Judo is the Olympic sport where a win by choke (shime waza) is legal — yet clinical effects of choking practice are poorly mapped. We validated the authorial Quasi-Apparatus Shime Waza Test (QASWT) in twenty juvenile judoka (14 boys, 6 girls; 10.7 ± 0.73 years).
Protocol in plain language
Trial 1 (progressive): an experienced instructor applied kata-juji-jime while counting from “121” to “125” as strength increased; tapping out or faint signs stopped the clock. Trial 2 applied each athlete’s determined strength from the start. Indicators: FSW (1–5), tolerance time tTSW, and Shime Waza Index SWI (0–1 relative to 5.99 s).
Validity and reliability
Five competent judges reached full Delphi agreement (high accuracy). SWI fell from progressive to constant trials as expected (test SWIprogres 0.83 ± 0.20 → SWIcorrect 0.69 ± 0.25). Test–retest: FSWprogres r = 0.973, tTSWprogres 0.917, SWIprogres 0.894 (all p < 0.01). Some correct-trial correlations were lower yet still usable for this diagnostic class.
Ethics first
The method is framed to meet medical and ethical safety standards for people who train shime waza. Any therapeutic use (fear reduction, stress tolerance) demands interdisciplinary teams — medicine, physiotherapy, agonology/judo, psychology — not garage experiments. Crossref has no DOI; cite volume/pages and the Arch Budo abstract.
Shime Waza Index normalises tolerance time to a 5.99-second constant so scores stay comparable across kids. Progressive versus constant-strength trials separate “how hard before tap” from “how long at known hard”. That dual view is why the tool claims prophylaxis and therapy potential beyond sport ranking.
Juvenile sample (10–12) means any clinical extension needs paediatric ethics, medical oversight and clear stop rules — the paper insists on interdisciplinary cooperation including medical biotechnology where relevant.
No Crossref DOI: cite Archives of Budo 2018;14:143–157 and keep the archbudo abstract link in your syllabus.
Shime Waza Index normalises tolerance time to a 5.99-second constant so scores stay comparable across kids. Progressive versus constant-strength trials separate “how hard before tap” from “how long at known hard”. That dual view is why the tool claims prophylaxis and therapy potential beyond sport ranking.
Juvenile sample (10–12) means any clinical extension needs paediatric ethics, medical oversight and clear stop rules — the paper insists on interdisciplinary cooperation including medical biotechnology where relevant.
No Crossref DOI: cite Archives of Budo 2018;14:143–157 and keep the archbudo abstract link in your syllabus.
Where this sits in the lab
Biokineticum’s public notes exist so practitioners can reach the DOI without drowning in jargon — and so athletes, teachers and clinicians see that combat-sport science also publishes on prisons, faith, fair play, sauna physiology and disability policy. Soft topics still deserve hard methods: sample sizes, instruments, effect directions and explicit limits.
If you teach, treat or coach from these findings, copy the reference list into your syllabus, open the full text, and write down what you will measure next week. That is the only CTA that always fits.
Reading notes
Psychosocial and public-health papers describe associations in defined samples — not moral verdicts about individuals. We keep the language descriptive, avoid stigma, and point you to the DOI for methods and limits.
If the topic touches your clinic, classroom or programme design, treat this post as a map to the paper, not a substitute for it.
References
- Oleksy M, Kalina RM, Mosler D, Jagiełło W. Quasi-apparatus shime waza test (QASWT) – validation procedure. Archives of Budo. 2018. 14:143-157. Full text / abstract
Measurement-led biomechanics, health psychology and clinical tools at Biokineticum.
