Replication Data for: Effects of a 12-week intrinsic foot muscle strengthening training (STIFF) on gait, balance and fear of falling in physically active older adults: an assessor-blinded randomized-controlled trial

The data are obtained within an RCT study. The primary aim of the present study was to examine the effect of a plantar intrinsic foot muscle strengthening training versus no training on maximum gait speed in older adults who are involved in a functional exercise program. To investigate the trainability of the intrinsic foot muscles and how this translates into improved mobility , the secondary aim was to examine the effect of the training on foot and ankle biomechanics during gait, comfortable gait speed, step length, balance during gait, intrinsic foot muscle capacity, isometric toe flexor strength, self-reported mobility impairments, physical activity, fall incidents, concerns about falling and physical functioning. The collected data consist of baseline characteristics and data collected before and after the 12 week foot muscle strengthening training.