8
Forerunner 910XT Quick Start Manual
Swimming with Your
Forerunner
You can record your swim data including
distance, pace, stroke count, and stroke
type (pool swim only).
nOTE: The Forerunner cannot record
heart rate data while swimming.
1
Hold MODE.
2
Select Swim > Pool Swim.
3
Select your pool length or enter a
custom length.
4
If necessary, select MODE > Settings
> Pool Swim Settings > Data Fields
to customize the swim training pages.
For a complete list of the available
data fields, see the owner’s manual.
5
Select STarT.
6
If you stop to rest, select LaP, and
select LaP again when you resume
swimming.
This creates a rest interval separate
from your swim interval.
7
After completing your swim, select
STOP.
8
Hold rESET to save your data and
reset the timer.
Swim Terminology
nOTE: For additional information about
open water swimming and swim data
fields, see the owner’s manual.
• A
length
is one trip down the pool.
• An
interval
in swimming is like a lap in
running. You can break your swim into
swim intervals and rest intervals.
• A
stroke
is counted every time your
arm wearing the Forerunner completes
a full cycle.
• Your
swolf
score is the sum of the
time for one length and the number of
strokes for that length. For example,
30 seconds plus 15 strokes equals
a swolf score of 45. Swolf is a
measurement of swimming efficiency
and, like golf, a lower score is better.
• Your swim
efficiency
index
is the sum
of the time and the number of strokes
that it takes to swim 25 meters. This
allows you to compare your swim
efficiency to another pool or an open
water workout. A lower swim efficiency
index is better.
