🧭 Chair stand tests – Simple tools… but not interchangeable

Sit-to-stand tests are among the most widely used functional assessment tools in physiotherapy. Easy to implement—requiring only a chair, a stopwatch, and standardized instructions—they may seem interchangeable at first glance.
In reality, they encompass a very heterogeneous family of tests, each with distinct clinical objectives, physiological determinants, and fields of application.

Since the initial work of Csuka and McCarty (1985), numerous variations have been described: 5x Sit-to-Stand, 30 seconds, 1 minute, 3 minutes, timed or untimed versions, or even unipedal. All are validated in the literature, but not for the same uses or the same populations.

Short tests (≤ 30 seconds) primarily provide information on overall performance, combining functional strength, coordination, dynamic balance, and execution speed. They are influenced by numerous factors (morphology, motor strategy, instructions), which limits their interpretation as an analytical measure of strength.

From one minute onwards, the dimension changes: prolonged chair stand tests exhibit a significant cardiorespiratory component, with responses similar to those observed in the 6-minute walk test (6MWT). They therefore constitute a relevant alternative, particularly in exercise rehabilitation and respiratory physiotherapy, including in clinics or at home.

Finally, the Single-Leg Sit-to-Stand occupies a special place, particularly useful for exploring asymmetry, unilateral weakness or quadriceps endurance, especially in musculoskeletal, neurological pathology or in a return-to-sport context.

👉 When used correctly, chair stand tests are powerful clinical tools. When poorly chosen, they can lead to misinterpretations. The real challenge, therefore, lies in selecting the right test, for the right patient, at the right time.