Rowing Drive-to-Recovery Ratio

Calculate rowing drive-to-recovery ratio from the supplied measurements.

Description

Rowing drive-to-recovery ratio compares two stroke phases.

Rowing drive-to-recovery ratio compares two stroke phases. Its numerator is drive time, not recovery time.1

Calculate rowing drive-to-recovery ratio from the supplied measurements.

When to use Rowing Drive-to-Recovery Ratio

Use this tool to calculate rowing drive-to-recovery 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 Rowing Drive-to-Recovery Ratio and understand its results

  1. Prepare the measured movement, timing, load or preassigned score requested. Keep protocols, units, paired measurements and caller-selected thresholds consistent.
  2. Enter driveTimeSeconds, recoveryTimeSeconds using the field table and calculation rules, then run the tool.
  3. Read driveRecoveryRatio. The explanation below defines the units, signs, ordering and any flags or placeholder values.
  4. 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 fieldMeaningValue type; see rules belowRequirement
driveTimeSecondsDrive timenumberRequired
recoveryTimeSecondsRecovery timenumberRequired

Enter finite signed durations with nonzero recovery. Return the ratio using the shared helper.

ratio=driveSeconds/recoverySeconds

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

Output fieldMeaningValue type
driveRecoveryRatioDrive-to-recovery ratio (ratio)number
json
{
  "input": {
    "driveTimeSeconds": 0.8,
    "recoveryTimeSeconds": 1.6
  },
  "output": {
    "driveRecoveryRatio": 0.5
  }
}

Limitations and assumptions

Use positive measured durations for physical interpretation. No stroke-rate optimization or rowing quality is inferred.

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 Swim Golf Score: Compute per-lap SWOLF from seconds plus strokes, for like-for-like lap distances. For a complementary task, use Ground Contact Aerial Ratio: Compare running ground-contact and aerial times.

References

  1. Rowing Drive-to-Recovery Ratio — tool.io

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