The 1-minute sit-to-stand test (1MSTS) is a widely used functional capacity test and has promising predictive potential. Current standards of practice suggest the use of a chair with a standardized height. However, this practice makes the test more demanding for taller individuals than for shorter individuals. This implies over- or underestimation of functional capacity depending on body morphology.

Therefore, the aim of this study is to investigate the influence of knee joint angle, femur length and bodyweight on the 1MSTS performance in healthy subjects with different morphology.

This is a randomized cross-over trial with the participants performing both procedures twice in one visit. Sufficient breaks in between the tests is granted.

Inclusion Criteria:

• Informed consent as documented by signature
• Age 18 and older
• Healthy
• Ability to conduct a 1-minute sit-to-stand-test
• Ability to follow study procedures and instructions in German

Exclusion Criteria:

• Known cardiopulmonary or metabolic diseases (e.g., heart disease, diabetes mellitus etc.)
• Smoking (ex-smoker allowed; if they stopped smoking at least one year before the study inclusion)
• Physical or intellectual impairment precluding informed consent or protocol adherence
• Respiratory infection in the last two weeks
• Pain during sit-to-stand movement

Healthy individuals

On reasonable request