Twelve matched pairs of subjects, fed a high protein diet, were trained with weights for 6 weeks. In the final 3 weeks twelve subjects received 5 milligrams of methandrostenolone (Dianabol) twice daily. Maximum weight lifting, thickness of skin folds, oxygen uptake, blood chemistry profile, and concentration of blood lipids were determined. Also used were cable tensiometry and anthropometric measurements. The strength of treated subjects increased significantly; their mean weight gain was 2.48 kilograms with no significant change in skin fold thickness. Several anthropometric measurements increased significantly, as did oxygen uptake ability and nitrogen retention by the blood.
approved: Dr. Richard Irvin The purpose of this study was to examine the relative effectiveness of functional isometric squats on the development of dynamic strength, static strength and power of college males. Ten college males volunteered for the study.The subjects trained two days per week for a total of eight weeks which consisted of a two week preconditioning period followed by a six week functional isometric squat training period. The test data were statistically treated using a paired t-test and one-way analysis of covariance.The .05 level of significan e was selected for accepting or rejecting the null hypothe es.The results of the imposed training program revealed a significant increase in dynamic strength. There were no significant increases in power between groups; however, a significant increase in power was found within the functional isometric and dynamic squat training groups. The results of this study have several implications towards strength training of athletes and students enrolled in a physical education weight training activity class.
This blinded cross-sectional study was to determine whether chronic cocaine exposure in utero produces abnormalities in left ventricular function (shortening fraction), heart rate, rhythm, and conduction in term neonates. Three groups of neonates were evaluated by two-dimensional echo Doppler and 24 hour Holter monitor, with studies initiated in the first 24 hours of life. Group A (n = 32) neonates had a positive history of chronic maternal cocaine use in pregnancy (MCU+) and a positive neonatal urine cocaine test (NUC+). Group B (n = 23) neonates were MCU+ but NUC-. Group C (n = 32) neonates were MCU- and NUC-. Measured parameters were compared statistically by analysis of variance. p < 0.05 was regarded as significant. Echocardiography showed no significant difference between groups A, B, and C for left ventricular shortening fraction. Holter monitor likewise revealed no significant difference between groups in minimal, maximal, and average heart rate, or in the incidence of supraventricular and ventricular arrhythmias greater than 20 beats/h in the 24-hour period. None of the patients had atrioventricular or bundle branch block. It is possible that the developmental state of the newborn heart makes it less responsive to the adverse effects of cocaine.
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