Impact of resistance training on core muscle strength and size

  Impact of resistance training on core muscle strength and size What are the muscles in the low back region? (anatomy of the muscles and studies related to these musces) - previous studies have been done about muscle hypertrophy. (More emphasize on muscles in the low back region, also include studies related to other muscles such as biceps, triceps. etc) -what Kind of technologies have been used to measure muscle cross-sectional area (GSA)? (such as MRI magnetic resonance imaging ; computed tomography CT; x-rays ; regression models; etc) more emphasize on MRI related studies