STS (the sit-to-stand) test
2.the test:
To do the test, simply sit in the middle of the chair, cross your arms and place both of your hands on opposing shoulders. Keep your back straight with your feet on the floor. Then press your stopwatch's start button and rise to a full standing position before sitting down again. Repeat this for 30 seconds, counting how many times you can come to a full standing position.

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