Student Health Services - The University of Iowa

Fitness - Physical Activity Guidelines for Good Health

Thirty minutes of moderate physical activity on most days of the week (5-7). Any and all physical activity is beneficial. For maximal health benefits, make physical activity a part of your life.


Physical Activity for Fitness - The FITT Method

Frequency: 3-5 days per week

Intensity: The two most common methods for monitoring intensity are heart rate (HR) and rating of perceived exertion (RPE).

  1. 60-85% Heart Rate Reserve
    Training Heart Rate = (HRmax - RHR) x % + RHR
    HRmax = 220 - age
    RHR = Resting Heart Rate
    % = .6 - .85 (60-85%)
  2. RPE - Rating of Perceived Exertion
    Should feel like you are working "moderately hard" or "hard" but not so hard that you have to stop.

Time: 20 - 60 minutes of continuous activity. OK to break sessions down (2 x 15 minutes).

Type: Activities that are rhythmic and use large muscle groups: walking, jogging, swimming, biking, rowing, aerobic dance, and cross-country skiing are examples.


Resistance Training for Muscular Strength and Endurance

Frequency: 2-3 days per week with at least 48 hours in-between training days

Intensity: 1 Set of 8-12 Repetitions

Weight: 70-80% max or amount one can lift for 8-12 reps

Time: Long enough to exercise 8-10 different muscle groups

Type: 8 - 10 different exercises working all major muscle groups of the body. Free weights or machines will produce similar improvements in strength and endurance.


Improving Flexibility

Frequency: 3-5 days per week

Intensity: Static stretching. Reach to the point of tension and hold.

Time: Each stretch should be held for 10 - 30 seconds and then repeated 3-5 times.

Type: Stretching major muscle groups is important, especially the hamstrings and low-back.

Page updated: 3/27/08