Hi Matthew,
Thanks for writing in. If you’re not doing intentional ME workouts, the gym version, treadmill or outdoor ME-esque workouts, or ‘incidental ME’, like hiking uphill with a pack to go skiing or climbing , ski touring with heavy kit, and the like, then you maintain ME by doing the gym ME. Same exercises in the workout. Depending on what you’re training for, adding more sets or more weight are common progression variables.
Resistance training can happen in the same period as ME workouts. Often folks do one or two lifts like Bulgarian split squat or front squat in an overall moderately hard workout.
Hope this helps,
-Seth