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Muscular Strength and Endurance. Three basic principles physical activity. Overload Stimulating the muscle/making it work harder than normal in order to improve fitness Progression The workload must be progressively increased for movement/muscle increase to occur Specificity
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Three basic principles physical activity • Overload • Stimulating the muscle/making it work harder than normal in order to improve fitness • Progression • The workload must be progressively increased for movement/muscle increase to occur • Specificity • Must do specific types of exercises to improve specific components of fitness he/she wants to improve
Difference • Muscular Strength • Amount of force a muscle can exert in a single effort • Muscular Endurance • The ability to repeat muscle movement over a period of time
Muscle Fibers • DEF- muscle cells which are long and cylinder-shape • *with regular weight training can increase in size but NOT in number* • Types • Slow-twitch- muscle fibers that contract at a slow rate, but have great endurance • Intermediate- combination of fast and slow • Fast- contract at a fast rate, have great strength, but little endurance
Different types of strength exercises • Isotonic • Muscles contract (lengthen/shorten) while lowering and raising a resistance • Isometric • Muscles contract, but they do not move • Isokinetic • Providing maximal resistance throughout a complete range of motion at a constant speed
