Progressive decrease in leg-power performance during a fatiguing badminton field test.
Heping Huang, Uraiwan Chatchawan, Wichai Eungpinichpong and 1 others
PMID 31645803WHAT IT FOUND
In 15 male badminton players, peak power fell 35.49% by the final set of a five-set fatiguing shuttle-run test.
Blood lactate rose from 2.82 to 16.07 mmol/L.
Key findings
01Peak mechanical power decreased across five badminton field-test sets, reaching 3,031.39 W after set five, with a reported 35.49% reduction.
02Vertical jump height decreased across the sets, reaching 36.60 cm after set five from 63.98 cm before testing.
03Blood lactate increased from 2.82 mmol/L before the field test to 16.07 mmol/L after it.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The study included only 15 male non-elite badminton players, so it does not show what would happen in female players, elite players or people with health conditions. The test was performed in non-elite badminton players, not patients, so it does not show how the result applies to people in rehabilitation. Participants stopped each set when they felt unbearable fatigue, so the amount of work before fatigue differed between players. Peak power was calculated from jump height and body mass, not measured directly from the quadriceps. The paper reports a single-group repeated test, so it does not compare this protocol with another fatigue test or a no-fatigue condition.
Declared interests
Funding was provided by the Research Center in Back Neck and Other Join Pain Research Group, Khon Kaen University, Thailand. The authors declared no conflict of interest.
The easy way to misread this
Do not read the 35.49% power loss as a treatment effect or a clinical target for patients. It was measured in 15 male non-elite badminton players during a maximal on-court fatigue test, not in people receiving therapy.