Die Evidenz hinter
dem myoact EMG-System.
Ein strukturierter Überblick über wichtige Studien zu neuromuskulären Dysbalancen, Aktivierungsdefiziten und Effektstärken von EMG-Biofeedback — von Rückenschmerz bis zur Neurorehabilitation.
ICC 0,940
Hohe Test-Retest-Reliabilität
Validierung an oberflächlichen Muskelgruppen (Burandt 2025)
UT:LT 3,15
Erkennung neuromuskulärer Dysbalancen
quantifiziert Scapula-Dyskinesie bei Impingement (Smith 2009)
g = 0,60
Positive Wirkung EMG-Biofeedback
Schmerzreduktion bei CLBP, stabil nach 8 Monaten (Sielski 2017)
60,6 %
Relevanz für die klinische Entscheidung
EMG verändert Behandlungspfad bei Patienten (Krause 2020)
Studien-Archiv
10 Studien gefunden
Variation in medial and lateral gastrocnemius muscle activity with foot position.
External foot rotation (toe-out) significantly increases MG activation over LG in both standing and prone tasks. Toe-in shows no significant MG-LG difference, failing to isolate LG as hypothesized. Descriptively, MG activity was numerically higher than LG across all positions, though not always statistically significant.
CONCLUSION
Clinical rehabilitation and calf training programs should incorporate toe-out positioning to specifically target MG activation. EMG feedback could additionally support this by helping visualize and monitor MG/LG activation patterns, including LG activation, which is otherwise difficult to isolate through foot position alone.
CONCLUSION
Clinical rehabilitation and calf training programs should incorporate toe-out positioning to specifically target MG activation. EMG feedback could additionally support this by helping visualize and monitor MG/LG activation patterns, including LG activation, which is otherwise difficult to isolate through foot position alone.
Effects of Lower Trapezius Strengthening Exercises on Pain, Dysfunction, Posture Alignment, Muscle Thickness and Contraction Rate in Patients with Neck Pain; Randomized Controlled Trial.
RCT with 40 neck pain patients (20 control/20 experimental) added lower trapezius strengthening to a standard scapula and thoracic stabilization program. Both groups improved in pain and disability, but the experimental group showed greater gains in neck disability, postural alignment, lower trapezius thickness and contraction, potentially by restoring upper/lower trapezius balance.
CONCLUSION
Integrating lower trapezius strengthening into clinical training protocols for neck pain patients is recommended, with additional monitoring of the upper/lower trapezius imbalance to track progress and guide improvement.
CONCLUSION
Integrating lower trapezius strengthening into clinical training protocols for neck pain patients is recommended, with additional monitoring of the upper/lower trapezius imbalance to track progress and guide improvement.
Single-Session Video and Electromyography Feedback in Overhead Athletes With Scapular Dyskinesis and Impingement Syndrome
In a single-session study in overhead athletes (N=41) with SIS and scapular dyskinesis, EMG biofeedback increased lower trapezius activity and decreased the UT/LT ratio more than video feedback. Video feedback produced greater correction of scapular upward rotation. Each strategy targets a different aspect of the dysfunction.
CONCLUSION
EMG feedback training appears to be an effective tool within a session for increasing muscle activation and correcting imbalance patterns in SIS, showing positive effects from real-time UT/LT ratio feedback. With repeated training, such feedback could potentially translate into longer-term improvement.
CONCLUSION
EMG feedback training appears to be an effective tool within a session for increasing muscle activation and correcting imbalance patterns in SIS, showing positive effects from real-time UT/LT ratio feedback. With repeated training, such feedback could potentially translate into longer-term improvement.
Efficacy of electromyographic biofeedback and electrical stimulation following arthroscopic partial meniscectomy: a randomized controlled trial
EMG biofeedback vs. electrical stimulation for rehab after arthroscopic meniscectomy (N=45, 3 groups of 15: home exercise, biofeedback, stimulation). Biofeedback shortened walking-aid use overall and, at 2 weeks, improved Lysholm scores versus home exercise and produced greater VMO/VL contraction power versus both other groups. Electrical stimulation showed no significant advantage.
CONCLUSION
Together, the reduced walking-aid time, enhanced knee extensor function, and better Lysholm scores demonstrate that EMG biofeedback can meaningfully speed up functional recovery after knee surgery. Even a short, 2-week intervention was effective when started immediately after surgery.
CONCLUSION
Together, the reduced walking-aid time, enhanced knee extensor function, and better Lysholm scores demonstrate that EMG biofeedback can meaningfully speed up functional recovery after knee surgery. Even a short, 2-week intervention was effective when started immediately after surgery.
Evaluating the Effectiveness of sEMG Biofeedback for Posture Training and Scoliosis Management
In 25 adolescents with mild scoliosis, 30 weekly sessions of sEMG biofeedback posture training were associated with more balanced paraspinal activity, most notably in the latissimus dorsi and thoracic erector spinae, while average Cobb angle changes stayed below the 5° progression threshold. Without a control group, causality remains unclear (training vs. natural growth).
CONCLUSION
Since subjects with less balanced latissimus dorsi and lumbar erector spinae activity showed greater curvature worsening than those with better balance, this points to sEMG biofeedback posture training as a promising addition to conservative management in adolescents with AIS, pending confirmation in larger controlled trials.
CONCLUSION
Since subjects with less balanced latissimus dorsi and lumbar erector spinae activity showed greater curvature worsening than those with better balance, this points to sEMG biofeedback posture training as a promising addition to conservative management in adolescents with AIS, pending confirmation in larger controlled trials.
Efficacy of Electromyographic-Biofeedback Supplementation Training with Patellar Taping on Quadriceps Strengthening in Patellofemoral Pain Syndrome among Young Adult Male Athletes
EMG-biofeedback for PFPS in 60 young male athletes divided into two groups: patellar taping during isometric quadriceps training vs. sham biofeedback, over 4 weeks (5x/week). The experimental group showed earlier pain relief (Week 2), followed by greater strength (Week 4) and better knee function (Week 6) than control, suggesting biofeedback's benefits build gradually rather than immediately.
CONCLUSION
This suggests EMG feedback is a valuable addition to conservative PFPS rehabilitation, as it not only reduces pain but also restores underlying strength and functional deficits rather than masking symptoms alone.
CONCLUSION
This suggests EMG feedback is a valuable addition to conservative PFPS rehabilitation, as it not only reduces pain but also restores underlying strength and functional deficits rather than masking symptoms alone.
Neurophysiological, balance and motion evidence in adolescent idiopathic scoliosis: A systematic review
EMG studies (n=14/61) in AIS predominantly reveal increased convex-side activity in intrinsic spinae muscles during exercises/arm elevation, though some found no side differences. EMG biofeedback (n=1) improved paraspinal symmetry; bracing showed only partial effects on muscle activity. Greater methodological standardization (EMG protocols, within-group analyses) would strengthen future findings.
CONCLUSION
EMG can be used to identify imbalances in intrinsic spinae muscle activity. Preliminary evidence suggests that EMG biofeedback may contribute to improved muscular symmetry, though the evidence base remains limited and inconsistent.
CONCLUSION
EMG can be used to identify imbalances in intrinsic spinae muscle activity. Preliminary evidence suggests that EMG biofeedback may contribute to improved muscular symmetry, though the evidence base remains limited and inconsistent.
Reliability of the myoact® Cometa EMG sensors based on physiotherapeutic exercises
Examination of sEMG test-retest reliability across multiple muscle groups during functional movement tasks using Myoact® Cometa sensors. Superficial muscles (trapezius ascendens, rectus femoris, vastus medialis/ lateralis, gluteus medius) showed the highest reliability. Trapezius descendens and the hamstring muscles yielded weaker, more variable results.
CONCLUSION
Myoact® Cometa sensors proved reliable for superficial muscles under standardized, SENIAM-based conditions, making them suitable for use in athletic performance testing or monitoring physiotherapy progress. However, attention should be paid to task-specific variability and challenges in electrode placement for deeper or more complex muscles.
CONCLUSION
Myoact® Cometa sensors proved reliable for superficial muscles under standardized, SENIAM-based conditions, making them suitable for use in athletic performance testing or monitoring physiotherapy progress. However, attention should be paid to task-specific variability and challenges in electrode placement for deeper or more complex muscles.
Axioscapular and neck extensor muscle behavior during isometric shoulder exertions in patients with nonspecific neck pain with and without a scapular downward rotation posture
sEMG on UT/LT/SA/NE in 90 participants (30 control, 30 neck pain with SDR, 30 without) during isometric shoulder tasks at 20/50/100% MVC. SDR group revealed increased UT activity and greater UT/LT, UT/SA ratios at low force levels. Both neck pain groups showed higher NE activity. Together, these findings suggest impaired axioscapular and neck motor control.
CONCLUSION
Supports the fact that SDR-related muscle imbalance (increased UT activity/ ratios) reflects a motor control issue, not a strength deficit (appears only at low force, not 100% MVC). Training suggestion: target motor control/ coordination of axioscapular muscles at low-to-moderate loads. For treatment and evaluation, both neck and axioscapular muscles should be involved.
CONCLUSION
Supports the fact that SDR-related muscle imbalance (increased UT activity/ ratios) reflects a motor control issue, not a strength deficit (appears only at low force, not 100% MVC). Training suggestion: target motor control/ coordination of axioscapular muscles at low-to-moderate loads. For treatment and evaluation, both neck and axioscapular muscles should be involved.
Determining Acceptable Range of Surface Electromyogram Electrode Placement Variation for Deltoid Muscle Using Euclidean Distance Function
Electrode repositioning between sessions (repeated attach/reattach) introduces location uncertainty at the muscle belly, causing sEMG amplitude to vary even under comparable contraction conditions. When electrodes were shifted 1 cm from baseline, reference similarity (Euclidean distance) remained at 76.4–93.9; 77.7–95.4; 76.0–92.3% per subject (≥90% in the best case).
CONCLUSION
A 1 cm placement variability seems like a usable tolerance range for repeated sEMG sessions, relevant for rehabilitation progress tracking (e.g., post-stroke rehab) without placement-induced signal distortion.
CONCLUSION
A 1 cm placement variability seems like a usable tolerance range for repeated sEMG sessions, relevant for rehabilitation progress tracking (e.g., post-stroke rehab) without placement-induced signal distortion.