The effects of high- and moderate-resistance training on muscle function in the elderly

The purpose of this study was to investigate the effects of a 12-week resistance-training program on muscle strength and mass in older adults. Thirty-three inactive participants (60-74 years old) were assigned to 1 of 3 groups: high-resistance training (HT), moderate-resistance training (MT), and control. After the training period, both HT and MT significantly increased 1-RM body strength, the peak torque of knee extensors and flexors, and the midthigh cross-sectional area of the total muscle. In addition, both HT and MT significantly decreased the abdominal circumference. HT was more effective in increasing 1-RM strength, muscle mass, and peak knee-flexor torque than was MT. These data suggest that muscle strength and mass can be improved in the elderly with both high- and moderate-intensity resistance training, but high-resistance training can lead to greater strength gains and hypertrophy than can moderate-resistance training.     

Dynamic booking rules for flights with an intermediate stop

A feasible model has been developed to find the optimal decision rule for allocating seats to passengers seeking to fly on the long or short span of a flight with an intermediate stop from which no boarding rights exist to take passengers to the terminal stop. The model is feasible from the point of view of estimating the data and of computer calculation and memory capacity and is implementable under real life conditions. A computer program was written and a short sample problem was calculated to show the differences in computation time and memory requirements vs the loss of revenue in comparison with a complicated and thus unfeasible higher order model.