Science
Whole-body EMS — electrical muscle stimulation — is one of the best-researched training methods of the past 15 years, with much of that research coming from Prof. Dr. Wolfgang Kemmler (FAU Erlangen-Nürnberg).
4 RCTs
randomised controlled trials
FAU Erlangen
Kemmler's research base
2017–2021
study period
100%
Open Access · every original linked
How to read this
We link to the original scientific papers and put each one into plain language. So you know exactly what the numbers mean for your everyday life — and where the evidence is (still) thin.
Back & health
Randomised, controlled, peer-reviewed. Every card links straight to the original study.
Study 01
Kemmler et al., 2017 · Evid. Based Complement. Alternat. Med.
Result: Pain intensity and frequency fell significantly (p < .001).
What this means for you
Participants with chronic back pain had noticeably less pain, and less often, after the programme — the effect was too strong to be explained by chance.
Study 02
Weissenfels et al., 2018 · Journal of Pain Research
Result: Clearly reduced pain in the lower back, improved trunk extensor strength.
What this means for you
EMS helped most clearly in the lower back — the classic office-chair pain. The supporting muscles got stronger and the complaints eased.
Study 03
Weissenfels et al., 2019 · BioMed Research International
Result: Both methods reduced pain to a comparable degree — EMS in 20 instead of 45 min per week.
What this means for you
EMS was just as effective as conventional back training, with far less time spent training. A real option for anyone who doesn't have time for 45-minute sessions.
Study 04
Three-Armed RCT, 2021 · Frontiers in Physiology
Result: All three methods comparably effective — with clearly less training volume for EMS.
What this means for you
For a comparable effect, EMS needed only a fraction of the training volume. In short: the same effect in a smaller time window.
Straight talk on evidence
We show what the research says — including the places where the evidence is thin.
Strength, endurance & more
Four areas where EMS has shown an effect in controlled studies.
Untrained participants +23.5%, athletes +32.6% isometric maximum strength on average.
For you
Starting from the couch means the biggest gain in percentage terms. Trained athletes still get noticeably stronger.
Static +30.3%, dynamic +41% on average.
For you
You last longer — stairs, shopping bags, workouts.
Higher bone density, prevention of age-related muscle loss.
For you
EMS works against the natural loss of muscle and bone that starts in your mid-30s. Especially valuable for women over 50.
Improvements of around 2–19% depending on the protocol.
For you
For athletes: measurably faster and higher — depending on the training plan and starting level.
Please note: study results are general findings, not a promise of a cure for any individual. Real results vary depending on the person, how often you train and where you start from. If you have a pre-existing condition, talk to your doctor before you begin.
From reading to feeling it
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