STRENGTH · EQUIPMENT-FREE · AGES 8-18

Streamline & Bracing Endurance Assessment

Three stopwatch stations describe how long an athlete can maintain a defined prone streamline, plank or push-up position, and wall-sit streamline under continuous breathing.

PRIMARY OUTPUT

Hold time and stop reason

EQUIPMENT

Stopwatch, wall and floor

IMPORTANT LIMIT

Not peak force or RFD

COACH PROTOCOL

Standardized administration

Use the same warm-up, station order, surface, instructions and test variant. Give one familiarization trial when the position is new. Record time to the first defined technique failure; do not use unverified age targets as pass/fail standards.

01
Prone streamline hold
Lie prone with legs long, toes pointed and hands stacked overhead. On start, lift arms and upper chest only to a comfortable controlled height; legs may lift slightly without knee bend. Stop when hands/chest return, knees bend, alignment changes after one cue, breathing is held or symptoms occur.
02
Upper-body bracing hold
Foundation variant: straight-arm high plank. Advanced variant: 90-degree push-up hold only when the athlete can attain it safely. Keep head-trunk-heel alignment and breathe. Record the exact variant; never compare scores between variants.
03
Wall sit with streamline arms
Back against wall, feet set consistently, hips and knees near 90 degrees. Reach arms overhead into the best pain-free streamline without forcing wall contact. Stop for leg-position failure, foot movement, loss of the recorded arm standard or symptoms. Score as a composite position-endurance task.
04
Record and retest
Record seconds, variant, developmental band (8-11, 12-14 or 15-18), technique stop and symptoms. Compare primarily with the same athlete under the same protocol.

PRINTABLE FORMS

Use the controlled packet

The coach packet includes setup, scoring, stop rules, a multi-athlete sheet, interpretation boundaries and hot research links.

Download Complete Packet PDF · 4 pages Download Recording Sheet PDF · 1 landscape page Athlete Testing Overview Preparation and safety

INTERPRETATION

Time is useful only with position quality.

Report all three station times separately; do not create an unsupported universal score.
Age bands organize the roster; they are not validated pass/fail norms.
A position change ends the attempt even if the athlete could continue in a different shape.
The wall-sit station intentionally combines lower-body endurance with overhead-position maintenance.
Do not infer swimming speed, wall-push force, pain risk or a specific weakness from one hold.

SCIENTIFIC JOURNALS

Supporting evidence and limits

Evidence supports youth supervision and the feasibility of timed plank assessment in children, but the complete three-station swimmer protocol is a TEAMGOLDUSA field battery and does not have validated universal norms.

COMMON QUESTIONS

Streamline & Bracing Endurance Assessment FAQ

Why are the proposed age targets not shown?

The exact target ranges supplied were not traceable to validated youth-swimmer norms. TEAMGOLDUSA records age bands and builds internal reference ranges only after enough standardized data are collected.

Can an 8-year-old use the 90-degree hold?

The default foundation variant is a high plank. Use the 90-degree hold only when an appropriately supervised athlete demonstrates safe, repeatable control.

Does the wall sit measure turn power?

No. It records time maintaining a combined leg and overhead position; it does not measure force, impulse or wall-push performance.

Should athletes hold their breath?

No. Continuous controlled breathing is required, and breath-holding ends the attempt after a clear cue.

Stop criteria and scope

Test only pain-free athletes under direct supervision. Require continuous breathing. Stop for pain, dizziness, chest symptoms, unusual shortness of breath, numbness, tingling, loss of safe control or any individualized restriction. This is not medical clearance or diagnosis.