General physical conditioning and off-season training?

Hello and welcome to the forum @too_old_to_sk8!

Any general conditioning will serve you well but for carving core strength is essential, and functional strength is recommended over body building. 

Push, pull, squat, hinge and carry are the five major exercise groups for functional strength.

Calisthenics programs are top notch for athletics and building core strength.  There are lots of calisthenics channels on YouTube. 

Some people need some flexibility training too to open their hips toward the nose of the board on heelside.

The season is on now so it's late for this kind of preseason training.   Just ride until you're beat and then rest until you're recovered.  Repeat until spring!

@too_old_to_sk8 If you're just looking for a 30-40 minute routine you can perform on your off days try something like this:

Start with a solid warmup then do some pullups, dips, and hanging leg raises (rings are easy to come by and are great for these exercises, use elastics at the beginning if needed).  Then focus on three calisthenics exercises like pistol squats, planche and levers and find some of the prepatory exercises online for these (exercises that help you work safely toward accomplishing the full positions).  Do some different squats with dumbbells at the end to roast your legs like sissy squats, Bulgarian split squats, and goblet squats, with most of your focus on single leg exercises.

Make sure your warm up is thorough and that you have enough time to recover before you ride or workout again.  And do the exercises in the correct form to avoid injury.  Check out @squatuniversity on YouTube for some excellent information and motivation.

This is similar to my own preseason routine but mostly I maintain my fitness in the off season with construction and farm work.  Digging, chainsawing, weeding, moving rocks, chopping firewood, and general carpentry keep me busy and out of the house.

Thank you so much, James, you are so kind.

I've been looking towards calisthenics too! It's really great to see my thoughts confirmed.

Off to ride I go.

Core strength is key to so many sports, and it doesn't take a ton of work or special equipment to develop it.  Floor work like planks and dead-bugs, standing twists using a resistance band and farmers carry using water buckets do wonders for core strength.  You can bounce back from a bunch of injuries to arms and legs, but back injuries can hang around indefinitely.  

@deuxdiesel absolutely agreed! Thank you guys, I learned a lot of new exercise names from this post =D hahah! dead-bugs... who woud've known such thing even exists =D

But sure looks effective.

I've been following Jame's advice for now and riding as much as I can, in the evenings and weekends, even got a local instructor for the "back to the basics" drills today 1.5 hours and my legs are out, damn =(((. I do have to get more strength for sure. So I'm writing your advice down for summer time.

Remote sitting job does not benefit my leg endurance at all =).

Thank you for your advice.

Cheers.