• Muscular strength is the ability of a muscle to exert maximum force against resistance. This is usually determined by the maximal amount of resistance. – one repetition maximum or 1 RM.
• 1 RM is the maximum amount of resistance an individual is able to lift in a single effort. A true 1 RM might be difficult to obtain the first time an individual is tested, because fatigue becomes a factor.
• Resistance – amount of weight that is lifted.
• Sets – a fixed number of repetitions. One set of bench presses might be 10 repetitions. A person generally need 3 minutes of rest between sets.
• Circuit training – alternating two or three exercises that require different muscle groups. For example, the bench press, leg extension, and abdominal curls may be combined so the person can go almost directly form one set to another.
From: Hoegar& Hoegar, Principles and Labs for Physical Fitness, fifth edition, 2006