本研究旨在探討低差點高爾夫球員於短桿擊球（30 碼短切球）時，軀幹與手部的運動學與動力學特徵，以及其動作變異性對擊球表現之影響。短桿技術對降低總桿數具有決定性作用，但現有文獻對於短桿生物力學之分析仍不足，特別是在軀幹與手部協調與控制方面。本研究試圖填補此一知識缺口，並提出具體可行的訓練建議。
研究方法方面，共招募十八位低差點男性高爾夫選手（平均差點 ≤ 9），於戶外練習場進行標準化之 30 碼短切球實驗。實驗過程中，於受試者右手手背及頸椎基準點（C7）分別配置 Blue Trident 慣性感測器（IMU）以 1600 Hz 頻率蒐集加速度數據，並同步使用 Foresight GCQuad 高爾夫參數分析儀記錄球速、發射角、旋轉軸、後旋率、擊球落點距離與分佈等擊球表現指標。所有數據經 MATLAB 分析後，萃取加速度峰值、範圍值及變異係數，並與擊球表現進行相關性檢驗。
研究結果顯示，右手加速度的峰值與範圍值與發射角呈顯著正相關（r ≈ 0.53–0.56，p < 0.05）；手部與軀幹加速度比值與球落點分佈呈高度正相關（r = 0.69，p < 0.01），並與發射角及旋轉軸亦具中度相關性（p < 0.05）。此外，手部與軀幹加速度變異性與擊球穩定性密切相關，顯示低差點選手穩定且可重複的動作模式，有助於提升擊球精準度與落點一致性。
討論指出，雖然傳統教學強調「手腕無動作」，但實際上高技術水準選手於觸球前後對前導手腕的控制與釋放時機極為關鍵。穩定的軀幹旋轉結合高度一致的腕部動作模式，是短切球成功的核心。研究並透過利得桿數（Strokes Gained: Around the Green, SG:ATG）架構，歸納短切球表現的四大關鍵能力：距離控制、方向控制、觸球品質與旋轉控制，並提出以「動作一致性與可控性」為核心的訓練方向。
結論方面，本研究提供了以量化數據支持的短桿動作模式，說明低差點高爾夫選手透過穩定且可重複的軀幹與手部協調，可顯著提升短切球表現。本研究成果可為高水準球員及教練提供具體依據，協助制定更精準的短桿訓練策略。

This study investigates the kinematic and kinetic characteristics of torso and arm movements in low-handicap golfers during 30-yard chip shots, and examines their relationships with short game performance metrics. Eighteen male low-handicap golfers (average handicap ≤ 9) participated in the study. Torso (C7) and right-hand accelerations were recorded using Blue Trident inertial measurement units (IMUs) at 1600 Hz, while club delivery and ball launch parameters were simultaneously measured via a GCQuad photometric launch monitor. Correlation analyses revealed that peak and range values of hand acceleration exhibited significant positive relationships with launch angle (r = 0.528 and r = 0.561, p < 0.05). The hand-to-torso acceleration ratio was strongly correlated with ball landing dispersion (r = 0.691, p < 0.01) and moderately correlated with launch angle and spin axis (both p < 0.05), suggesting that disproportionate reliance on hand-generated acceleration may compromise shot consistency and directional control. These findings highlight the importance of coordinated torso–arm movement patterns for optimizing impact conditions and minimizing shot variability. The results provide evidence-based insights for refining advanced short game training programs, emphasizing the control of segmental acceleration and movement variability to enhance performance consistency among elite golfers.

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