
Purpose. Trains the exact task that determines much of everyday independence: Rising from a seat. It loads the hip and knee extensors through a functional range and is a core component of established falls-prevention programmes.
How it fits the system. A foundation exercise in the Otago Exercise Programme, where it appears as a progressive strength and balance task. It also forms the basis of common clinical measures of lower-limb function in older adults.
Quadriceps, Gluteus Maximus
Hamstrings, Erector Spinae, Gastrocnemius, Soleus
Squat, Sit-to-Stand
Chair
Beginner
The movement is progressed by changing how much help is used rather than by adding external weight. The usual sequence is standing with both hands pushing off the chair, then one hand, then no hands, then with the arms folded across the chest.
Chair height changes difficulty considerably. A higher seat reduces the range and the demand; a lower seat increases both. Starting from a firm, stable chair without wheels is important for safety.
Leaning the trunk forward so the shoulders travel over the feet is what makes standing possible without hand support. Many people struggle not because of weakness but because they try to stand with the trunk upright, which leaves the centre of mass behind the feet.
Lowering back down should be controlled rather than a drop into the seat. The controlled descent is the eccentric portion and contributes meaningfully to the training effect.
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