Influence of short bouts of stair climbing on young adults during prolonged sitting on posture, discomfort, and musculoskeletal performance outcomes: a counterbalanced pilot randomised crossover trial.

Prolonged sitting is postulated to influence musculoskeletal performance (cervical flexor endurance, balance, and agility), discomfort and alter cervical spine angles during work-based computer use. Stair climbing breaks may be a great addition at typical and home offices however remain unexplored for its impact on musculoskeletal performance. In our counterbalanced pilot crossover trial, 24 adults were randomised to three interventions: (1) prolonged sitting, (2) interrupted by 2 min of self-paced, and (3) externally paced stair climbing for 2 h. Cervical spine angles were measured every 30 min while balance, agility, endurance, and discomfort were assessed before and after 120 min. Stair climbing interruptions have favourable effects on agility (F = 8.12, p = 0.009, η_p² = 0.26) and musculoskeletal discomfort, but failed to improve other musculoskeletal outcomes associated with prolonged sitting. Brief stair climbing interruptions are effective in improving discomfort and agility while pragmatic trials are warranted for translated effects. Practitioner summary: Stair climbing interventions are known for their cardiovascular benefits, however their impact on musculoskeletal performance remains unclear. In our randomised crossover pilot study, we explored the effects of stair climbing interruptions on cervical posture, endurance, agility, and balance during 120 min of prolonged sitting. Stair climbing interruptions were favourable in reducing time to complete agility tasks and neck/shoulder discomfort score compared to prolonged sitting. However other performance measures remained unaltered. [ABSTRACT FROM AUTHOR]