Plyometrics reliably increase vertical jump height. A meta-analysis published in the British Journal of Sports Medicine found that plyometric training improved vertical jump performance by 4.7% to 8.7%, translating to roughly 2 to 6 centimeters depending on the type of jump tested. For athletes in basketball, volleyball, or track and field, that gain can be the difference between blocking a shot and missing it.
Why Plyometrics Work for Jumping
Every jump you perform uses something called the stretch-shortening cycle: your muscles rapidly lengthen (as you dip down) and then immediately shorten (as you push off the ground). When active muscle lengthening is immediately followed by shortening this way, you produce significantly more force, work, and power than you would from a standing start with no dip. The dip lets your tendons store elastic energy and triggers reflexes that amplify the push-off.
Plyometric exercises train this cycle specifically. Over time, they improve the pre-activation of your muscles before landing, sharpen stretch-reflex responses, and increase the elastic energy your tendons can store and release. Your nervous system also gets better at recruiting motor units quickly, which means more muscle fibers firing at the right moment. These adaptations are neuromuscular, not just muscular, which is why plyometrics improve jump height even without adding significant muscle size.
How Much Vertical You Can Expect to Gain
The meta-analysis pooled data across multiple studies and broke the results down by jump type. The countermovement jump, which is closest to how most athletes jump in a game (dip and go), saw the largest average improvement at 8.7%. The countermovement jump with an arm swing improved by 7.5%. The squat jump, which starts from a dead stop with no dip, and the drop jump both improved by 4.7%.
In practical terms, if your standing vertical is 60 centimeters, an 8.7% gain adds about 5 centimeters. Most plyometric programs in the studies reviewed ran between 6 and 12 weeks, with sessions typically two to three times per week. Gains tend to show up within the first several weeks, though they continue accumulating across a full training block.
Plyometrics vs. Weight Training for Jump Height
Strength training alone does improve vertical jump, but plyometrics appear to be more effective for that specific goal. A systematic review and meta-analysis comparing the two approaches found that plyometric training produced a moderate effect on vertical jump performance, while strength training produced only a small, non-significant effect. The plyometric advantage makes sense: jumping is a fast, explosive movement, and plyometrics train the exact speed and coordination pattern involved.
That said, the two methods aren’t competing. Strength forms the foundation that plyometrics build on. A stronger athlete has more raw force available, and plyometrics teach the nervous system to deploy that force quickly. Many coaches program both in the same training block, using squats and deadlifts to build baseline strength while using plyometrics to convert that strength into explosive power.
Which Exercises Are Most Effective
Not all plyometric exercises produce identical results. A 12-week study comparing depth jumps (stepping off a box and immediately jumping upon landing) to countermovement jumps (simply dipping and jumping from the floor) found that depth jumps produced superior improvements in vertical jump height across all three jump types tested. The researchers attributed this to neuromuscular specificity: depth jumps force your muscles to absorb and redirect greater forces in less time, which creates a stronger training stimulus.
For someone new to plyometrics, countermovement jumps, squat jumps, and box jumps are a reasonable starting point. They impose less stress on the joints while still training the stretch-shortening cycle. As you build tolerance and strength, depth jumps and drop jumps from progressively higher boxes provide a more intense stimulus. The key principle is that the exercise should challenge your ability to absorb force and redirect it quickly, not just make you tired.
What Happens to Your Muscles
Plyometrics place heavy demands on your fast-twitch muscle fibers, the fibers responsible for explosive movements. Research using electron microscopy after a single plyometric session found that 84% to 86% of fast-twitch fibers showed structural damage, compared to only 27% of slow-twitch fibers. Within the fast-twitch category, the most explosive subtype (type IIx) sustained the most damage at 14.3%, followed by type IIa at 10.3%, while slow-twitch fibers showed just 7.6%.
This selective damage is actually the point. Fast-twitch fibers have narrower internal structures that are more vulnerable to the high forces of eccentric (lengthening) contractions. When they recover, they adapt to handle those forces better. This is why adequate recovery between plyometric sessions matters so much, and why doing plyometrics every day is counterproductive. The fibers that need to grow stronger are also the ones that need more time to repair.
Rest Periods During Training
How you structure rest within a plyometric session affects whether you’re training power or fatigue tolerance. Research comparing continuous plyometric exercise to interval-based approaches found that a work-to-rest ratio of 1:2 (for example, 45 seconds of jumping followed by 90 seconds of rest) was the minimum needed to maintain similar power output across all sets. With a 1:1 ratio, athletes could still perform but started each new set before fully recovering, which shifts the stimulus toward fatigue adaptation rather than peak power.
If your goal is maximum vertical jump improvement, rest long enough between sets that each rep feels explosive. If you’re grinding through reps on fatigued legs, you’re no longer training the fast, high-force pattern that drives jump gains. Two to three minutes between sets of high-intensity exercises like depth jumps is a common recommendation in practice.
Strength Prerequisites
High-intensity plyometrics, particularly depth jumps, place significant stress on your joints and connective tissue. A widely cited guideline from the strength and conditioning literature suggests that athletes should be able to squat 1.5 times their body mass before beginning intensive lower-body plyometrics. A faster benchmark is squatting 60% of your body mass for five reps within five seconds, which tests both strength and the ability to produce force quickly.
These thresholds exist because your muscles, tendons, and bones need to absorb forces several times your body weight during landing. Without a baseline of strength, the landing forces overwhelm your tissues instead of being redirected into the next jump. Beginners who can’t yet hit these numbers can still benefit from lower-intensity plyometrics like jump rope, pogo hops, and low box jumps while building their squat strength in parallel.