Blog: telerehabilitation, lab software, research

Notes from the lab and the clinic: how we measure movement at home, how we parse mixed-vendor reports, and what the published papers actually showed. Research articles stay on their original URLs; new posts live here.

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New posts

August–September 2026

Is remote physiotherapy as good as in-person? What the reviews say

Systematic reviews find PT-led exercise telerehabilitation often non-inferior to face-to-face care for function, QoL and satisfaction — and how Biokineticum’s live PT + markerless model fits that frame.

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Markerless range of motion and balance from a home webcam

YOLOv8 on a home webcam for joint range of motion and a live sway map. Encrypted messengers, no LLM, 45 minutes from about 25 USD.

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One dataset from Biodex, Noraxon, Humac and force-plate PDFs

A native desktop tool that extracts Biodex, Noraxon, Humac and force-plate PDF/CSV reports into one multi-sensor dataset — local RAG, offline, GDPR-minded.

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High-g IMU strike diagnostics — and Perception Neuron 3 as the reference

Open high-g IMU hardware (up to 200 g) for combat-sport strikes, firmware and Python, next to Noitom Perception Neuron 3 as a portable reference system.

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PhysioSim: orthopaedic tests, imaging, and a diagnostic-accuracy report

A Telegram Mini App for physiotherapy students: history, Lasègue, Phalen, Tinel, Lachman, imaging, and an automatic diagnostic-accuracy report.

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From the lab / ORCID series

Popular explainers of peer-reviewed papers — ORCID series, 9 September 2026

Side kick vs turning kick: what gender, height and weight actually change

Side kicks outscore turning kicks on a force plate (p<0.001). Gender, mass and height enter the model — some trained women still beat some men.

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What drives kicking strength in female taekwon-do athletes?

Five elite women, 100 kicks: side kick mean peak ~1770 N vs turning ~1379 N. Effective mass ~85% of body mass on the side kick.

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Kicking force: aggression, sex and age — what actually predicted

Pilot on 30 athletes: sex and age explained total kicking force (R²=0.53). BPAQ aggression was not a significant predictor.

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How much of your body mass actually arrives in a TKD kick?

Median force ~2662 N (turning) vs ~4596 N (side). Effective mass ~20% vs ~73% of body mass — technique, not scale weight.

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Men, women, and the effective mass of a taekwon-do kick

Nine black belts on plate + IMU: large force gaps between turning and side kicks; sex shapes how effective mass is utilised.

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Case studies: side kicks hit the plate harder than turning kicks

Four elite men, 80 kicks: side kick resultant ~4429 N vs turning ~2649 N. Left–right turning kicks similar.

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Not only the foot: core and arm velocities in the roundhouse kick

Thirteen elites kicking a table-tennis ball: sternum and opposite-shoulder max velocities differed by side; correlations with toe speed were side-specific.

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Cervicothoracic pain in nurses: trigger points beat classic massage

RCT in 24 women hospital staff: ischemic-compression trigger-point care outperformed classic massage on NDI, VAS and Laitinen scores.

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Facial nerve palsy: what six weeks of KT added to standard rehab

27 patients (15 KT + standard rehab, 12 control): House-Brackmann −39.15% with KT vs −24.61% without.

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Effective distance: when peak punch velocity arrives too early

Black-belt case: punches 6.20–8.01 m/s. Best momentum transfer near 1.12–1.73% effective distance; later peaks nearly halved ball velocity.

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Same front kick, different targets: gender changes the answer

Vicon study: gender, leg and target all change front-kick speed (p<0.001). Men responded more to a board; women to a small ball.

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Forms are measurable: IMU diagnosis of saju-jirugi

Case study: fist IMUs during saju-jirugi. Striking punch max velocity fell 11.68→8.55 m/s; opposite hand retract peaked at 12.67 m/s (r=0.65).

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Straight punches transfer more effective mass than hooks — even when hooks feel harder

30 male boxers, four techniques: cross Me 31.17±16.20 kg, jab 30.39±15.09 kg; hooks ~12–14 kg despite higher fist acceleration.

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ORCID series — batch 2

Psychosocial, public-health, judo diagnostics and remaining gaps — 9 September 2026

Addicted vs non-addicted male prisoners: what a pilot actually measured

Pilot in a semi-open facility (n=47): physical and questionnaire scores did not separate addicted from non-addicted men at p>0.05 — caution, not a blank cheque.

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Balance behind the fence: addiction history and postural sway

Same cohort as the psych-profile pilot: addiction history linked to more irregular sway on harder balance tasks — a rehab signal, not a sentence.

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Faith, practice and self-rated health on the Poland–Ukraine borderlands

n=1458 across Podkarpacie, Lesser Poland and Lviv region (Jan–Apr 2022). Believers rated physical health highest; non-believers mental health — ANOVA showed faith-linked differences.

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Sense of coherence, pain strategies and healthy habits in TKD athletes

SOC scores: men 36.83±12.45 vs women 33.17±10.60. Diverting attention from pain correlated with reinterpretation (r=0.75).

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Validating a Fair Play questionnaire for Ukrainian adolescents

450 + 490 + 725 respondents across age bands. Four scales: Respect, Convention, Gamesmanship, Cheating — ready for PE evaluation.

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Meaningfulness, training camps and anxiety in elite TKD fighters

SOC-29 meaningfulness + STAI in elites: engaged camp participation tracks with lower anxiety — salutogenic, not soft.

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Four sauna rounds: what actually moved in young active men

72 min protocol in regular sauna users: HRavg 102.5 bpm, HRpeak 143.3; significant BP drop; no chaotic breakdown of homeostasis.

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Student anxiety in COVID: support helped, scores still ran high

Pandemic STAI above reference means; nutrition habits and university context partially predicted anxiety — multifaceted, not a single lever.

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Male students in COVID: diet attention, support and anxiety models

Companion to the mixed-sex IJERPH paper: in men, pro-health eating attention and strong support entered significant anxiety models (R≈0.39–0.41).

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Karate on the way to school: preschool girls and readiness

Ido 19(2):12–20 with Pavlova, Bodnar, Ortenburger, Wąsik: martial-arts PE as a bridge toward school demands for girls — open the DOI for full methods.

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Mutual learning in PE: Ukrainian students’ health indicators moved

Male/female experimental groups (n≈31–33) vs controls: Ketle, Robinson, lifetime and strength indices plus Schultz–Platonov mental work — PE as pedagogy, not only sweat.

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QASWT: measuring choke tolerance safely in young judoka

No DOI in Crossref; Arch Budo 14:143–157. Progressive vs constant kata-juji-jime with SWI indices — prophylaxis/therapy tool under medical-ethical standards.

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Judo is underused as public-health method — agonology says why

Brazil/Poland/Japan lead judo publishing; ~84% in science-tech and life-science bins. Therapy of mental disorders is occasional — a call, not a miracle claim.

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Falls are extreme events for people with mental disorders

Physiotherapy lens: different diagnoses, similar high fall-risk profile — prevention must be lifelong, not a six-week module.

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Flexibility tests for judo health training: what survived validation

Eight recreational judoka, three training states: recommend SASRT (+ self-perception); FFD usable; SABS fails standards — two overlapping papers, one guide.

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Hitting a wall on purpose: the 65-year-old amortised better

External push into a concrete wall from 2 m: both shielded the head; man A absorbed ~77% of collision energy in tissues vs ~91% for man B.

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Martial arts bibliotherapy: reading as aggression therapy support

Combined popular note on two overlapping 2015 texts: literature of struggle as a tool beside cognitive-behavioural work — not a substitute for clinical care.

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ICF points, physiotherapists and Poland’s support benefit

False-positive “covered” on the site before — dedicated note now. Musculoskeletal and neurological disabilities dominate older applicants.

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One master, four techniques: effective mass is not the force ranking

Dedicated popular post for DOI 10.16926/par.2023.11.02 — force plate + foot IMU; Me = Fmax/a; effect-of-force highest on roundhouse.

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Paralympic Karate rules: from 3 grades to functional video scoring

Matsui, Mimura, Arakawa, Mosler: ICD-10 buckets hide motor differences — video functional assessment aims at fairer kata competition for wheelchair users and beyond.

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Research articles

Previously published explainers — original pages, unchanged

How Hand and Trunk Movement Influences Kicking Power? Biomechanical Research in Taekwon-do

Did you know that a powerful roundhouse kick depends heavily on what your arms and trunk are doing? We tested 13 elite athletes in the laboratory to understand what optimizes energy transfer to the striking foot.

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Jab or Cross? What Determines the Power of a Knockout Punch in Boxing.

Higher speed doesn't always equal greater striking power. View the results of the latest biomechanical research on the differences between the lead hand (jab) and rear hand (cross) punch.

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Kicking in the Air vs a Target? Why Traditional Karate Training Requires Changes.

In traditional karate, we spend hundreds of hours executing techniques in the air. However, my latest research using EMG sensors exposes that the human body behaves entirely differently when it must hit a physical target.

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Effective Mass in Boxing. Why Heavy Weight Doesn't Guarantee a Knockout?

What exactly is 'effective mass' and why do you utilize a mere fraction of your body weight during a punch? A biomechanical analysis of mass transfer in boxing strikes.

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Artificial Intelligence in Combat Sports. How Neural Networks Predict Striking Power?

Is it actually possible to measure a kick's colossal force without exorbitant dynamometric platforms? The results of our newest research indicate that Machine Learning models (LSTM) can calculate strike power based solely on body movement.

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Does the Presence of a Target Affect Your Kicking Speed? Biomechanical Research in Taekwon-do

Most martial arts training relies on techniques performed in the air. However, my latest research proves that your body moves fastest only when it encounters physical resistance in the form of a target pad.

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Tradition vs. Sport. Which Version of the Roundhouse Kick is Faster?

Different competitions require different executions of techniques. We analyzed 180 roundhouse kicks performed by Taekwon-do masters to check the biomechanical differences between the traditional and sports execution.

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Algorithms Tracking Stress. What Determines Anxiety in Young Men?

Artificial intelligence helps us analyze not only movement but also the human psyche. See how we utilized machine learning algorithms to investigate anxiety and stress levels in crisis situations.

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The Price of Full Contact. Injury Analysis in Kyokushin Karate.

Kyokushin Karate is considered one of the toughest combat sports in the world. We analyzed the injury histories of 61 elite competitors to see what gets damaged most often on the mat and how to effectively prevent it.

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Virtual Reality (VR) in Physiotherapy. How Technology Protects Against Injuries?

VR headsets aren't just entertainment for gamers. Discover how we utilized virtual reality to study defense reactions and prevent dangerous falls, especially among the elderly.

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Taekwondo as Therapy. How Martial Arts Reduce Aggression?

Combat sports are often associated with aggression. However, our analysis proves that adapting Para Taekwondo rules can be a powerful tool in behavioral therapy for individuals with intellectual disabilities.

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Can You Get Used to Pain? Pain Perception in Muay Thai.

Thai boxing is one of the most brutal striking sports. We tested the pain thresholds of professionals and amateurs to see if years of taking hits can "reprogram" the nervous system.

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