Swimming Injuries: When the Pool Causes Pain

Swimming is often called the safest form of exercise – and that reputation is exactly what gets swimmers hurt. The water removes impact, but it does not remove the 10,000-plus shoulder revolutions a week that competitive swimmers accumulate, nor the chronic postural stress that recreational lap swimmers ignore until pain forces them out of the pool.

Swimming in Malaysia: A Year-Round Sport

Malaysia's tropical climate makes swimming a year-round activity, and the sport enjoys widespread popularity at both competitive and recreational levels. From Olympic-standard facilities at the National Aquatic Centre in Bukit Jalil to community pools in towns across Sabah and Sarawak, Malaysians have ample access to swimming venues.

School swimming programmes, masters swimming clubs, and triathlon training groups contribute to a large and diverse swimming population. However, the repetitive nature of swimming strokes means that overuse injuries are remarkably common, even among casual swimmers.

Swimmer's Shoulder: Subacromial Impingement

Swimmer's shoulder is the most prevalent swimming injury, affecting up to 80% of competitive swimmers at some point in their careers. It refers to subacromial impingement – a condition where the rotator cuff tendons and subacromial bursa become compressed and irritated as the arm moves overhead during each stroke. Given that a competitive swimmer may perform 10,000 to 14,000 shoulder revolutions per week, the cumulative stress on these structures is enormous.

The condition typically begins as mild shoulder discomfort during or after swimming that progressively worsens. Pain is usually felt at the front or side of the shoulder and is aggravated by freestyle and butterfly strokes. Contributing factors include poor stroke technique – particularly hand entry crossing the midline, excessive internal rotation during the pull phase, and inadequate body roll – as well as training volume spikes and weakness in the scapular stabilising muscles.

Physiotherapy management involves a systematic approach. Initial treatment focuses on pain reduction through activity modification and targeted manual therapy. The rehabilitation phase centres on restoring scapular muscle function, strengthening the rotator cuff, and improving thoracic spine mobility.

Serratus anterior and lower trapezius exercises are particularly important for swimmers. Stroke technique correction, ideally in collaboration with a swimming coach, addresses the mechanical causes of impingement.

Breaststroker's Knee: Medial Collateral Ligament Stress

Breaststroker's knee is a condition unique to swimmers, caused by the repetitive whip kick action of breaststroke. The outward rotation and forceful extension of the knee during each kick places significant valgus stress on the medial (inner) structures of the knee, including the medial collateral ligament (MCL) and medial meniscus. Over time, this leads to chronic irritation and pain along the inner knee joint.

Swimmers with this condition report pain during and after breaststroke that eases with rest but returns upon resuming the stroke. Physiotherapy treatment includes temporary modification of kick width and intensity, hip adductor and quadriceps strengthening to improve dynamic knee control, and gradual reintroduction of breaststroke kick with corrected technique. In some cases, swimmers may need to reduce breaststroke volume permanently and increase other strokes in their training mix.

Neck Pain from Breathing Technique Errors

Neck pain is a frequently overlooked swimming injury that commonly affects recreational swimmers in Malaysia. The primary cause is excessive cervical rotation and extension during breathing in freestyle, often resulting from insufficient body roll. When a swimmer lifts or over-rotates the head to breathe – rather than allowing the body to roll so the mouth clears the water naturally – repetitive strain accumulates in the cervical spine muscles and joints.

Physiotherapy assessment addresses both cervical spine mobility and swimming technique. Treatment includes cervical joint mobilisation, deep neck flexor strengthening exercises, and thoracic extension mobility work. Breathing technique correction is essential for long-term resolution – swimmers should aim for the head to remain in a neutral position with one goggle lens remaining in the water during the breathing phase of freestyle.

Lower Back Pain in Butterfly Swimmers

The undulating body movement of butterfly places repetitive extension and flexion forces through the lumbar spine, making lower back pain a common complaint among butterfly specialists. The dolphin kick requires coordinated spinal motion, and any weakness in the core stabilising muscles amplifies the compressive and shear forces on the lumbar discs and facet joints.

Effective prevention and treatment revolve around core stability training. Exercises such as the dead bug, pallof press, and bird-dog target the deep stabilisers – transversus abdominis, multifidus, and pelvic floor muscles – that protect the spine during dynamic movement. Swimmers should also incorporate hip flexor stretching and thoracic mobility work to reduce compensatory lumbar movement.

Dryland Training: Building Resilience Out of the Water

Dryland exercises are a vital component of injury prevention for swimmers. A well-designed dryland programme performed two to three times per week should include resistance band shoulder exercises targeting external rotation and scapular retraction, core stability work progressing from static holds to dynamic anti-rotation exercises, hip and gluteal strengthening for kick power and knee protection, and thoracic spine mobility drills. Malaysian swimmers training in warm pool environments should pay particular attention to post-swim stretching and cool-down routines, as muscles that have been working in heated water may stiffen rapidly once out of the pool.

Struggling with Shoulder Pain? A physiotherapist can assess your condition and create a personalised recovery plan. Chat with a physiotherapist near you