The sample size was calculated in relation to the Glittre Activities of Daily Living test24 as the main outcome and was based on results obtained from a pilot study with five participants in each group. An effect size of 1.3 was estimated from a mean time of 213 seconds to perform the Glittre Activities of Daily Living test in the control group and 153 seconds for the experimental group, with a SD within each group of 45 seconds. Unequal treatment allocation (2:1) was assumed due to ethical reasons for maximising participants’ exposure to the experimental group. Assuming an a error of 0.05, a b error of 0.20 and an allocation ratio of 2:1, the sample size was determined to be 24 participants in the intervention group and 12 in the control group.