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. 2025 Sep 1;18(8):811–835. doi: 10.70252/WUPH8495

Supplementary Table 4.

ACSM Fitness Classifications for Body Fat Percentage (%) by Age Group and Sex.

Sex Category BF% 20–29 (n) BF% 30–39 (n) BF% 40–49 (n) BF % 50–59 (n) BF% 60–69 (n)

Male Very Poor 24.9 – 33.4 0 26.4 – 34.4 29 27.8 – 35.2 8 29.2 – 36.4 1 29.8 – 36.8 0

Poor 19.7 – 23.3 0 22.4 – 25.1 35 24.2 – 26.6 3 25.6 – 28.1 0 26.4 – 28.8 0

Fair 15.8 – 18.6 0 19.2 – 21.6 29 21.4 – 23.5 9 23.0 – 24.9 0 23.6 – 25.6 0

Good 11.5 – 14.8 0 15.9 – 18.4 39 18.5 – 20.8 6 20.2 – 22.3 1 21.0 – 23.0 0

Excellent 07.9 – 10.5 0 12.4 – 14.9 20 15.0 – 17.5 7 17.0 – 19.4 2 18.1 – 20.2 1

Very Lean 4.2 – 6.4 0 07.3 – 10.3 17 09.5 – 12.9 8 11.0 – 14.8 0 11.9 – 16.2 0

Female Very Poor 30.5 – 38.6 1 31.5 – 39.0 29 33.4 – 39.1 13 35.0 – 39.8 1 35.6 – 40.3 2

Poor 24.2 – 28.2 0 25.8 – 29.6 20 28.4 – 31.9 4 30.8 – 33.9 0 31.5 – 34.4 0

Fair 20.6 – 23.4 0 22.0 – 24.8 6 24.6 – 27.5 3 27.6 – 30.1 0 28.3 – 30.8 0

Good 16.8 – 19.8 0 17.5 – 21.0 3 19.5 – 23.7 0 22.3 – 26.7 0 23.3 – 27.5 0

Excellent 15.1 – 16.1 0 15.5 – 16.5 1 16.8 – 18.3 0 19.1 – 20.8 0 20.2 – 22.0 0

Very Lean 11.4 – 14.0 0 11.2 – 13.9 0 12.1 – 15.2 2 13.9 – 16.9 0 13.9 – 17.7 0

Notes: ACSM = American College of Sports Medicine; BF% = body fat percentage; Column headers (e.g., 20–29 (n), 30–39 (n)) indicate the number of participants within each age group.