I recently started using overcoming isometric exercises, and I’m thoroughly enjoying them. These are exercises where you try to move an immovable object. Last month, I made this DIY isometric trainer setup by Reddit user 16of16 and have been practicing these kinds of exercises since then. It has opened up heavy resistance training for me which has seemed out of reach for the past decade.

I haven’t consistently lifted weights since grad school. When I lifted back then, I really enjoyed it. I liked feeling stronger, and I even enjoyed the actual lifting itself. It’s great to be able to give maximum power without breaking anything or hurting myself. But I stopped.

Weight lifting stopped being fun. After grad school, I didn’t have friends to go to the gym with. I like lifting free-weights, but without a gym buddy spotting me, I couldn’t safely give maximum effort. I tried using the machines, but that wasn’t as fun for me. Also I was commuting into NYC from New Jersey. As anyone who has done it knows, it can be soul-draining. It became very hard to justify regularly going to the gym.

I had another option, calisthenics. I had started doing push-ups as a kid which started me on a life-long practice of calisthenics. I love that I can do these exercises anywhere. I’ve learned a variety of different exercises at this point that I can do until the point of failure. So although I tend to do more reps than I would with weight lifting, I still can challenge myself and get stronger.

But I missed exerting maximum effort and being under a heavy load. Especially with free weights, the whole body becomes a force chain. Every part needs to contribute in order for the weight to be lifted. It is exhilarating.

Recently, I learned about overcoming isometrics which is allowing me to exert maximum force without weights. Isometrics are exercises where you exert force while not moving, for example wall sits. Overcoming isometrics is a variation where you push or pull against something strong that won’t move. It could be pushing against a wall or trying to lift a weight that is much heavier than you can lift. It’s cool because you can exert as much or as little force, for as long as you want. Despite nothing moving it is very much real force, and in a lifting position I feel the same kind of heavy load that I would with free weights.

To try out this kind of exerciese, I built the DIY isometric trainer setup from Reddit user 16of16. The idea is simple: a plywood board that you stand on, a strong bar that you hold, and a strong cargo strap looped under the board and hooked onto either end of the bar. The cargo strap is adjustable, so you can use this for various lifting positions. The exercise involves your feet/body pressing against the board and your hands/legs/back trying to push the bar away from the board. The cargo strap prevents it from moving and provides the resistance force.

Here’s how I made it:

  • I got the following items:
  • I filed the edge of the plywood to make it more rounded so that it doesn’t rip the cargo strap.
  • I removed the carabiners from the small cargo loops, and attached the loops through the circular end of the hooks at the end of the cargo strap.
  • To use it, I lay the cargo strap flat on the floor, lay the plywood on top, insert one of the bars through the loops at then end of the cargo strap, then adjust the length of the cargo strap as desired. Then I am ready to exercise.
Man standing on plywood board and holding a 1 inch diameter metal bar against his chest. The bar has cargo straps looped over the ends, and the cargo straps loop under the plywood board. The man seems to be straining upward against the bar with slightly bent knees. In the background a wood paneled wall and a few pieces of exercise equipment.
Me demonstrating my overcoming isometrics setup

With weights the visible aspect is the motion of the weights. With overcoming isometrics there isn’t much that is visible, although I do notice the strap going taut and the plywood flexing slightly. So I need to focus on what is happening internally: the compression I’m feeling and the effort of my muscles. But when I do that it works; I can challenge myself. I have a similar physical response that I would have after lifting a heavy weight: raised heart rate and faster breathing.

One of the reasons, I looked into isometrics in the first place is that I’ve heard they are good for joints. I struggle with runner’s knee. It tends to flare up if I do things like squats or jumps, and I can usually get better with physical therapy type exercises. So I hoped that overcoming isometrics would allow me to do heavy exercise. Alas my knee pain came back, so it is not a silver bullet. But it does seem to be easier on the body in some ways. I don’t get sore after these exercises.

My current plan is to do a mix of exercises, overcoming isometrics, calisthenics, and physical therapy exercises. Hopefully that will keep the aches and pains at bay. I also plan on periodically tracking the force that I can generate on the isometric setup. I use a crane scale to measure the force. I think it will be fun to see progress. I’m optimistic about it.