Table 3: Summarizing traits, advantages and shortcomings of several strokes.
Speed a
Economyb
Orientationc
Free Breathing
Skill (Difficulty)d
Front Crawl
+++
+++
0
0
+
Back Crawl
++
++
+
+++
++
Breaststroke
+
+
+++
+++
+++
Head-up Crawl
++
+
+++
++
+++
a from the present results
b references for the economy [7, 14, 21], there are no studies comparing breast with head-up crawl, so their internal rank of economy cannot be addressed.
c meaning how easy it is to look for obstacles or to look for the direction to swim
d this is a matter of the authors opinion