GLOSSARY

Carnitine Supplementation refers to carnitine or its supplementation, related to long-chain fatty-acid transport without automatically causing fat loss.

Carnitine participates in transporting long-chain fatty-acid groups into mitochondria for oxidation. Supplying oral carnitine does not automatically increase muscle carnitine or cause body-fat loss, because uptake and the broader energy balance matter. Carnitine forms, co-ingestion strategies and study populations differ. A metabolic role should be separated from evidence for a particular supplement outcome. Increased fat oxidation, reduced soreness and improved performance are different claims, each needing relevant evidence rather than being inferred from the transport pathway alone.

Fat contributes to exercise energy through circulating fatty acids and intramuscular lipid stores. Greater fat availability, uptake or mobilization does not automatically mean a greater oxidation rate. Relative contribution and absolute rate are also different: the percentage can rise while total exercise demand changes. Oxidizing more fat during one session does not by itself establish greater long-term body-fat loss. Interpret the measured process, exercise intensity, diet and overall energy balance together.

Over a defined interval, a difference between metabolizable energy intake and energy expenditure changes stored body energy. This principle does not imply that daily scale weight directly reveals energy balance. Water, glycogen and gut contents also contribute to body mass. Intake and expenditure influence each other through behavior and physiology, so projecting the same daily deficit indefinitely creates unrealistic predictions. Interpret the energy equation together with its timescale and the composition of the tissues changing.