Chair rise is a mechanics problem
The centre of mass must move forward and upward. Seat height and foot position influence how much joint moment is required.
Why arms help
The upper limbs can contribute external force and reduce the mechanical demand placed on the hips and knees.
A strategy, not a diagnosis
Using the arms may be a sensible adaptation. Its significance depends on whether it is new, progressive or associated with other changes.
Established evidenceFactual statements are grounded in the publications listed below.
KŌMØ perspectiveKŌMØ favours a multidimensional, longitudinal reading of mobility.
LimitsThis page is educational and does not replace medical assessment when a change is recent, marked or accompanied by other symptoms.
References
- Janssen WGM, et al. Determinants of the sit-to-stand movement: a review. Phys Ther. 2002.
- van der Kruk E, et al. Compensation due to age-related decline in sit-to-stand and sit-to-walk: a systematic review. J Biomech. 2021.
- Sadeh S, et al. Biomechanical and neuromuscular control characteristics of sit-to-stand transfer in young and older adults: a systematic review. Clin Biomech. 2023.