The ability of d-fenfluramine, a drug that releases brain serotonin and blocks its reuptake, to relieve premenstrual depression and excessive calorie and carbohydrate intakes was examined in 17 women with premenstrual syndrome. Subjects received d-fenfluramine (15 mg twice daily) or placebo, in random order, during the luteal phases of six menstrual cycles; ie, for three control and three treat...

PURPOSE The purpose of the study was to compare affective responses for two bouts of cycle ergometry with differing duration and intensity, but equal total work in kilocalories. METHODS Thirty-seven participants (20 male, 17 female, mean age 23.9 yr) completed a multistage cycle ergometer protocol to determine ventilatory threshold (VT) and peak oxygen consumption (mean = 34.9 mL.kg(-1).min(-...

OBJECTIVE To examine and compare the relationships among diet, physical activity, and adiposity between home-schooled children (HSC) and traditionally schooled children (TSC). DESIGN AND METHODS Subjects were HSC (n = 47) and TSC (n = 48) aged 7-12 years old. Dietary intakes were determined via two 24-h recalls and physical activity was assessed with 7 days of accelerometry. Fat mass (FM), tr...

Humans and other primates are distinct among placental mammals in having exceptionally slow rates of growth, reproduction, and aging. Primates' slow life history schedules are generally thought to reflect an evolved strategy of allocating energy away from growth and reproduction and toward somatic investment, particularly to the development and maintenance of large brains. Here we examine an al...

BACKGROUND Increasing prevalence of obesity and lifestyle related chronic disease is fundamentally tied to Americans' poor eating habits. Family environment, including the presence of children, may affect adults' diet behavior. OBJECTIVE To compare dietary fat intake between adults with and without minor children in the home. DESIGN Secondary analysis of cross-sectional survey data from the...

BACKGROUND Little is known about the physical activity patterns among US adults who have asthma. METHODS Using data for 165,123 respondents of the 2000 Behavioral Risk Factor Surveillance System, we examined leisure-time physical activity. RESULTS After adjusting for age, about 30% of participants with current asthma (12,489 participants), 24% with former asthma (4,892 participants), and 27...

Removal of the lower epidermis from a tobacco leaf allows a faster and wider range of water fluxes, without damaging the mesophyll. It also permits a more direct examination of the photosynthetic potential of the tissue at various levels of hydration.The rehydration rate of leaf discs is essentially linear. It decreases with leaf age and is correlated with the rate of dehydration, but it is ind...

BACKGROUND Our purpose was to determine the relationship between energy intake, energy availability, dietary fat and lower extremity injury in adult female runners. We hypothesized that runners who develop overuse running-related injuries have lower energy intakes, lower energy availability and lower fat intake compared to non-injured runners. METHODS Eighty-six female subjects, running a min...

Interest in risk factors for the recurrence of adenomatous polyps derives from the use of recurrent adenomas as surrogate end points in longitudinal studies of invasive colorectal cancer. In this case-control study, the effect of increased body mass index (BMI) on the risk of recurrent adenomas was investigated. Subjects consisted of patients seen at three colonoscopy practices in New York City...

Since body fatness is a convincing risk factor for endometrial cancer, dietary fat intake was speculated to be associated with endometrial cancer risk. However, epidemiological studies are inconclusive. We aimed to conduct a meta-analysis to assess the associations between dietary fat intake and endometrial cancer risk. We searched the PubMed, Embase, and Web of science databases updated to Sep...