risk of the television viewers regarding hypercholesterolemia. SETTING: Participants were employees of over 55 corporations that had their employees screened as part of the ongoing risk-management program of Health Advancement Services (HAS), Inc. SUBJECTS: Subjects were 11,947 employed adults. About 85% of the subjects eligible for participation completed the screenings and were used in the study. MEASURES: Serum cholesterol was assessed in a certified lab, and lifestyle information, including television viewing habits, was collected via a written questionnaire. Body fat was measured using skinfolds from three body sites. RESULTS: High-duration television viewers were almost two times more likely to suffer from hypercholesterolemia as infrequent viewers, with and without control of multiple confounding factors. Moderate-duration viewers were at 1.5 times the risk of hypercholesterolemia compared to infrequent viewers. Neither television group was at greater risk of moderately elevated cholesterol levels (200-239) compared to the infrequent viewers with all of the potential confounders controlled. CONCLUSIONS: Cause-and-effect conclusions are not warranted; however, this study coupled with other investigations shows that excessive television viewing may be an important lifestyle factor linked to decreased health and functioning.

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