Do some muscle groups take longer to grow?

[johnnytest08]

I've been struggling with doing dumbbell exercises with my triceps. For isolation exercises such as dumbbell triceps extension or triceps kickback I struggle with just the 15 lb dumbbells. I've basically been stuck on 15 lbs for months now because I can't do enough reps to move up to 20 lbs. It's a different story with my chest and when I do dumbbell bench presses. I moved from a 40 lb bench press to 80 lb bench press in a month or two. I've been moving up in weights in my biceps and shoulder exercises also. I try to alternate exercises so my body does not get used to them. So, is it that my triceps are just very weak or do some muscle groups grow slower?

[MarcinPB]

At your bodyweight, drop the isolation exercises completely. Stick to benching and close grip benching for triceps. Once you get stronger start doing dips. Even if you can only do 1 or 2 dips in a set keep at it. Dips are easily the best tricep exercise.

[HighRolluh]

Yeah it's usually happens to everyone.

If u wanna fix it, you gotta experiment with exercise choices and rep ranges

I reco Tricep Dips, Tricep Rope Extensions, and Close grip bench press

[ironwill2008]

So, is it that my triceps are just very weak or do some muscle groups grow slower?

Just about everyone has one or more body parts that are less responsive to gains than others. Consistent training over time is the remedy.

[XADO]

Just about everyone has one or more body parts that are less responsive to gains than others. Consistent training over time is the remedy.

What he said is 100% true :P

[DJAuto]

Just about everyone has one or more body parts that are less responsive to gains than others. Consistent training over time is the remedy.

Precisely.

For me, it's calves and quadriceps.

[johnnytest08]

Wow, thanks to all the responses. Glad to know, I'm not the only one.

[gallagnm]

switch up the exercises and see how you respond. But yeah i feel everyone has lacking body parts of some sort

[IVAN305]

im a noob cutting so im still getting some gains and
this happened to me in my biceps until i debunked
make sure ur getting enough protein and rest try working out biceps first

[IVAN305]

sorry i mean tricep or w./e ur weak spot is first

[Pump Freak 86]

You didn't mention any real power exercises for triceps. Kickbacks and extensions place the tricep in a grea place for a stimulative contraction (growth wise) but not in a great place for generating strength. Both a single joint movements while your frame of comparison was comprised of multi joint compound movements (some of which involve triceps) and movements that are a bit easier to cheat (bicep curls).

Speaking from experience, I can tell you that I don't use a whole lot more weight in training my triceps on those lifts (25-30lbs) an my arms have been progressing well in recent months. When I trained heavier, I gained more strength without really hitting the muscle like I needed to. Feeling the tension on the muscle throughout the ENTIRE range of motion is key. If you are utilizing slow negatives and explosive contractions properly, your triceps will scream on the lightest of weights.

I would also urge you to include tricep-centric compound movements in your routine to gauge your strength better. Cgbp and dips with no forward lean will give you a better sense of how strong your triceps are relative to your other body parts, and we haven't even gotten to genetics yet. There are too many factors that are not accounted for. There are muscles that are hard to grow almost by definition (calves), but that's not most muscles.