The History
Dudley Allen Sargent was born in Belfast, Maine in 1849. By the time he was appointed Director of the Hemenway Gymnasium at Harvard University in 1879, he had already developed a conviction that physical fitness could be measured, quantified and improved systematically — a radical idea at a time when physical education in America was largely military drill and informal sport.
At Harvard, Sargent built what was effectively the world's first sports science laboratory. He measured thousands of students across dozens of physical attributes — height, weight, lung capacity, strength, and athletic performance. He believed that without measurement, there was no meaningful way to assess physical development or track improvement over time. He was right, and the exercise science community has been working from that same principle ever since.
The jump test that bears his name — developed in the late 1880s — was a central part of his assessment battery. The protocol was elegant in its simplicity: stand next to a wall, reach as high as possible and mark the point, then jump and mark the highest point reached. The difference between the two marks was the score. No specialist equipment. No laboratory. Reproducible anywhere. Valid for anyone. It measured something real and important — the explosive power of the lower body — in a way that had never been formally quantified before.
The physical examination shows that the average student who enters college is not only below the standard in height, weight and general development, but is also deficient in strength and vital capacity.
— Dudley Allen Sargent, Harvard University, 1890sSargent was also, notably for his era, a strong advocate for women's physical education. When it was controversial to suggest women could and should train seriously, he published data showing their capacity for significant physical development. He founded the Sargent School of Physical Education in Cambridge, Massachusetts — an institution for training female physical education teachers that continued his work and later became part of Boston University.
He died in 1924. His jump test outlived him by a century and is still in use today. The modern Vertical Jump test, used at the NFL Scouting Combine and in elite sports academies worldwide, is a direct descendant of Sargent's original protocol. Old school does not mean outdated. It means it worked.
How to Perform the Test
Protocol — Original Sargent Method
- Apply chalk or chalk dust to the fingertips of the dominant hand
- Stand side-on next to a smooth wall in bare feet or flat-soled shoes
- With the dominant arm raised fully, mark the wall at the highest point you can reach while standing flat-footed — this is the standing reach height
- Step slightly away from the wall, then perform a countermovement jump — bend the knees, swing the arms and explode upward — touching the wall at the peak
- The chalk marks the highest point of contact automatically
- Measure the distance between the standing reach mark and the jump mark — this is the Sargent Jump score in centimetres
- Perform 3 attempts and record the best result
- Rest fully between attempts — explosive power requires complete recovery between maximal efforts
Chalk on the fingertips — the original method
Sargent's original protocol used chalk on the fingertips to leave a clear mark on the wall at the peak of the jump. This remains the simplest and most reliable method for a field test without specialist equipment. A light dusting of chalk on the middle fingertip of the dominant hand produces a precise, readable mark. Modern alternatives include a Vertec device or jump mat — both measure the same quality, none improve on the elegant simplicity of the original.
Normative Data — Men (centimetres)
| Age | Excellent | Good | Average | Below Average |
|---|---|---|---|---|
| 18–29 | Over 65cm | 50–65cm | 40–49cm | Under 40cm |
| 30–39 | Over 60cm | 45–60cm | 35–44cm | Under 35cm |
| 40–49 | Over 55cm | 40–55cm | 30–39cm | Under 30cm |
| 50–59 | Over 45cm | 35–45cm | 25–34cm | Under 25cm |
| 60+ | Over 35cm | 25–35cm | 18–24cm | Under 18cm |
Normative Data — Women (centimetres)
| Age | Excellent | Good | Average | Below Average |
|---|---|---|---|---|
| 18–29 | Over 50cm | 40–50cm | 30–39cm | Under 30cm |
| 30–39 | Over 45cm | 35–45cm | 25–34cm | Under 25cm |
| 40–49 | Over 40cm | 30–40cm | 22–29cm | Under 22cm |
| 50–59 | Over 35cm | 25–35cm | 18–24cm | Under 18cm |
| 60+ | Over 28cm | 20–28cm | 14–19cm | Under 14cm |
Coaching Points
The Sargent Jump and the Vertical Jump Test measure the same quality using the same protocol. The scores are directly comparable. The distinction is historical — Sargent's name belongs on the original. Use whichever name you prefer. The chalk and the wall are the same.
Vertical jump height responds well to strength training — particularly barbell squats, Romanian deadlifts and hip thrusts — and to plyometric work including box jumps, depth jumps and jump squats. Improvements of 5 to 10cm over an 8 to 12 week training block are achievable with consistent work. The General Athletic Development programme includes both power and plyometric elements.
