Randomization
Participants were evenly and randomly assigned to the experimental and control groups. A statistician (not a member of the research team) performed a masked centralized and randomized method with allocation concealment in which the participants and research team members (except the physiotherapists involved in the intervention) were unaware of the assignment. The randomization sequence was created with R Software (version 2.11) and segregated by gender, age (60–75 years), and BMI. To keep an even number of participants in each group, block sizes were varied at random between four and eight. Furthermore, the participants in the control group received their exercise on different days than the participants in the experimental group.