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Health Care, Medical

Discussion And Analysis Of The Arm Stroke

Breaststroke is a type of swimming style where the swimmer glides and uses the breast, whereas else the trunk does not rotate. The head is usually online with the trunk and also floats over water for a long hence a comfortable but slow style for swimming.

The swimmer lies horizontally on the water’s surface, gliding on the chest. The arms extended forward, hands together, and palms facing downward. The arms are turned sideways, away from the shoulders, keeping the arms straight and the elbow close to the water’s surface. Flexing the arms at the elbow moves the forearm and palms backward, vertically, and facing downwards. The wrist is also supinated. The propulsive phase begins by exerting force and moving the arms backward, then inwards and upwards. This enables one to sweep diagonally, raising the head and shoulders above the water level. The hip also goes down, and the legs move closer to the buttocks. The elbows should be lateral and in a higher position than the hands but at a lower position than the shoulders.

During the recovery phase, the head submerges again into the water, the hands are moved beneath the chest, and the elbows against the thorax. With the hands together, they are projected forward close to the water surface until the arms are fully extended forward, ready for another cycle. Shoulders are abducted horizontally, bringing the elbows together and the palms facing each other. The legs will help to kick forward.

Propulsive phase anatomical analysis table

Joint Joint action Segment moved Force for movement Muscle active Kind of contraction
Shoulder

Joint

Shoulder

girdle

Elbow

Radioulnar

Wrist

Fingers

Extension

Internal rotation

Abduction and

Flexion

Flexed and later extension

Flexed

vertical position beneath the chest

Facing each other

Scapula

Scapula

Forearm

forearm

Forearm

forearm

Muscle

Muscle

Muscle

muscle

Muscle

Muscle

Triceps branchial

Branch radial

Brachialis

Bicep branch

Latissimus dorsi

Pectoralis major

Concentric

Concentric

Concentric

concentric

static

static

Recovery phase anatomical analysis table.

Joint Joint action Segment involved Force for movement Muscle active Kind of contraction
Shoulder joint

Shoulder girdle

Elbow

radioulnar

Wrist and fingers

Abduct horizontally

rotated

Extension squeezing the elbows together

protonate

Protonate

The palm face downwards

Upper arm

Scapula

Forearm

Forearm

Muscle

Muscle

Muscle

Muscle

Triceps branch

Anterior of deltoid

Coracobrachialis

Clavicular head of pectoralis

Concentric

Concentric

Concentric

Concentric

Attached is a video from YouTube doing breaststroke

Work Cited

Guignard, Brice, et al. “KNEE AND ANKLE MUSCLES COACTIVATIONS IN BREASTSTROKE SWIMMING KICK AND RECOVERY: EXPLORATORY APPROACH.” ISBS-Conference Proceedings Archive. Vol. 33. No. 1. 2016.

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