ACSM Exercise Recommendations for Healthy Adults (1998)

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The ACSM 1998 position-stand table — one row for developing cardiorespiratory endurance and body composition (mode/frequency/intensity/duration), one row for muscular strength/endurance, flexibility, and body composition (resistance + flexibility training).

Detail

Exercise Recommendations for Healthy Adults

Exercise to Develop and Maintain Cardiorespiratory Endurance and Body Composition

Variable	Recommendation
Mode of activity	Any activity that uses large-muscle groups, can be maintained continuously, is rhythmic and aerobic in nature; for example, walking-hiking, running-jogging, cycling-bicycling, cross-country skiing, aerobic dance and other forms of group exercise, rope skipping, rowing, stair climbing, swimming, skating, and endurance game activities.
Frequency of training	3–5 days per week.
Intensity of training	55/65–90% of maximum heart rate or 40/50–85% of maximum oxygen uptake reserve.* The lower intensity values (55–65% of maximum heart rate and 40–50% of maximum oxygen uptake reserve) are most applicable to individuals who are quite unfit. For average individuals, intensities of 70–85% of maximum heart rate are appropriate (Max HR = 220 − Age).
Duration of training	20–60 total minutes of continuous or intermittent (in sessions lasting 10 or more minutes) aerobic activity. Duration is dependent on the intensity of activity; thus, lower-intensity activity should be conducted over a longer period of time (30 minutes or more). Lower-to-moderate-intensity activity of longer duration is recommended for the nonathletic adult.

Exercise to Develop and Maintain Muscular Strength and Endurance, Flexibility, and Body Composition

Variable	Recommendation
Resistance training	One set of 8–10 exercises that condition the major muscle groups should be performed 2–3 days per week. Most people should complete 8–12 repetitions of each exercise; for older and more frail people (approximately 50–60 years of age and above), 10–15 repetitions with a lighter weight may be more appropriate. Multiple-set regimens may provide greater benefits if time allows.
Flexibility training	Stretches for the major muscle groups should be performed a minimum of 2–3 days per week; at least 4 repetitions, held for 10–30 seconds, should be completed.

A handwritten note on the source page accompanies this table: "beginner must be between 220 bpm – 192 bpm." (Carried forward as-is; see beginner-hr-note.)

Key facts

Cardiorespiratory mode: large-muscle, continuous, rhythmic, aerobic (walking, running, cycling, XC skiing, aerobic dance/group exercise, rope skipping, rowing, stair climbing, swimming, skating, endurance games).
Frequency: 3–5 days/week.
Intensity: 55/65–90% of max HR OR 40/50–85% of max oxygen uptake reserve; unfit → 55–65% HR / 40–50% VO2 reserve; average → 70–85% of max HR. Max HR = 220 − Age.
Duration: 20–60 total minutes, continuous or intermittent (bouts ≥10 min); lower intensity → ≥30 min.
Resistance: 1 set of 8–10 exercises, major muscle groups, 2–3 days/week, 8–12 reps (older/frail 50–60+: 10–15 reps, lighter weight); multiple sets if time allows.
Flexibility: major muscle groups, ≥2–3 days/week, ≥4 reps, held 10–30 seconds.

Connections

cardiorespiratory-guidelines — the Peterson & Bryant (1995) five-part version (60–90% max HR).
hrmax-calculation — Max HR = 220 − Age.
target-heart-rate — computing a target HR zone from these percentages.
mode-of-activity — expanded list of aerobic modalities.
beginner-hr-note — the "220 bpm – 192 bpm" handwritten note.
resistance-training-variables-table — the strength/endurance row in program-design terms.
flexibility-guidelines-acsm — the flexibility row in flexibility-domain terms.
resistance-training-safety-guidelines — the 8-point safe/effective/efficient technique list that follows this table in the source.

SourceReference manual

p.56

Cited authority in source: American College of Sports Medicine. 1998. Position stand: The recommended quantity and quality of exercise for developing and maintaining cardiorespiratory fitness and flexibility in healthy adults. Medicine and Science in Sports and Exercise 30(6): 975–991.

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Educational content only — not medical advice. Always consult a qualified professional for individualized guidance, especially around injury, pregnancy, or medical conditions.