Using the above figures his arms must be going faster than 1s per stroke ( I found it difficult to count ) .
Grant Hackett is doing around 30 seconds per 50m with about 34 strokes per length , here in 2000 .
Using the above figures Grant Hackett 's arms must be going faster than 1s per stroke ( I found it difficult to count ) .
Grant Hackett is doing around 30 seconds per 50m with about 34 strokes per length , here in 2000 .