|SGA ||Subjective global assessment (SGA) is a validated method of nutritional assessment based on the features of a medical history (weight change, dietary intake change, gastrointestinal symptoms that have persisted for more than 2 weeks, changes in functional capacity) and physical examination (loss of subcutaneous fat, muscle wasting, ankle/sacral oedema and ascites).|
|Stable Isotope Tracers||Stable isotope tracers provide a safe and powerful tool to investigate carbohydrate, fat, and protein metabolism, especially to asses substrate fluxes in vivo in humans. Isotopes are elements which share the same place in the periodic table. As such, they have the same number of protons, but differ in their atomic mass, which enables us to trace them by mass spectrometry.|
|SF36||The Short Form (36) Health Survey is a 36-item, patient-reported survey of patient health. The SF-36 is a measure of health status.|
|Skinfolds||The skinfold measurement test is used to determine a person's body composition and body fat percentage.
This test estimates the percentage of body fat by measuring skinfold thickness at specific locations on the body.|
|SNAQ||Short Nutritional Assessment Questionnaire (SNAQ) are short screening tools that can be used by untrained personnel for early detection and treatment of malnourished patients.|
||The Sexual Function Questionnaire (SFQ) is a self-report outcome measure sexual function. It has recently been modified to create a 28-item version (SFQ28) including the addition of a new arousal-cognitive domain.|
|Substrate turnover||Turnover number (also termed k<sub>cat</sub>) is defined as the maximum number of molecules of substrate that an enzyme can convert to product per catalytic site per unit of time (a turnover rate).