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DRMUSCLE STIMULATOR (NMES) – A Quick Clinical Guide for Physio Students 👩⚕️💡
If you’re using a muscle stimulator just to “contract the muscle,” you’re missing the whole point.
Here’s what every physiotherapy student MUST know:
🔹Frequency Selection
• 20–50 Hz → For muscle strengthening
• 50–80 Hz → Stronger contractions (athletic training)
• <20 Hz → Muscle re-education / twitch contraction
🔹 Pulse Duration
• 150–250 µs → Small muscles
• 250–400 µs → Large muscles (quadriceps, hamstrings)
🔹 On : Off Time (Duty Cycle)
• 1:3 or 1:5 → To prevent muscle fatigue
Example: 10 sec ON : 30–50 sec OFF
🔹 Ramp Time
• 1–3 sec → Smooth contraction & relaxation
(Improves patient comfort)
🔹 Intensity
• Enough to produce a visible muscle contraction
(Not just tingling—actual contraction is the goal)
🔹 Important Clinical Rules
✔ Proper electrode placement (motor points)k
✔ Avoid excessive fatigue
✔ Monitor skin condition
🔹 Contraindications
❌ Pacemaker
❌ Pregnancy (over abdomen/lumbar)
❌ Malignancy
❌ Impaired sensation / open wounds
📌 Muscle stimulator is not just about “giving current.”
It’s about muscle re-education, strengthening & functional recovery.
📌 follow @dr.chetnaphysio for more electro therapy guides.
📌 Share this with your physio friends 🙌🏻
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