Hop Test Limb Symmetry Index≥90% Criterion

Actual matched hop-battery results using existing limb-symmetry calculation; each result retains nominal≥90criterion separately, not automatically clear return to sport or detect bilateral deficits. Distance/time direction and same task convention caller verified.

Description

Hop limb-symmetry index compares involved and matched uninvolved performance.

Hop limb-symmetry index compares involved and matched uninvolved performance.^[1]

The nominal ninety-percent screen does not establish readiness to return to sport. Use this tool to calculate the stated observation or conditional model from supplied measurements.

When to use Hop Test Limb Symmetry Index≥90% Criterion

Use this tool to calculate the stated observation or conditional model from supplied measurements. Establish the measurement protocol, instrument or reference edition, matching units and observation context.

How to use Hop Test Limb Symmetry Index≥90% Criterion and understand its results

Establish the measurement protocol, instrument or reference edition, matching units and observation context.
Enter independentlyMeasuredInvolvedHopResults, independentlyMatchedUninvolvedHopResults, using the field meanings and rules below, then run the tool.
Read result.observedHopLimbSymmetryPercents, result.atOrAboveNominalNinetyFlags. Interpret each field using the units, signs and evidence rules below.
If input validation fails, correct the reported field and run again. Before applying a successful result, check the stated reference scope, units, assumptions and any retained unknown evidence.

Input field	Meaning	Value type	Requirement
independentlyMeasuredInvolvedHopResults	Independently measured involved hop results	list of number	Required
independentlyMatchedUninvolvedHopResults	Independently matched uninvolved hop results	list of number	Required

Supply nonempty aligned involved and uninvolved hop-result lists. Involved results must be nonnegative and matched reference results positive. Calculate 100×involved/uninvolved for each pair and return binary flags for percentage≥90. Ratios above 100 are allowed; no rounding, bilateral-baseline correction or clearance decision is supplied. Use an outcome direction compatible with this ratio.^[2]

LSIpercent_i=100×involved_i/uninvolved_i; nominalFlag_i=LSIpercent_i≥90 ? 1 : 0

Apply the field units and exact ordering, boundary and evidence rules above.

Output field	Meaning	Value type
result	Structured result containing the calculation or selected reference fields below	object
result.observedHopLimbSymmetryPercents	Per-pair 100 times involved measurement divided by uninvolved measurement	list of number
result.atOrAboveNominalNinetyFlags	Per-pair 0/1 flags for symmetry at least 90 percent	list of number

json

{
  "input": {
    "independentlyMeasuredInvolvedHopResults": [
      90,
      80
    ],
    "independentlyMatchedUninvolvedHopResults": [
      100,
      100
    ]
  },
  "output": {
    "result": {
      "observedHopLimbSymmetryPercents": [
        90,
        80
      ],
      "atOrAboveNominalNinetyFlags": [
        1,
        0
      ]
    }
  }
}

Limitations and assumptions

The nominal ninety-percent screen does not establish readiness to return to sport. Results depend on the independently established measurement basis and the exact model assumptions above.

Every listed input requires an explicit value. Unexpected fields, incorrect value types, nonfinite numbers and sparse numeric arrays fail validation; tool-specific bounds and alignment rules apply as described above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful calculation that reports a false comparison or retains unknown evidence.

Alternative or Complementary methods

Use Standing Long Jump Distance Cm Norms Lookup to examine a related aspect: Standing long-jump references depend on takeoff, landing and distance conventions.

Use Broad to Vertical Jump Correlation Reference Lookup where its separate inputs and scope apply: Broad- and vertical-jump correlations depend on the measured cohort and protocols.

References

Hop Test Limb Symmetry Index≥90% Criterion — tool.io
Limb Symmetry Index — tool.io

Similar or alternative tools

Standing Long Jump Distance Cm Norms Lookup
Standing long-jump references depend on takeoff, landing and distance conventions.
Broad to Vertical Jump Correlation Reference Lookup
Broad- and vertical-jump correlations depend on the measured cohort and protocols.