Just saw this......
1, If you have any need for bursts in efforts particularly in the 12 seconds range, and in my opinion even within 20 seconds range, then yes. Utilizing the ATP-PC energy system.
Coz i still sometimes do hill sprints and SITs, yeah i guess so.
Running is up to 800m, or kicks at the end of your 2.4, 3k, 5k, 10k. Of coz for distance running it's going to be minimal.
2. For cycling, i think practically quite useful in the real life since riding has quite a fair bit of surgey bursty ride on the roads. Or short climbs when you off saddle.
3. Then for strength training where you hoot until near failure needing these shorter near max bursts of energy and my sets are within 15-20 reps , yes.
4, Side effect is increase in muscle bulk due to water retention in the muscles. A bit bad thing is if you climb a lot then yeah that 2 to even 3kg increase sucks, dont bother to buy climbing bikes then lah, just climb and enjoy no PB attempts etc. But the good thing is that aesthetically your quads (one big muscle of your body) and for me upper body since i strength train there also look more pleasing in cycling jersey or running singlet or even my tighter running t-shirts.
5. There is some studies regarding recovery helped by Creatine, not really sure how that works but i hope it works for me.
So for me, in real world usages, yes it potentially is pretty useful.
ps. Within 20 seconds is a bit short, but if you are also aiming for the 5-7 seconds range, go google Beta Alanine. Some studies even cite as long as 25 mins might have a bit of gains. These 2 combined have a high chance that presents better value than spending a few Ks on a pair of wheels or even TT helmet.
I use these 2. Basically around 30 cents a day for the 2 (after iherb discounts) or 109 a year. Sometimes i do cut down dosages a little.
https://sg.iherb.com/pr/california-...atine-monohydrate-unflavored-1-lb-454-g/71026
https://sg.iherb.com/pr/nutricost-beta-alanine-unflavored-17-9-oz-500-g/145284