Fitness Dictionary
by Justin French








Lateral – Refers to the side of the body.

Lats - Abbreviation for latissimus dorsi, the large muscles of the back that move the arms downward, backward and in internal rotation.

LDL - This stands for “low-density lipoprotein" and is a subcategory of cholesterol, typically thought of as the "bad" cholesterol. Levels of LDL cholesterol can be elevated by ingestion of saturated fats and a lack of exercise.

Lean Body Mass - Everything in the body except fat, including bone, organs, skin, nails and all body tissue including muscle. Approximately 50-60% of lean body mass is water.

Lift Off - Assistance in getting weight to proper starting position.

Ligament - Strong, fibrous band of connecting tissue connecting 2 or more bones or cartilages or supporting a muscle, fascia or organ.

Linoleic acid - An essential fatty acid and, more specifically, an omega-6 polyunsaturated fatty acid. Good sources of this fatty acid are safflower oil and soybean oil.

Linolenic acid - An essential fatty acid and, more specifically, an omega-3 poly-unsaturated fatty acid. It is found in high concentrations in flaxseed oil.

Lock Out - Partial repetition of an exercise by pushing the weight through only last few inches of movement.

Lower Abs - Abbreviation for abdominal muscles below the navel.


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