Date of Award


Document Type


Degree Name

Doctor of Philosophy (PhD)


The purposes of this investigation were to: (a) examine strength and anaerobic power gains as well as selected local muscle endurance, maximum work output, and body composition adaptations resulting from short term training with traditional methods versus a theoretical model; (b) to provide a synergistic overview from a specifically constructed series of studies, each designed in a logical progression; and (c) to pool holdings of like data to generate a scaling procedure used to predict high and low gainers of power from initial measures. Seven training studies utilized a total of 298 male and 45 female subjects divided into experimental and control groups. Training protocols consisted of free weight training 3 to 4 days per week, ranging from 6 to 12 weeks duration. Power was determined from a vertical jump procedure and the Lewis formula. Strength measures were taken from 1 RM parallel squat, bench press, and power clean. Local muscle endurance was measured from repetitions with 80% of 1 RM squat. In addition, ability to reproduce a ballistic task after fatigue was measured by a maximum leg ergometer ride and decrement of pre-post vertical jump. A progressive maximum leg ergometer ride to voluntary termination was used to measure maximum work output. Finally, body composition was appraised by both hydrostatic weighing and skin fold techniques. The data for all variables were analyzed using a group by test ANOVA followed by contrast statements or Duncan's multiple range for specific test differences. Discriminant analysis was used in one experiment to identify group differences and provide a scaling model with functions that maximized group differences. Training on the theoretical model generally produced greater increases in leg and hip strength and in power than the traditional method. Discriminant analysis procedures indicated that subjects who had the least initial lean body weight and were trained by the theoretical model gained the most power.