Henry Phạm Đức · Henry Pham Duc

Tennis & Tai Chi,
researched side by side.

A bilingual knowledge garden for one curious tennis enthusiast and tai chi practitioner — biomechanics, kinetic chains, fascia, and the dialogue between modern sport and a 1,000-year-old moving meditation.

Một khu vườn tri thức song ngữ cho một người đam mê môn tennis và tập Taichi — cơ sinh học, chuỗi động học, fascia, và cuộc đối thoại giữa thể thao hiện đại với một môn thiền động đã có hơn 1.000 năm.

About

I'm Henry Pham Duc — a tennis enthusiast in Surrey, BC, and a tai chi practitioner. I research the biomechanics of the modern tennis groundstroke, the kinetic chain, and the surprisingly deep overlap between fascial lines, the stretch-shortening cycle, and traditional Chinese movement arts.

Tôi là Henry Phạm Đức — người đam mê môn tennis ở Surrey, BC, và người tập Taichi đã lâu. Tôi nghiên cứu cơ sinh học cú thuận tay hiện đại, chuỗi động học, và sự giao thoa đáng ngạc nhiên giữa các đường fascia, chu trình kéo-rút ngắn, với các môn võ-thuật truyền thống Trung Hoa.

These pages are the home base for what I publish: Tennis for Every One (my long-running coaching blog), a bilingual Tennis Wiki (Vietnamese & English), a parallel Tai Chi Wiki, an AI coach, a biomechanics research lab, and a free bilingual ebook library.

🎾 Tennis

Modern tennis, decoded.

Coaching notes, biomechanics research, and a bilingual wiki built from the study system I use for my own game.

Tennis Vault

Tennis Knowledge Base

The home site: 22 deep-dives on technique, biomechanics, conditioning, and the mental game — bilingual EN/VI.

tennis-knowledgebase · v2 integrates all 22 deep-dives

Wiki · VI

Tennis WIKI (Tiếng Việt)

Vietnamese tennis encyclopedia — 800+ articles on technique, footwork, serve, volley, mental game, tactics.

800+ bài viết · knowledge graph · dark mode

Wiki · EN

Tennis WIKI (English)

English mirror of the Vietnamese wiki — same research system, same deep-dives, same evidence base.

813 articles · bilingual cross-links

Biomechanics

Tennis Future Lab

Biomechanics framework + AI Video Analyzer. Upload a tennis video, get an annotated playback, cheat-sheet PDF, and a 0–100 score vs Roger Federer.

Gradio app · Hugging Face Space

AI Coach

Tennis Doctor (AI Chat)

Ask anything about tennis. Answers are drawn from the wiki + 97 tennis books. Multilingual EN/VI. Free, no signup.

Cloudflare Workers + Vectorize + Workers AI

Interactive

Tennis Control System Guide

Bilingual interactive guide walking through the tennis control system — VI/EN, mirrored from the Manus site.

step-by-step · self-paced

Library

Tennis Ebook — Thư Viện Hoàn Chỉnh

35+ tennis ebooks and TFL manuals in one place — technique, biomechanics, conditioning, the kinetic chain. Vietnamese.

35+ tài liệu · offline-ready

Visual

Visual Coaching Library

46 bilingual EN-VI flipbook cards across 11 tennis topics — 5 practical instructions per image, sourced from MD notes and tennis biomechanics research.

46 cards · 230 instructions

Visual

TFL Infographics Library

38+ infographics on tennis biomechanics, technique, conditioning, and the kinetic chain. Vietnamese.

38+ infographics · Vietnamese

Podcast

Tennis Future Lab Podcast Series

Audio deep-dives into tennis biomechanics and the kinetic chain — listen while you drive, run, or rest between sets.

rss.com · ongoing series

Where I write about tennis

☯ Tai Chi

1,000-year-old moving meditation, also decoded.

The slow form, push-hands, qigong, fascia, and the crossover with tennis. A parallel research system — because the body is the same body, in both.

Why tennis AND tai chi?

Tennis teaches me speed, power, and the kinetic chain. Tai chi teaches me root, fascia, and what happens after the kinetic chain ends. Both are conversations with the ground. Both are about how a human body organizes force from the floor up. The crossover research lives in both wikis — and is the most interesting work I do.

Stay in touch

I post most actively on Facebook and on the Tennis for Every One blog. The wikis are deep-dive references; the social channels are where the daily practice shows up.

Wiki này là mã nguồn mở, phát hành theo Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0). Tác giả: Henry Phạm.