Countermovement Jump Benefit

Quantify countermovement height benefit relative to a squat jump.

Description

Countermovement-jump benefit compares measured height with a squat-jump baseline.

Countermovement-jump benefit compares measured height with a squat-jump baseline. The percentage is normalized to squat-jump height.^[1]

Quantify countermovement height benefit relative to a squat jump.

When to use Countermovement Jump Benefit

Use this tool to quantify countermovement height benefit relative to a squat jump.

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

How to use Countermovement Jump Benefit 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 countermovementHeightCm, squatJumpHeightCm using the field table and calculation rules, then run the tool.
Read heightGainCm, percentBenefit. 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
countermovementHeightCm	Countermovement height cm	number	Required
squatJumpHeightCm	Squat jump height cm	number	Required

Enter nonnegative CMJ and positive SJ cm. Return signed height gain and percentage.

gain=CMJ−SJ; benefit%=100gain/SJ

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

Output field	Meaning	Value type
heightGainCm	Height gain cm	number
percentBenefit	Percent benefit	number

json

{
  "input": {
    "countermovementHeightCm": 30,
    "squatJumpHeightCm": 25
  },
  "output": {
    "heightGainCm": 5,
    "percentBenefit": 20
  }
}

Limitations and assumptions

No protocol equivalence, elastic contribution or causal neuromuscular mechanism is established.

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 Vertec Jump Reach: Compute Vertec vertical-jump height from standing reach and highest touch. For a complementary task, use Flight Time Jump Height: Infer ballistic jump height from flight time and supplied gravitational acceleration.

References

Countermovement Jump Benefit — tool.io

Similar or alternative tools

Vertec Jump Reach
Compute Vertec vertical-jump height from standing reach and highest touch.
Flight Time Jump Height
Infer ballistic jump height from flight time and supplied gravitational acceleration.