Tongue Strengthening Exercises for Dysphagia in HK

The tongue is the primary driver of the oral phase of swallowing. Reduced tongue strength — common after stroke, in Parkinson’s disease and following head and neck cancer treatment — results in incomplete bolus formation and propulsion, prolonged meal times and elevated aspiration risk. This guide describes the tongue strengthening protocols used by Hong Kong SLTs, adapted for structured home practice under professional supervision.

The Tongue’s Role in Swallowing

Swallowing is conventionally divided into four stages. The tongue is central to two:

Oral preparatory stage: The tongue mixes food with saliva and shapes it into a cohesive bolus

Oral stage: The tongue generates pressure against the hard palate, propelling the bolus posteriorly toward the pharynx

When tongue strength or range of motion is compromised, residue accumulates in the mouth and pharynx, increasing the risk of aspiration after the swallow is completed.

Important: SLT Supervision Required

All exercises in this guide must be prescribed and monitored by a registered SLT. Referral is available through the Hospital Authority General Outpatient Clinic (GOPC) or any inpatient ward team. Private SLT practices are listed in the HKSTA directory.

Tongue Strengthening Exercises

1. Tongue Resistance Training

Target: Increases tongue strength in multiple planes of movement

Equipment: Tongue depressor or clean wooden spoon

Movement A — Anterior resistance

1. Place the tongue depressor in front of the tongue tip
2. Push the tongue tip outward against the depressor; hold 5–10 seconds
3. Relax; repeat 10 times

Movement B — Lateral resistance

1. Place the depressor against the left cheek, inside the mouth
2. Push the tongue laterally to the left; hold 5 seconds
3. Repeat on the right side; 10 repetitions per side

Movement C — Anterior elevation

1. Place the depressor against the hard palate just behind the upper front teeth
2. Push the tongue tip upward against the depressor; hold 5–10 seconds
3. Repeat 10 times

2. Tongue Base Retraction Exercise

Target: Strengthens tongue base–posterior pharyngeal wall contact, improving posterior bolus propulsion

Technique:

1. Produce the sound “ga” repeatedly — notice the posterior tongue pulling up and back
2. Alternatively, simulate sucking through a wide straw, drawing the tongue base up and back
3. Hold the retracted position for 3–5 seconds; repeat 10–15 times

3. Maximum Isometric Pressure Training (IOPI-Based Principle)

Target: Increases maximum tongue pressure against the palate — the key measurable parameter in IOPI assessment

Some HA hospitals and private SLT clinics in Hong Kong use the Iowa Oral Performance Instrument (IOPI) to quantify tongue pressure precisely. For home practice without the device:

1. Use a clean soft therapy ball approximately 3 cm in diameter (or the ball provided by your SLT)
2. Place the ball between the tongue and the hard palate
3. Squeeze the ball upward toward the palate with maximum tongue force; hold 3 seconds
4. Release and rest; repeat 10 times, 3 sets per day

Ask your SLT whether an IOPI-based assessment is available at your clinic for an objective baseline measurement.

4. Tongue Range of Motion Exercises

Target: Maintains the full range of tongue movement needed for effective swallowing and speech

Sequence (hold each position 3–5 seconds, repeat 5 times):

1. Protrude the tongue forward as far as possible
2. Move the tongue to the left corner of the mouth
3. Move the tongue to the right corner of the mouth
4. Elevate the tongue to touch the upper lip
5. Lower the tongue toward the chin
6. Run the tongue along the inner gum line clockwise, then counter-clockwise

Progress Indicators After 4 Weeks

Objective and subjective signs of improvement to note in the exercise log:

• Reduced oral residue observed after meals
• Shorter overall meal duration
• Improved speech clarity (tongue strength and articulation are directly related)
• Reduced need for throat clearing during and after meals

Tongue Function and IDDSI Diet Level

Tongue strength directly influences the appropriate IDDSI food texture level. As tongue function improves with training, diet level advancement should be guided by formal SLT re-assessment:

Tongue Assessment Services in Hong Kong

Several HA hospitals and private SLT practices offer instrumental tongue assessment using the IOPI or similar pressure transducer devices. This provides an objective strength baseline and tracks improvement quantitatively over the training period. Ask your SLT whether this service is available in your cluster.

Tongue strengthening is a central pillar of dysphagia rehabilitation. With consistent home practice and regular SLT review, meaningful functional gains in tongue strength are achievable within weeks to months for most patients.