At present, doctors are not consistent in the way they set the QTc interval in the recovery phase. The main goal of this study was to screen healthy subjects in the two different exercise stress tests and to compare the obtained data from both tests. We wanted to explore whether the heart rate and the QTc interval differs from each other when performed in two different body positions during the recovery phase. The main purpose was to present evidence that would prove or disprove a hypothesis that the figures differ in the different body positions. In the theoretical part we submitted the main information about the heart rate, the QT interval and the relationship between them. We compared the behaviour of the obtained data during the exercise and during the recovery phase. We described the causes of the QTc prolongation and how it is related to the cardiac arrhythmias. In the practical part we examined 20 healthy subjects. Each of them underwent two exercise stress tests on the bicycle ergometer, up to the subjective maximum level of the exercise intensity. The subjects then recovered in two different positions. The first one was a supine position. The second rest position was on the bicycle ergometer set to very low intensity. We found out that the 4-minute recovery phase, the most important for...

Finding the optimal capital structure has been a relevant subject for many decades. Therehas for a long time been a discrepancy between observed leverage ratio and those proposedby theory, with many different theories suggested and developed throughout time. One ofthose theories is the Contingent Claims Analysis (CCA). Based initially on Black & Scholes’option-pricing theory and formulas, and pioneered by Merton, the CCA-methodology hasthroughout the years been developed further and moved from pricing liabilities todetermining capital structures. The research and development on CCA-models have for thepast years mostly been on a theoretical level and less about its practical applicability. Thosefew applications that have been made were based on the U.S. market and companies.Ju and Ou-Yang developed one of the most recent CCA-methodologies in 2006,abbreviated as the JOY-model in this study. What distinguishes this model is its ability toshow the non-monotone relation of debt maturity and debt face amount through the morecomplex tradeoffs between tax benefits, bankruptcy costs and transactions cost. With a fewchanges made to it, and with almost all data from the Swedish market and companies, theJOY-model yields higher leverage ratios than what the 5 analyzed companies have today.The optimal leverage ratio, defined as debt value/firm value ranges from 10 – 40% and theoptimal debt maturity period is at 4 – 6 years. Out of all the model parameters, the long-runmean of the stochastic risk-free interest rate has the biggest impact on the final results. TheJOY-model and CCA in general are complex and resource intense models that need certainimprovements. Nonetheless, its overall potential is still promising.