STS (the sit-to-stand) test
6. Fitness test
For younger people or those with no health conditions, this test is a good measure of fitness, particularly lower body muscular strength and endurance. The average score for 20–24-year-olds is 50/minute for men and 47/minute for women. Some of those taking part, however, were able to perform as many as 72 repetitions in a minute.
Jasmin Fox-Skelly BBC7/04/2025 (Sit-to-stand: The simple test that reveals how you're ageing)