Negative Split Check
Determine whether the second half is faster and quantify the change.
Description
A negative split means the second comparable half took less time than the first.
A negative split means the second comparable half took less time than the first. The sign of first-minus-second duration preserves improvement direction.1
Determine whether the second half is faster and quantify the change.
When to use Negative Split Check
Use this tool to determine whether the second half is faster and quantify the change.
Prepare the measured movement, timing, load or preassigned score requested. Keep protocols, units, paired measurements and caller-selected thresholds consistent.
How to use Negative Split Check 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 firstHalfSeconds, secondHalfSeconds using the field table and calculation rules, then run the tool.
- Read timeDifferenceSeconds, negativeSplit, improvementPercent. 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 |
|---|---|---|---|
| firstHalfSeconds | First-half time (s) | number; minimum: 0 | Required |
| secondHalfSeconds | Second-half time (s) | number; minimum: 0 | Required |
Enter positive half-times seconds. Return difference, strict difference>0 flag and signed percentage. Equality is not a negative split.
difference=first−second; improvement%=100difference/first Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| timeDifferenceSeconds | First minus second half (s) | number |
| negativeSplit | Negative split | boolean |
| improvementPercent | Second-half improvement (%) | number |
{
"input": {
"firstHalfSeconds": 305,
"secondHalfSeconds": 295
},
"output": {
"timeDifferenceSeconds": 10,
"negativeSplit": true,
"improvementPercent": 3.278688524590164
}
}Limitations and assumptions
Equal distances and comparable conditions must be established externally.
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. A successfully returned false flag is an evaluated outcome; its meaning is explained above.
Alternative or Complementary methods
Use Ten Meter Gait Speed: Compare comfortable and fast gait velocities over the same measured walkway. For a complementary task, use Cadence Stride Speed Solver: Solve one missing gait speed, step cadence, or step length from the other two.
References
-
Negative Split Check — tool.io
Similar or alternative tools
- Ten Meter Gait Speed
Compare comfortable and fast gait velocities over the same measured walkway.
- Cadence Stride Speed Solver
Solve one missing gait speed, step cadence, or step length from the other two.