Why hip extension is the explosive engine
Hip extension produces the largest impulse and arrives first in nearly every athletic movement. Decompose the ground reaction force during a countermovement jump and 45–52 percent of the lower-limb impulse comes from the hip, 30–35 percent from the knee, and 18–22 percent from the ankle (Vanrenterghem 2008; McErlain-Naylor 2014). What makes the hip uniquely valuable is range of motion combined with a long moment arm: it can keep producing meaningful torque even at extremely high angular velocities.
| Movement | Hip contribution | Peak extension velocity (rad/s) | Primary stimulus |
|---|---|---|---|
| Back squat (1RM) | 32% | 3.5 | Maximum strength |
| Trap-bar jump (30% 1RM) | 49% | 9.8 | Strength-speed |
| Kettlebell swing | 61% | 11.4 | Ballistic extension |
| Power clean (80% 1RM) | 54% | 10.2 | Triple extension |
| Countermovement jump | 47% | 9.1 | SSC + extension |
The first insight is that the squat — despite its reputation — is a relatively poor hip-extension stimulus once you cross intermediate strength levels. That explains why many trainees plateau on jump height despite continued back squat gains. The second insight is that kettlebell swings and trap-bar jumps look unremarkable on paper but consistently produce hip contributions above 50 percent at safe loads, which is why they anchor the protocol below.
Set measurable targets: RFD and peak power
“Jump higher” is not a target. The PoinT GO Lab uses three specific metrics that the IMU can extract from a single CMJ.
1) 100 ms RFD. The force produced 100 milliseconds after movement onset. This window dominates short sprints and jump take-offs. Untrained adult males average around 1,800 N/s; elite jumping athletes exceed 4,500 N/s.
2) Peak power (W/kg). The instantaneous concentric maximum. Untrained males average about 38 W/kg in the CMJ; elite jump-sport athletes regularly exceed 60 W/kg.
3) Load-velocity slope. The slope of mean velocity across 30, 50, and 70 percent 1RM trap-bar jumps. A steep slope (velocity drops rapidly with load) signals a velocity deficit; a shallow slope signals a strength deficit. The slope tells you which end of the curve to bias.
The PoinT GO IMU computes all three in the same session. Measure at week 0, week 4, and week 8. Successful eight-week outcomes typically show 20–30 percent gains in 100 ms RFD, 8–12 percent gains in peak power, and a flatter load-velocity slope.
The four-phase training protocol
Phase 1 — Foundation (weeks 1–2). Restore the hip-hinge pattern and build baseline strength. Glute bridge 3×12, Romanian deadlift 4×6 at 70 percent 1RM, kettlebell swing 5×10. Cue the swing as a hip snap rather than a hinge: the concentric phase should finish in under 0.3 seconds.
Phase 2 — Progressive load (weeks 3–4). Introduce trap-bar jumps. 5×3 at 30 percent 1RM, every rep above 1.7 m/s. Add hang clean pulls 4×3 at 70 percent 1RM to emphasize triple extension. Maintain swings to keep ballistic extension volume up.
Phase 3 — Velocity priority (weeks 5–6). Drop load and chase velocity. Trap-bar jump 6×2 at 25 percent 1RM, every rep above 2.0 m/s; if not, lower the load. Box jumps 4×3 (low box, <50 cm) plus medicine-ball slams 4×5 to add rotational triple-extension volume.
Phase 4 — Integration and peaking (weeks 7–8). Run contrast sets: trap-bar deadlift 3×3 at 85 percent 1RM, rest 90 seconds, then trap-bar jumps 3×3 at 30 percent 1RM. Post-activation potentiation typically lifts jump power 8–12 percent acutely.
The <a href="https://poin-t-go.com" target="_blank" rel="noopener">PoinT GO IMU sensor</a> resolves the concentric time of a kettlebell swing, the mean velocity of a trap-bar jump, and the triple-extension synchronization of a power clean. Pair it with the <a href="/en/exercises/countermovement-jump">countermovement jump protocol</a> and the <a href="/en/exercises/hex-bar-jump-squat-power">hex bar jump squat guide</a> to apply this protocol with confidence. Learn More About PoinT GO
Glute activation and neural priming routine
Twelve minutes of activation before the working sets reliably adds 7–12 percent to the first set’s RFD. The recommended routine sits below.
| Order | Exercise | Sets×reps | Purpose |
|---|---|---|---|
| 1 | Banded glute bridge | 2×15 | Glute max activation |
| 2 | 90/90 wall breathing | 2×5 breaths | Pelvic alignment, core pretension |
| 3 | Single-leg RDL | 2×6/side | Hamstring neural drive |
| 4 | Pogo hopping | 3×10 | Ankle stiffness, SSC priming |
| 5 | Easy kettlebell swing | 2×8 (50% load) | Movement rehearsal |
Two non-obvious points. First, pairing glute activation with breathing and core pretension transfers more output than isolated glute work. Second, the 50-percent-load swing right before the working sets primes the nervous system enough to add 0.05–0.08 m/s to the first working set’s mean velocity.
The most common mistake is letting activation balloon to 25–30 minutes. Tillin and Bishop’s 2009 PAP meta-analysis showed that potentiation decays sharply if too much time passes between stimulus and target movement. Keep the routine under 15 minutes and start the first working set immediately.
Eight-week integrated program with measurement schedule
Three lower-body sessions per week, four phases laid out below.
| Week | Session A (Mon) | Session B (Wed) | Session C (Fri) |
|---|---|---|---|
| 1–2 | RDL 4×6, KB swing 5×10 | Glute bridge 4×12, box jump 4×3 | Squat 4×6, KB swing 4×12 |
| 3–4 | Trap-bar jump 5×3@30%, hang clean pull 4×3 | RDL 4×5@75%, box jump 5×3 | Squat 4×5@80%, KB swing 5×10 |
| 5–6 | Trap-bar jump 6×2@25%, MB slam 4×5 | Box jump 5×3, single-leg RDL 3×6/side | Squat 5×3@85%, trap-bar jump 4×2 |
| 7–8 | Contrast: trap-bar DL 3×3@85% + trap-bar jump 3×3 | Box jump 4×3, MB rotational throw 4×5/side | Peaking 1RM or measurement |
Measure with the PoinT GO IMU at week 0, week 4, and week 8: three CMJs (height, peak power, 100 ms RFD), trap-bar jumps at 30/50/70 percent 1RM (load-velocity slope), and a 32 kg kettlebell swing for 10 reps (mean concentric time). Expected outcomes for a general trainee: jump height +4.2 cm, 100 ms RFD +24 percent, mean velocity at 30 percent 1RM +0.18 m/s. Athletes typically see roughly half those gains in absolute terms, but report 18–25 percent improvements in side-to-side asymmetry and landing impact.
Recovery matters disproportionately for power work. Sleep below seven hours or protein below 1.6 g/kg/day cuts RFD progress roughly in half. The training is necessary but not sufficient.
Frequently asked questions
01Are kettlebell swings actually useful for jump height?+
02If I deadlift more, will I jump higher?+
03Trap-bar jumps versus box jumps — which is better?+
04Can I run PAP contrast sets every session?+
05Why does this program ignore running?+
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