Tennis Biomechanics: Serve Kinematics and Groundstroke Efficiency

Status: draft · Confidence: medium (0.625) · Basis: verified_sources

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## TL;DR

Tennis biomechanics optimizes the kinetic chain — sequential energy transfer from legs through hip, trunk, shoulder, elbow, wrist, to racket. Modern serves generate 230+ km/h ball speeds with shoulder internal rotation exceeding 3,000°/s.

## Core Explanation

Serve phases: wind-up, cocking (max shoulder external rotation 170-180°), acceleration (3,000°/s internal rotation), follow-through. Ball speed: men avg 1st serve 190 km/h, women 160 km/h. Topspin forehand: 2,500-3,500 RPM. Kinetic chain breakdown costs 15-25% power. Open-stance forehand: 20% more angular momentum. Injuries: tennis elbow (lateral epicondylitis, 30-50% recreational players).

## Detailed Analysis

[待后续补充。]

## Further Reading

- [Source 1 — Tennis Biomechanics: Serve Kinematics and Groundstroke Efficiency](https://www.itftennis.com/)

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