Health Research Digest with Leo and Eva

A 2025 Cochrane review pooled 89 trials and 2,905 adults after stroke. Scientists compared  EMS  with nothing, sham, or practice, then measured voluntary strength and everyday activity without the machine on. CES beat nothing: moderate strength gain (SMD 0.47, 23 trials, 741 people) and activity gain (SMD 0.50)—high-certainty evidence that lasted after treatment. FES helped activity versus nothing (SMD 0.42) and added a small extra lift versus practice alone (SMD 0.22). Side effects were uncommon. Teams from Macquarie, Sydney, and Monash published in the Cochrane Library—gold-standard methods. That is why EMS can help rebuild weak muscle after stroke. Read the full blog for every number, limit, and source.
https://oriems.fit/blogs/research-digest/ems-after-stroke-cochrane-review

A Japanese hospital team ran a peer-reviewed randomised controlled trial of NMES, a form of  EMS   , after acute stroke. They measured quadriceps muscle thickness by ultrasound on day 1 and day 14. The weak thigh lost 2.65 mm with NMES versus 4.64 mm without it. In milder stroke (NIHSS under 12), that thigh stayed at 0.00 mm versus a 3.88 mm drop. Ankle tone was also lower after NMES. The full group result was not statistically firm, so this is a signal, not proof. The work came from Steel Memorial Yawata Hospital and is open access. The full post gives the protocol, safety notes, and limits.https://oriems.fit/blogs/research-digest/japanese-nmes-trial-stroke-quadriceps-muscle
 

Scientists in Seoul tested patient-specific FES, a form of   EMS , after stroke. Two people with hemiplegia trained three times a week for four weeks. Each session included 20 minutes of eight-channel stimulation while they walked. Researchers first mapped muscle synergy and knee–ankle angles against eight healthy adults. They then set pulse width for coordination and amplitude for weak muscles such as tibialis anterior.
After rehabilitation, impaired synergies crossed the 0.85 similarity line. One walker cut the 10-metre time by 23.38 percent. Speed rose from 0.50 to 0.65 m/s, a 30 percent gain. Balance scores climbed 18.42 percent. Paretic single-support time grew. Foot drop eased.
The 2021 paper ran under university ethics review and appeared in SAGE’s Journal of International Medical Research. The sample was small. The numbers still moved. Read the full post for the muscle maps, gait charts, and how the pulses were timed.
 

A 2022 peer-reviewed Polish hospital study tested NMFES, a clinical form of  EMS  , after ischemic stroke.Scientists used electroneurography on 120 patients and 60 healthy volunteers. They recorded M-wave amplitude in the peroneal nerve.The  EMS  plus PNF group rose from 5268 µV to 6009 µV in 60 days (p = 0.04). Exercise alone did not. Skin pads, not needles, delivered supervised pulses.University of Medical Sciences (Poznań, Poland) and MDPI published the work after ethics review.The numbers suggest added clinic  EMS  can support lower-limb nerve signals beside standard rehab.Read the full post for protocol, limits, and tables.https://oriems.fit/blogs/research-digest/supervised-ems-after-stroke-polish-study

After stroke, one leg can turn weak, stiff, and slow. A 2024 systematic review in The Rehabilitation Journal tested whether timed  EMS  could help. University clinicians from Pakistan and the University of Porto registered the plan on PROSPERO and followed PRISMA. They screened 23 randomised trials from PubMed, Cochrane, and PEDro.
Scientists measured walking speed, 6-minute walk distance, Berg balance, Timed Up and Go, Fugl-Meyer motor scores, ankle motion, stiffness, and daily-living scales. In several low-frequency FES programs (FES is a nichec of   EMS  ) —  used during stepping — those scores rose. Balance in one trial climbed from 15.9 to 46.4. Sit-to-walk time in another fell from 35 to 17 seconds.
That pattern suggests supervised   EMS  can support gait, balance, and easier daily tasks after stroke. The full post lists the trial numbers.https://oriems.fit/blogs/research-digest/ems-after-stroke-23-clinical-trials-review

A 2023 peer-reviewed pilot study tested whether EMS — electrical stimulation — may ease tight biceps after chronic MCA stroke. R. Shaik, K. R. Jyothi, and Prof. Dr. P. Sasikala, M.D., enrolled 11 adults aged 40–60. Five had triceps motor-point EMS. Six had biceps tendon-junction EMS. Both groups did 30 contractions, five days a week, for four weeks.
Scientists measured H-reflex, F/M ratio, and stretch VAS. Both methods improved. Junction EMS led: H-reflex 24.59 to 32.05, F/M ratio 8.46 to 4.99, VAS 8.77 to 5.77 (p < 0.0001).
Those numbers suggest structured EMS may help some stroke arms feel less tight and less painful to stretch. The paper is public and indexed. Read the full post for settings, tables, and limits.https://oriems.fit/blogs/research-digest/ems-stroke-biceps-spasticity-pilot-study
 

In this rigorous meta-analysis, independent university researchers systematically reviewed multiple high-quality randomised controlled trials involving 815 stroke survivors with foot drop.
They focused on real-world outcomes by measuring improvements in walking speed, functional walking distance, and perceived mobility after participants used targeted   EMS  technology or traditional ankle braces for weeks or months.
The pooled evidence showed comparable benefits from both approaches on key daily walking measures.
Published in a respected peer-reviewed journal by UK university scientists, this study provides credible, fact-based support that  EMS  may help stroke survivors walk more effectively.
Readers will gain clear insights into what the research means for practical recovery options and why it matters.https://oriems.fit/blogs/research-digest/ems-stroke-toronto-study-arm-hand

A 2022 Journal of Sport Rehabilitation trial, published by Human Kinetics in the USA, tested EMS on 32 college American football players.
Sixteen added peroneus longus sessions three times a week for five weeks. Sixteen did team training only.
Scientists measured isometric strength in kilograms and one-leg dynamic balance sway. EMS dorsiflexion rose 29.5 to 32.6 kg; controls stayed 32.5. Eversion rose 27.8 to 29.5 kg; controls fell 29.6 to 27. Side sway fell 36 to 30.5 mm/s; controls rose to 40. Group changes differed (P = .039, .027, .030).
That pattern suggests EMS may help footballers and other cutting-sport athletes. Read the full post for the protocol and numbers.https://oriems.fit/blogs/research-digest/ems-ankle-strength-balance-football-study

A Vienna-led trial in Journal of Clinical Medicine tested whether added EMS could support handball throwing.
Fourteen first-league men were randomised. Seven used motion-triggered NMES three times a week for six weeks. Seven copied the same shoulder work without current.
 A blinded tester measured isometric external rotation strength in kilograms and 7 m throwing velocity in km/h.
Every EMS player gained ER strength (+1.4 kg; p = 0.016). All tested EMS players improved endurance throwing velocity (100% vs 29%; p = 0.004).
Peak speed rose in both groups.
Those figures suggest EMS plus training may help tired-arm throwing.
The paper came from Vienna hospitals and New York’s Hospital for Special Surgery.
Read the full post for the tables, protocol, and limits.https://oriems.fit/blogs/research-digest/ems-handball-shoulder-strength-throwing-study

Did you know? 👀 Japanese labs measured this in 2024.
15 young men did two 30-second all-out sprints. Four easy minutes sat between those efforts. One break added 𝑬𝑴𝑺 to light pedalling. The other used matched easy cycling only. That easy load was 𝟒𝟑.𝟔 watts.
Mean 𝒍𝒂𝒄𝒕𝒂𝒕𝒆 hit 𝟏𝟕.𝟒 with 𝑬𝑴𝑺. It hit 𝟏𝟔.𝟐 without it. Peak 𝒍𝒂𝒄𝒕𝒂𝒕𝒆 was 𝟏𝟖.𝟕 versus 𝟏𝟕.𝟒. Sprint 𝒑𝒐𝒘𝒆𝒓 did not fall. Peak power stayed the same. Mean power stayed the same. Fatigue did not rise.
𝒍𝒂𝒄𝒕𝒂𝒕𝒆 is a signal in the blood. Hard efforts make it. It can tell muscle to build more engine. That engine helps the body use oxygen later. 🫁
This test did not time a running race. It did not prove a faster 5K. It did not prove longer easy runs. It showed extra signal. The second sprint still held. ⚡ For runners, that means interval quality can stay high.
Led by 𝑫𝒓 𝑹𝒚𝒐𝒔𝒖𝒌𝒆 𝑻𝒂𝒌𝒆𝒅𝒂. Lab: 𝑪𝒉𝒖𝒌𝒚𝒐 𝑼𝒏𝒊𝒗𝒆𝒓𝒔𝒊𝒕𝒚, Japan. 𝑲𝒚𝒐𝒕𝒐 𝑼𝒏𝒊𝒗𝒆𝒓𝒔𝒊𝒕𝒚 also took part. Published by 𝑻𝒉𝒊𝒆𝒎𝒆, Germany. Journal: 𝑰𝒏𝒕𝒆𝒓𝒏𝒂𝒕𝒊𝒐𝒏𝒂𝒍 𝑱𝒐𝒖𝒓𝒏𝒂𝒍 𝒐𝒇 𝑺𝒑𝒐𝒓𝒕𝒔 𝑴𝒆𝒅𝒊𝒄𝒊𝒏𝒆.
Full post, podcast, original paper, more 𝑬𝑴𝑺 sport studies 👇
https://bit.ly/4gPrJQt