The relationship between 2D:4D ratio and respiratory function in young, healthy adults

Abstract

The aim of this study was to establish a link between the ratio of the lengths of the second and fourth digits of an individual's dominant hand and Lung function in young healthy adults. A total of 43 university students were recruited to this study from Queen Margaret University, for each participant the index and ring fingers were measured, height was taken and Pulmonary Function Tests (PFTs) were measured using a vitalograph. Data was then analysed using a Pearson's correlation test which found poor correlations in original sample between Digit ratio and lung function tests (r= 0.141 (P > 0.05)). Height (cm) showed very strong correlations towards Lung function tests (e.g. Males r= 0.509 (P . 0.05). Paired T-tests revealed trends in the data samples, these trends showed males presented less significant differences between their predicted lung function values and their actual measured values, in addition, individuals who had a high level of exercise as part of their lifestyle also showed less difference in their results. Findings from this study indicate some correlation between digit ratio and lung function however these correlations are not statistically significant due to the multitude of factors that affect this relationship. The results revealed that increased exercise improved lung function.