What activities could be limited in the long term after a first rib resection for thoracic outlet syndrome?

No restrictions: The first rib removal,should have no significant effect on activities in the long term.

Very vigorous ones: While a few patients can return to full activities, this usually means moderate stress activities. Getting back to full time competitive sports is also possible, but many athletes find they can't perform at the high degree of performance that they had prior to the injury that led to their operation. There is no harm done by trying vigorous activity, but endurance may be limited.