Woman exercising on a mini trampoline, shown from three angles.
Jump Fitness

Does 15 Minutes of Rebounding Equal a Run?

Does 15 minutes of rebounding match a run? What the ACE and NASA-linked studies measured, and how to compare calories and effort fairly.

By Up Is Jump Team8 min read

It's October, it's dark by dinnertime, and the running shoes by the door are starting to look like a chore. Then your feed serves up a clip saying 10 minutes on a mini-trampoline beats a 30-minute run, "according to NASA." So does 15 minutes of rebounding equal a run? It can match a 15-minute run, but only if you bounce hard. Easy bouncing won't do it, and no 15-minute session replaces a 30-minute run. Here's what the research actually measured and how to compare the two fairly.

The short answer

Rebounding can be real cardio, but it doesn't give you extra minutes for free.

The best direct evidence is a study sponsored by the American Council on Exercise (ACE) in 2016. Researchers had college students do a 19-minute mini-trampoline routine. ACE reported that the energy it used was similar to running at 6 mph on flat ground. That's a meaningful result. A 6 mph pace is a 10-minute mile, which is solid recreational running.

Look at the time, though. The comparison is minute for minute. Fifteen minutes of rebounding at that effort would burn about what 15 minutes of running at 6 mph burns, and roughly half of what a 30-minute run burns. Gentle bouncing while you watch TV is a different activity, and it won't come close.

No published study tests exactly 15 minutes of rebounding against a run, so any precise answer is an estimate. The numbers below show how to make that estimate. And the viral claim that NASA found 10 minutes of jumping beats 30 minutes of jogging isn't what the NASA-linked study says.

Where the "NASA beats running" claim comes from

The study behind the headlines is real. Bhattacharya, McCutcheon, Shvartz and Greenleaf published "Body acceleration distribution and O2 uptake in humans during running and jumping" in the Journal of Applied Physiology in 1980. The work was done at NASA's Ames Research Center.

It was small: 8 healthy men aged 19 to 26. They walked and ran on a treadmill at four speeds and jumped on a trampoline at four heights. The researchers measured acceleration at the ankle, lower back and forehead, along with oxygen uptake and heart rate.

They found that jumping produced oxygen uptake and heart rates comparable to running. They also found that the "biomechanical stimulus," meaning the forces moving through the body, was greater in trampoline jumping than in running. NASA's interest was astronauts. The authors suggested the results could help design ways to prevent deconditioning in people exposed to weightlessness.

That's where the "68% more effective" line and the "10 minutes beats 30" line fall apart. Neither figure appears in the study's abstract, which contains no percentages at all. The study compared body acceleration to oxygen use. It didn't compare calories burned per session, and it didn't time a short jumping workout against a longer jog. Popular articles, like a widely shared Tom's Guide piece, turned a finding about acceleration in eight young men into a promise about fitness shortcuts.

What the ACE study measured

The ACE study is the closer match to what most people do at home: a structured mini-trampoline workout.

Researchers at the University of Wisconsin–La Crosse recruited 24 recreationally active, apparently healthy college students. Each did a 19-minute full-body routine on a mini-trampoline. Here's what they recorded:

  • Heart rate: During the main workout portion, heart rate averaged 79% of each person's maximum.
  • Oxygen uptake: It averaged 59% of VO2max, which is the most oxygen a person can use.
  • Calories: Over the whole session, including warm-up and cool-down, men averaged 11.0 calories per minute and women 8.3. During the workout portion alone, those rose to 12.4 and 9.4.
  • Perceived effort: Participants rated the workout 11.7 on average, in the light-to-moderate range. That's lower than the roughly 13 you'd expect at that intensity.

The 6 mph comparison comes from published running values. Apart from a treadmill test to find each person's maximums, the participants didn't run in the study.

ACE lists its own caveats, and they matter. The sample was small and young, and each person did only one session. Calories were estimated from oxygen use. ACE sponsored the study, and the routine was designed by JumpSport, a company that makes rebounders. Earlier research is also mixed. McGlone and colleagues (2002) found no significant difference between mini-trampoline exercise and treadmill running in max heart rate, VO2max or energy use, but studies by Edin and Gerberich (both 1990) did not support that.

Comparing by the numbers

To compare a workout you haven't done in a lab, researchers use METs (metabolic equivalents). One MET is roughly the energy you use sitting still. The Compendium of Physical Activities, the standard reference, lists:

  • Trampoline, recreational: 6.3 METs
  • Trampoline, competitive: 10.3 METs
  • Running, 5.0–5.2 mph: 8.5 METs
  • Running, 6.0–6.3 mph: 9.3 METs

One caution: these trampoline codes cover trampolining in general. They aren't specific to rebounders. A full-size backyard trampoline lets you get big air with long hang time. A rebounder keeps the bounce small and quick, and workouts on one usually mix jogging, jacks and twists. The effort can land above or below the general trampoline value depending on how hard you work.

A worked 15-minute example (an estimate, not a measurement):

A common formula is: calories ≈ METs × body weight in kg × hours. For a 70 kg (about 154 lb) person:

  • 15 minutes of recreational trampolining at 6.3 METs: 6.3 × 70 × 0.25 ≈ 110 calories
  • 15 minutes of running at 6 mph (9.3 METs): 9.3 × 70 × 0.25 ≈ 163 calories
  • 30 minutes of running at 6 mph: about 325 calories
  • 15 minutes at the ACE study's whole-session rates (8.3–11.0 calories per minute): roughly 125–165 calories

So a hard, structured rebounder session can land near a 15-minute run at a 10-minute-mile pace. Casual bouncing lands well below it, and neither one comes close to a 30-minute run. That's about two slices of Thanksgiving pie in one case and one slice in the other. Your own numbers will vary with body weight, fitness and effort.

Joints, fun, and sticking with it

Rebounders are often sold as "easy on the joints." That may feel true, but it hasn't been shown. The NASA-linked study actually found the biomechanical stimulus was greater in trampoline jumping than in running. That doesn't prove rebounding is harder on your body, but it's the opposite of evidence that it's gentler.

The stronger case for rebounding is how it feels. In the ACE study, participants rated the workout easier than their heart rates showed. The researchers suggested the lower-impact feel and the fun of bouncing may explain the gap. ACE Chief Science Officer Cedric Bryant put it this way: "We must not undervalue the 'enjoyment factor.'"

That matters more than it sounds. A workout that feels lighter than it is, and that you can do in the living room on a rainy November night, is one you're more likely to keep doing. Consistency over months beats any single session.

How to use it

Treat rebounding as real cardio when you push the pace, not as a shortcut that turns 15 minutes into 30.

ACE says its routine reached moderate-to-vigorous intensity under fitness-industry guidelines. It fell within the American College of Sports Medicine ranges of 64–94% of max heart rate and 40–85% of VO2max. The calorie rate also fell within ACSM's 6.7–10.0 calories per minute range for weight management. That's the bar to aim for.

Two simple ways to check you're there:

  • Heart rate: Use a watch or chest strap and aim for the upper part of that range. The ACE group averaged about 79% of max.
  • Talk test: At moderate effort you can talk but not sing. At vigorous effort you can only get out a few words at a time.

If you're bouncing and chatting easily, you're getting an easy workout, and that still counts for something. If you want a rebounder session to stand in for a run, plan to match the minutes as well as the effort. Twenty to thirty hard minutes is the fair trade for a 20- to 30-minute run.

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