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You are here: Home HPRC Blog Get FITT to optimize muscle strength

Get FITT to optimize muscle strength

published: 07-08-2011 Journal entry icon

Muscle strength is an essential component for successful Warfighter performance. Developing optimal muscle strength and endurance maximizes job performance and reduces risk of injury. The FITT principle can help you achieve this goal. FITT refers to “frequency, intensity, time (or duration), and type” of activity.

  • Frequency is the number of sessions in a week that an individual trains. At least two days per week of strength training is recommended.
  • Intensity, considered the most important aspect of strength and endurance conditioning, is defined by the amount of weight used per repetition. For muscle endurance, training should involve 20-60 repetitions of 30% to 50% of one repetition max (1RM; the maximum amount of weight one can lift for one repetition) per set. For muscle strength, training should involve 1-12 repetitions of 65% to 90% of 1RM per set.
  • Time of sessions should range from 30 to 60 minutes.
  • Type of exercise should vary in strength and conditioning routines to prevent boredom and improve gains. A combination of free weights and machines is recommended.

For more detailed information on strength training, read Chapter 6, Strength Training, of The Navy SEAL Physical Fitness Guide.