Effort is generally encouraged in our culture. No pain no gain mindset is still prevalent in health/fitness industry. More effort doesn't necessarily result in more gains when it comes to rehab. The reason for this is that trying harder will only exaggerate your habitual movement patterns. If habitual movement patterns are contributing to repetitive stress injuries because of lack of movement variability, then increasing effort by increasing resistance or speed probably won't solve their problem(s). Instead, when you reduce effort, you'll have a much better chance of improving in your movement ability as less effort allows the nervous system to recognize patterns of movement and learn more efficient movements. This is why Feldenkrais Method, Tai Chi, Aikido all emphasize reduction of effort.