Ak…Å¸ehir for used the TPB to examine children’s physical activity intentions and behaviour and found that attitudes, perceived behavioural control and intention were significant influences on exercise behaviour at a one-week follow-up. Perceived behavioural control and attitude both predicted intention, whereas, surprisingly, subjective norm did not. This is in contrast to an earlier study by Godin and Shephard in exactly the same age group, where subjective norm was predictive. However, various differences exist between the two studies, including for example the fact that Godin’s sample was American, where the benefits of exercise ? or the risks of obesity ? have possibly become more known over the past twenty-five years, hypothetically strengthening the role of personal attitudes and beliefs over social norms. The TPB has also been used to study physical activity intentions and behaviour among individuals with chronic diseases. For example, Eng and Martin-Ginis evaluated whether TPB variables explained the actual leisure time physical activity LPTA of men and women with chronic kidney disease reassessed one week after their TPB beliefs were assessed. Perceived behavioural control was initially associated with intention to engage in LPTA, and this intention predicted actual behaviour a week later. Ak…Å¸ehir 2016.