- [JSON representation](https://developers.google.com/health/reference/rest/v4beta/SwimLengthsDataRollupValue#SCHEMA_REPRESENTATION)

Represents the result of the rollup of the swim lengths data type.

| JSON representation |
|---|
| ``` { "strokeCountSum": string } ``` |

| Fields ||
|---|---|
| `strokeCountSum` | `string (https://developers.google.com/discovery/v1/type-format format)` Total number of swim strokes in the interval. |