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Biomedical subjects

J Nutter

Publications and source records attributed to J Nutter.

8 recordsLinked to original sources
PubMed1991

Seasonal changes in female athletes' diets.

Dietary intakes of 24 female athletes in various sports were compared inseason and postseason to those reported by 24 nonathletes during the same time period. Diets were analyzed for energy, carbohydrate, fat, protein, vitamins A and C, thiamin, riboflavin, niacin, folacin, calcium, and iron. During the study, the athletes' and nonathletes' diets were similar. Their energy intakes were lower than recommended while their iron and calcium intakes were marginal (less than 70% of the recommended dietary allowance). Although few dietary changes were observed, the nonathletes' diets changed more than those of the athletes during the study. Both groups reduced their energy intakes but only the nonathletes' reduction was significant. Initially many subjects were dieting. More subjects reported dieting during the second recording period. These results suggest that the desire to be thin may influence dietary intakes of female athletes more than changes in exercise training.

Adolescent↗
PubMed1991

Relationship of selected body composition and training variables to 17 B-estradiol in eumenorrheic runners.

Although the relationships among body composition, training, and physical characteristics and 17 B-estradiol (estradiol) have been described in active amenorrheic women, little is known about these relationships in eumenorrheic women. This study examined the relationship between selected body composition and training variables, physical characteristics, maximal oxygen consumption (VO2max), luteinizing hormone (LH) and estradiol in eumenorrheic runners. Fifteen women (25.8 +/- 0.8 years) running 19.8 +/- 1.8 miles per week were studied during the midluteal phase of the menstrual cycle. Estradiol and LH were determined by radioimmunoassay. Body composition was measured by hydrostatic weighing. Age, Ponderal Index, and menstrual cycle length (days) were inversely related to estradiol (r = -0.56, r = -0.55, r = -0.52, respectively, p less than 0.05). A significant relationship (R2 = 0.91; p less than 0.05) was found among age, menstrual cycle length, LH (mIU/ml), VO2max (ml/kg/min), weight training (hr/wk), miles run per week, height (cm), additional aerobic training (hr/wk), relative body fat (%), and Ponderal Index and estradiol (pg/ml). These data suggest the midluteal concentration of estradiol in moderately trained eumenorrheic runners is the result of a complex interaction of many factors.

Adult↗
PubMedDate not supplied

Aggressive epithelioid hemangioendothelioma of the lower extremity: a case report and review of the literature.

A case of epithelioid hemangioendothelioma (EHE) of the left lower extremity in a 50-year-old male is discussed. The neoplasm presented as a tan-purple, painful mass involving the fourth digit of the left foot. Following an excisional biopsy and partial amputation of the fourth digit, the lesion recurred with a multifocal distribution. A physical exam following the recurrence demonstrated multiple palpable lymph nodes in the left inguinal region. A complete amputation of the fourth digit was performed in conjunction with local excisions of the remaining lesions. Additionally, an inguinal lymphadenectomy was performed for staging purposes. Histologically, the tumor was predominantly composed of epithelioid endothelial cells forming nests, cords, and sheets and occasionally forming irregular, primitive vascular structures. Less commonly, nests of tumor cells assumed a spindled morphology. Patches of necrosis and hemorrhage were apparent throughout the neoplasm. There was minimal atypia and mitoses were not identified. Immunohistochemical stains for CD34, CD31, and Ulex europaeus antigens were positive in tumor cells. This case illustrates the potential aggressive behavior of this rare neoplasm and argues against the designation "tumor of low-grade malignancy" with which it is commonly attributed.

Foot Diseases↗