What the Test Measures
The sit-and-reach test measures the flexibility of the posterior chain — primarily the hamstrings and the lower back — by measuring how far past the feet a person can reach in a seated, legs-extended position. It is one of the most widely administered flexibility assessments in fitness testing, used in school physical education, clinical settings and athlete screening programmes.
Poor performance on the sit-and-reach test correlates with tight hamstrings and reduced lumbar spine mobility, both of which are associated with an increased risk of lower back pain and injury. Flexibility in this area is also functionally significant — it affects posture, the quality of hip hinge movements (deadlifts, Romanian deadlifts, Good Mornings), and the ability to move through a full range of motion in compound lower body exercises.
Protocol — No Box (Wall Method)
- Warm up thoroughly — the sit-and-reach test must never be performed cold. 5 to 10 minutes of light movement followed by gentle hamstring stretching prepares the tissues correctly and produces a reliable result
- Sit on a mat with legs fully extended and feet flat against a wall or the edge of a sit-and-reach box. Feet shoulder-width apart
- Place a ruler on top of the legs with the zero end pointing toward the feet — zero at the feet, positive numbers extending beyond the feet
- Reach forward with both hands, one on top of the other, as far as possible — smoothly and without bouncing
- Hold the furthest position for 2 seconds while a partner reads the ruler measurement
- Record the distance in centimetres: negative values indicate the reach falls short of the feet; positive values indicate reach past the feet
- Perform 2 attempts and record the best result
No bouncing — hold the position
Bouncing into the stretch — a rapid, repeated effort to go further — produces a falsely high reading and risks a hamstring strain. The reach must be a single smooth movement that is held at the furthest point for 2 seconds. This produces an accurate measure of genuine flexibility rather than momentum.
Normative Data — Men (centimetres)
| Age | Excellent | Good | Average | Below Average |
|---|---|---|---|---|
| 20–29 | +17 or more | +6 to +16 | 0 to +5 | Below 0 |
| 30–39 | +15 or more | +4 to +14 | −2 to +3 | Below −2 |
| 40–49 | +13 or more | +2 to +12 | −3 to +1 | Below −3 |
| 50–59 | +9 or more | −1 to +8 | −5 to −2 | Below −5 |
| 60+ | +7 or more | −3 to +6 | −7 to −4 | Below −7 |
Normative Data — Women (centimetres)
| Age | Excellent | Good | Average | Below Average |
|---|---|---|---|---|
| 20–29 | +21 or more | +11 to +20 | +1 to +10 | Below +1 |
| 30–39 | +18 or more | +7 to +17 | 0 to +6 | Below 0 |
| 40–49 | +15 or more | +4 to +14 | −2 to +3 | Below −2 |
| 50–59 | +12 or more | +1 to +11 | −3 to 0 | Below −3 |
| 60+ | +10 or more | 0 to +9 | −5 to −1 | Below −5 |
Coaching Points
The sit-and-reach test performed cold produces a score 3 to 5 centimetres lower than the same test performed after a proper warm-up and light stretching. Always retest under the same conditions — same warm-up protocol, same time of day — for reliable comparisons over time.
Hamstring and lower back flexibility improves with consistent daily stretching held for 30 to 45 seconds per stretch. Progress is slower than strength development but steady. See the Stretching and Mobility page for a structured approach. Retest every 6 to 8 weeks to track improvement.
