Fencing Lunge Explosiveness Test Protocol: Measuring Reach Distance and Push-Off Time

A coach lays a tape measure along the strip after a Tuesday session and marks where the front foot lands on a full lunge. Athlete A stretches out to 132 centimeters. Athlete B, shorter and more compact through the hips, lands at 128 — close enough that the coach calls it roughly the same lunge and moves on. Three days later in a pool bout, Athlete A gets touched on the counter-attack twice in a row on exactly the action that looked identical in testing, while Athlete B keeps landing first from the same starting distance against a similar opponent. The tape measure never explained why, because it was never built to.

What the tape missed is time. A fencer's blade arrives whenever the body gets it there, and two lunges that land at nearly the same spot on the floor can come from completely different rear-leg outputs — one athlete coasting into position on long levers, the other firing the rear leg hard enough to cover slightly less ground in noticeably less time. Reach distance alone cannot tell those two fencers apart, and a push-off time on its own is no better, since a fencer who barely travels can post a fast number without ever threatening an opponent's distance. The protocol below pairs a reach-distance mark with a rear-foot push-off time captured on the same rep, so a lunge that looks identical on a tape measure stops looking identical on paper.

Reach distance is the easiest number to grab off a fencing strip — lay a tape from the en-garde front-foot mark to the landing mark and write down the centimeters. The trouble is that reach is a position, not a rate. A fencer can arrive at 130cm by driving hard off the rear leg, or by having longer limbs and a lower stance that lets the body settle into the same position on a slower, more controlled push. Both fencers hit the same tape mark. Only one of them can actually close distance on an opponent who reads the attack and retreats.

Turner, James, Dimitriou, Greenhalgh, Moody, Fulcher, Mias, and Kilduff (2014), reviewing the physical determinants of Olympic fencing performance in the Journal of Strength and Conditioning Research, built a three-variable model combining time to peak force, leg length, and a hip-flexibility measure that together explained roughly 85% of the variance in lunge performance across their sample. Leg length alone buys reach; it says nothing about how quickly that reach gets delivered. Testing distance without timing the push-off leaves half of that model invisible — exactly the gap that let Athlete A and Athlete B look identical on the tape.

The test needs a flat, strip-length surface, a fixed target so every rep loads the same joint angles, and a way to time the rear leg's push-off without a human thumb on a stopwatch.

Target distance matters more here than it looks. Chida, Inami, Yamaguchi, Yoshida, and Kohtake (2024), publishing in the journal Biomechanics, had fifteen fencers lunge to three different target distances and found the rear leg's flexion, extension, and ankle-plantarflexion pattern changed measurably with each one. Test at a distance that drifts session to session and the numbers stop being comparable, because the movement itself has changed underneath them. Mark the target once, tape it down, and reuse the same distance every time an athlete retests.

1. Warm-up (10-12 minutes): Footwork drills, dynamic hip and ankle mobility, then two submaximal lunges at roughly 70% and 90% effort to the marked target.
2. Set the target: Place a fixed marker at 90-95% of the athlete's standing full-extension reach — weapon arm plus front-leg reach from the en-garde stance — so every maximal lunge is near-maximal but repeatable across sessions.
3. Familiarization: One lunge at about 85% effort, focused on hitting full extension cleanly before the front foot lands.
4. Maximal reps: The athlete performs 4 lunges at full effort from a static en-garde stance, with 30-45 seconds of recovery between reps.
5. Start the clock at push-off: Mark timing start as the first detectable rise in rear-foot ground-reaction force on a contact mat, or the first acceleration spike from a rear-ankle or waist-mounted IMU.
6. Stop the clock at full extension: Timing ends the instant the front foot contacts the ground with the rear leg fully extended and the weapon arm locked out. A rep only counts if both checkpoints are visibly met — video-verify if there is any doubt.
7. Mark reach distance: Measure from the en-garde front-foot start line to the front-foot landing mark on that same rep, to the nearest centimeter.
8. Score from one rep, not the best of each: Take both Reach Distance and Push-Off Time from the single rep with the fastest push-off time among the four, rather than pairing the best distance from one rep with the best time from another.
9. Retest interval: Wait at least 24-48 hours after any high-load lower-body session, and keep the target at the exact same marked distance every time.

Three numbers come out of the test rep, and only the third one actually answers the coaching question.

Reach Distance (RD) is the tape measurement in centimeters, from the en-garde front-foot line to the landing mark. It reflects limb length, hip mobility, and stance depth as much as power.

Push-Off Time (PT) is the interval in milliseconds from the first detectable rear-foot drive to front-foot ground contact at full extension. It reflects how fast the rear leg's extensors convert into forward travel — closer to the quality that actually decides a bout.

Reach Velocity (RV) converts the two into a single rate: RV (m/s) = (RD ÷ 100) ÷ (PT ÷ 1000), using RD in centimeters and PT in milliseconds. It is the average horizontal speed the body traveled across the whole lunge, and the number that actually separates Athlete A from Athlete B.

Worked example: Athlete A records a Reach Distance of 132cm and a Push-Off Time of 780ms, for a Reach Velocity of 1.69 m/s. Athlete B records 128cm over 560ms, for 2.29 m/s. Despite a 4cm shorter reach, Athlete B's lunge moves the body roughly 35% faster on average — the gap the tape measure alone could never show, and the reason Athlete B kept winning the same exchange in competition.

Di Cagno, Iuliano, Buonsenso, Giombini, Di Martino, Parisi, Calcagno, and Fiorilli (2020), publishing in the Journal of Sports Science and Medicine, ran a six-week randomized trial on 54 national-level junior male foil fencers comparing accentuated eccentric flywheel training against a standard plyometric program. Before touching the training variable, they established test-retest reliability for the two raw measures this protocol builds on: lunge distance without weapon (ICC = 0.792, 95% CI 0.668-0.873) and lunge time without weapon (ICC = 0.845, 95% CI 0.748-0.907) — both in the good-reliability band by the Koo and Li (2016) classification, meaning a single session's reading can be trusted rather than dismissed as noise.

What the training results showed is the part worth sitting with. Six weeks of eccentric flywheel work moved lunge distance without weapon from 216.19cm to 248.63cm in the intervention group (p = 0.006, a medium-large effect at partial eta-squared = 0.161). Lunge time over the same period barely moved, 0.96s to 0.94s, and the difference was not statistically significant (p = 0.437). The athletes got measurably longer without getting measurably faster off the rear leg. Recomputed as Reach Velocity, that works out to roughly 2.25 m/s before training and 2.64 m/s after — an improvement that came almost entirely from added reach rather than added push-off speed, precisely the blind spot this protocol is built to catch. The study's own stated limitation is that its sample was limited to junior male foil fencers, so the pattern may not hold for senior athletes or other weapons.

Chida, Inami, Yamaguchi, Yoshida, and Kohtake (2024) tested fifteen fencers lunging to three different target distances and found the rear leg's push-off strategy shifted with target distance — greater rear-knee flexion early in the movement, greater hip and knee extension, and greater ankle-plantarflexion velocity as the target moved farther away. Their limitation section flags that all fifteen participants lunged in a controlled lab setting at a single skill level, so the exact kinematic values should not be read as fixed norms — but the core finding stands as a direct caution here: change the target distance between sessions and the push-off numbers change with it, independent of any real gain or loss in explosiveness.

There is no published, universally agreed cutoff for Reach Velocity, since the metric is assembled here from two established measures rather than lifted from a single validated instrument. The bands below use the Di Cagno et al. (2020) junior national-level sample as an anchor and should be treated as a working reference, refined against retest data once three or four sessions are on file.

Two comparisons matter more than which band an athlete falls into. First, separate Reach Distance from Push-Off Time rather than reading Reach Velocity alone: a long reach with a slow push-off points toward flexibility or stance confidence rather than power, while a short reach with a fast push-off points toward a mobility limit rather than a strength problem. Second, retest only at the same target distance every time — per Chida et al. (2024), a 15cm change in where the target sits can move the numbers as much as several weeks of training would.

A low Reach Velocity score is not one problem — it is two different problems depending on which half is dragging it down.

If Reach Distance is short but Push-Off Time is fast, the limiter is usually hip flexibility, ankle dorsiflexion range, or plain confidence in the stance rather than power — a fencer who can already fire quickly just has not given the rear leg enough travel to work with. Split-stance mobility work and progressively deeper lunge-hold drills tend to move this number within a few weeks, often without touching strength training at all.

If Push-Off Time is slow but Reach Distance is long, the limiter is rear-leg rate of force development, and reach-focused flexibility drills will not fix it — they can even make the score look better on the tape while leaving the actual problem untouched, close to what happened in the Di Cagno et al. (2020) sample. Training should lean on the same short, ballistic pattern the test measures: banded or flywheel-loaded rear-leg lunge drives, depth-jump-to-lunge combinations, and low-rep maximal-intent lunges rather than high-volume, submaximal reps that groove a slower push.

Retest on a four-to-six week cycle at the same fixed target distance. A single session's Push-Off Time swing of a few hundredths of a second is closer to normal test-day variation than a real signal, and chasing week-to-week noise on this metric burns training time a program could spend somewhere that actually moves it.