Sit-Ups (1-Min, Cooper): Males, Age 30-39

Sit-ups (1-minute) measure abdominal muscular endurance. Data are from Physical Fitness Assessments and Norms for Adults and Law Enforcement (Cooper Institute, Dallas TX), widely used by US police departments, the FBI, and military branches. The participant performs as many bent-knee sit-ups as possible in 60 seconds. Because the source population is law enforcement candidates, likely fitter than the general public. These norms may be higher than population-wide averages. Note: this source is an institutional monograph with no DOI and undisclosed sample sizes; it is the only publication providing full percentile tables by age and sex for this test.

Data source: Cooper Institute (Law Enforcement) (2007) About this study

Sit-Ups (1-Min, Cooper) Strength Males 30-39

Percentile Distribution (reps)

Percentile distribution (reps) 5th 5th: 23 reps 23 25th 25th: 31 reps 31 50th 50th: 36 reps 36 75th 75th: 42 reps 42 95th 95th: 51 reps 51 0 12 24 36 48 60 reps Percentile distribution (reps) 5th 5th: 23 reps 23 25th 25th: 31 reps 31 50th 50th: 36 reps 36 75th 75th: 42 reps 42 95th 95th: 51 reps 51 0 12 24 36 48 60 reps
Percentile Value (reps) Rating
5th 23 Poor
25th 31 Below average
50th 36 Average
75th 42 Above average
95th 51 Excellent

What these numbers mean for males aged 30-39

A score around 36 reps is typical (50th percentile) for males in this age group. Scores above about 42 reps fall near the 75th percentile or higher, indicating above-average performance. Scores below about 31 reps fall near the 25th percentile, about 75% of the reference population scored higher.

Percentiles show how common a value is, not whether it is healthy.

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Other age brackets
20-2940-4950-5960+ All
Females data Females, 30-39
Age trend

Related Metrics

Cooper Law Enforcement Fitness Battery

This metric is part of the Cooper law enforcement fitness battery, a six-test assessment used by US police departments, the FBI, and military branches.