Research Review: Interaction Forces in the Golf Swing
Research Review: Interaction Forces in the Golf Swing
Source-collection page for interaction forces, segment sequencing, and golf-specific evidence gaps
This page records the evidence boundary for interaction forces, segment sequencing, and hand-path mechanics in the golf swing. It distinguishes quantities measured or reconstructed by each source from causal interpretations that require a declared dynamic model.
Claims about interaction forces “automatically” producing proximal-to-distal sequencing, maximizing clubhead speed, or explaining skilled performance should not be treated as established by this page. Those claims require direct engagement with the cited papers, including methods, measured variables, model assumptions, and limitations.
Current Scope
The page currently points readers toward Carol Putnam’s work and related searches on interaction forces in golf. The appropriate scope for the completed review is narrower than the earlier wording implied:
- Define what the cited papers mean by interaction force, joint force, and segmental contribution.
- Identify which parts of proximal-to-distal sequencing are measured directly and which are inferred from model decomposition.
- Distinguish mechanical interaction terms from active muscular inputs and coaching interpretation.
- State whether each cited source studies golf specifically or uses a broader multi-segment movement model.
Current Source Links
Reviewed Hand-Path Finding
MacKenzie, McCourt, and Champoux analyzed 76 amateur golfers using club kinematics and three-dimensional inverse dynamics. Their equivalent net force at the grip was projected along the hand path, and average force along that path had the strongest reported association with clubhead speed (\(r=.96\)). The source defines a useful mechanical estimand: linear work divided by hand-path length.
That result does not partition the force into instantaneous drift and control, resolve individual muscle forces, or measure metabolic effort. It also does not uniquely allocate load between two hands. The planned model study therefore tests a narrower follow-up question: under explicit model assumptions, how much of the same net hand-path quantity is assigned to pointwise drift and same-state control?
The explanatory framework is available in Proximal-to-Distal Energy Transfer in the Golf Swing. New attribution results remain withheld until their exact source commit and artifact hashes pass the repository’s offline evidence validator.
What Can Be Said Now
The existing site can accurately describe interaction forces as a relevant topic for golf-swing biomechanics and for the analysis of segment-to-segment coupling. It should not yet claim that a specific mechanism is decisive, automatic, or performance-maximizing without a completed citation-backed review.