Hip Turn-to-Slide Ratio

Calculate hip turn-to-slide ratio from the supplied measurements.

Description

Hip turn-to-slide ratio expresses rotational degrees per centimeter of lateral motion.

Hip turn-to-slide ratio expresses rotational degrees per centimeter of lateral motion. The ratio depends on the supplied sign and coordinate conventions.^[1]

Calculate hip turn-to-slide ratio from the supplied measurements.

When to use Hip Turn-to-Slide Ratio

Use this tool to calculate hip turn-to-slide ratio from the supplied measurements.

Prepare the measured movement, timing, load or preassigned score requested. Keep protocols, units, paired measurements and caller-selected thresholds consistent.

How to use Hip Turn-to-Slide Ratio and understand its results

Prepare the measured movement, timing, load or preassigned score requested. Keep protocols, units, paired measurements and caller-selected thresholds consistent.
Enter hipTurnDegrees, lateralSlideCentimeters using the field table and calculation rules, then run the tool.
Read turnDegreesPerCentimeter. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
hipTurnDegrees	Hip turn	number	Required
lateralSlideCentimeters	Lateral slide	number	Required

Enter finite signed values with nonzero slide. Return degrees/cm.

ratio=hipTurnDegrees/lateralSlideCm

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
turnDegreesPerCentimeter	Turn per slide (°/cm)	number

json

{
  "input": {
    "hipTurnDegrees": 45,
    "lateralSlideCentimeters": 5
  },
  "output": {
    "turnDegreesPerCentimeter": 9
  }
}

Limitations and assumptions

No motion tracking, ideal swing ratio or performance causality is supplied.

Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Golf Shoulder Hip Separation: Calculate the smallest shoulder-to-hip rotational separation angle in a golf swing. For a complementary task, use Swing Plane Angle Difference: Calculate swing plane angle difference from the supplied measurements.

References

Hip Turn-to-Slide Ratio — tool.io

Similar or alternative tools

Golf Shoulder Hip Separation
Calculate the smallest shoulder-to-hip rotational separation angle in a golf swing.
Swing Plane Angle Difference
Calculate swing plane angle difference from the supplied measurements.