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(Zn) loss from sweat of 9 male and 9 female athletes exercising under (35OC, HE) and neutral (25OC, NE) conditions was examined. Subjects ed at 3% V0,max on a cycle ergometer for 1 hr during each trial.e sweat samples were analyzed for Zn by atomic absorption spectroThere was a significant interaction of time, gender, and temperaole-body sweat rates (WBSR). WBSR for males were higher trials and at each time. WBSR from the second half of exercise re higher than those from the first half for both sexes and temperature nditions. Sweat Zn concentration was higher in the NE than in the HE, the sweat rates were included, the rate of Zn loss was no different HE and NE. Zn concentration of the sweat for the first half of ercise was over twice that of the second half. Sweat Zn concentration of e men was no different than that of the women; however, due to greater rate, men had significantly higher Zn losses. Although total Zn losses timated to be relatively low compared to the RDA, exercise at moderate nsities may increase surface Zn losses.

Mixing undeclared species in meat products is illegal under food labelingregulations. i%is study compared the conventional agar-gel immunodiffusion (AGID) with the Enzyme-Linked Immunosorbent Assay (ELISA) for detecting species adulteration and assessed the species adulteration problem in raw ground pork products in Alabama retail markets. Forty-two ground pork and 87 fresh pork sausage samples collected throughout Alabama were examined by AGID and ELISA for four species: pork, beeJ poultry and sheep. Using ELJSA, 91 % of the ground pork samples were found to contain other meats while 71 % were found to be contaminated using AGID. Using ELISA, 54% of the sausage samples were found to contain undeclared species while none were found to be contaminated using AGID. The major adulterating species in the pork products was beef followed by poultry and sheep. Reliable analytical methods, such as ELISA, must be used as a regulatory tool to discourage the meat species adulteration problem in retail markets. ' To whom inquiries should be directed: TEL: (334)844-2211; FAX (334)844-3268.

The effect of boron supplementation was investigated in 19 male bodybuilders, ages 20–27 years. Ten were given a 2.5-mg boron supplement while 9 were given a placebo every day for 7 weeks. Plasma total and free testosterone, plasma boron, lean body mass, and strength measurements were determined on Days 1 and 49 of the study. Plasma boron values were significantly (p<0.05) different as the experimental group increased from (±SD) 20.1 ±7.7 ppb pretest to 32.6 ±27.6 ppb posttest, while the control group mean decreased from 15.1 ±14.4 ppb pretest to 6.3 ±5.5 ppb posttest. Analysis of variance indicated no significant effect of boron supplementation on any of the dependent variables. Both groups demonstrated significant increases in total testosterone, lean body mass, 1-RM squat, and 1-RM bench press. The findings suggest that 7 weeks of bodybuilding can increase total testosterone, lean body mass, and strength in lesser trained bodybuilders, and that boron supplementation had no effect on these measures.