Activity profile and physiological responses of Korean amateur football referees during matches.
Youngin Choi, Jungsuk Roh
PMID 29545712WHAT IT FOUND
High-school referees covered 6,719 m and college referees 7,547 m during matches.
Blood lactate was 5.0 and 5.9 mmol after the first and second halves for high-school referees; college values were 5.2 and 6.4 mmol. This reports match demands, not treatment effects.
Key findings
01High-school referees covered 6,719 m total, with 3,180 m in the first half and 3,539 m in the second half.
02College referees covered 7,547 m total, with 3,625 m in the first half and 3,922 m in the second half.
03Blood lactate concentration was 5.0 mmol and 5.9 mmol after the first and second halves for high-school referees, and 5.2 mmol and 6.4 mmol for college referees.
STILL TO COME
How it was doneWhat they found
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What it does not show
Only 30 referees were measured, so the results may not apply to other referee groups. The study did not involve patients, therapy, or any training programme, so it does not support clinical treatment decisions. Lactate samples were taken only after each half, so they cannot show what happened during the whole half. The referees were amateur high-school and college officials in Korea in 2017, so demands may differ in other leagues or countries.
Declared interests
Hanseo University supported the research, and the authors declared no conflict of interest.
The easy way to misread this
Do not read these match demands as evidence that a training programme improves performance or patient outcomes. The study measured 30 referees during normal games and did not test an intervention.