Breathing-Muscle Training Helps Emphysema Patients reports on some unusual resistance training:
The muscles involved in exhaling can be strengthened by specific training, and for patients with emphysema, this can help them be more physically active, Israeli researchers report.
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Thirteen of the patients were randomly assigned to receive a half-hour of expiratory muscle training daily, six times a week for three months. Training involved the use of a breathing device that applied resistance during exhalation, which was gradually increased over the first month. The other 13 control patients received training only at the very lowest resistance setting.Patients in the special training group had significantly greater improvements in expiratory muscle strength and endurance. Also, the distance they could walk in six minutes improved much more than in the control group.
Jiu-jitsu seems to offer more inhalation muscle training — since you’re often trying to breath with someone’s weight across your chest.