Cooper Vertical Jump: Source and Display Method
- Source label: Law Enforcement Studies data. The table does not identify one academy, sampling frame, collection period, or sample size.
- Coverage: men are shown through 50-59 and women through 40-49; no reason is given for the missing older female rows.
- Method: standing reach is subtracted from the best stationary two-foot jump reach.
- Comparability: force-plate flight-time height and jump-and-reach height are different measurement procedures.
The current numeric table was manually corrected before this review and is preserved exactly. Automated OCR and reviewer readings of scanned images are used to flag differences, not to overwrite a published value. Permanent checks lock the reviewed data and verify its age-page and trend copies.
The field procedure is checked against the Indiana Law Enforcement Academy protocol: stationary two-foot jump, arm action permitted, nearest half-inch scoring, and best of three trials.