Postural Control in Older Adults During and Following a 12-Week Balance Training Intervention With Attentional Focus Instructions

Adults (N= 54, 80.78 +/- 6.08 years) who reported falling during the previous 12 months participated in a 12-week wobble board training program with internal focus or external focus (EF) instructions. Verbal manipulation checks were performed after training sessions as a self-report of the attentional foci used. The percentage of sessions in which participants reported using an EF (EFSR) was subsequently calculated. Mean velocity and mean power frequency in the anterior-posterior (MVELOAP and MPFAP) and medial-lateral (MVELOML and MPFML) direction were assessed during a 35-s wobble board task at Weeks 0, 6, 12, 13, 16, and 20, with the latter three as retention tests. Piecewise linear growth models estimated treatment effects on individual growth trajectories of MVELOAP (and ML) and MPFAP (and ML) during intervention and retention periods. Regardless of condition, MVELOML significantly decreased (pi = -.0019, p= .005) and MPFML increased (pi= .015, p < .02) during the intervention period. In analyses including interaction terms, participants in the EF group who reported greater EFSR had superior progression of MPFAP during the intervention (pi = .0013, p = .025). Verbal manipulation checks suggest a preference for and advantage of EF for facilitating postural control performance and automaticity.