This counters earlier observations suggesting that resistance exercise increases blood pressure. Similar brief post-exercise elevations are found following aerobic exercise as well. This was reiterated by AHA board members commenting on their study. They noted that resistance training exercisers had reduced body fat levels, likely due to elevated metabolism and associated calorie burning. We're looking at increased fitness characteristics created through resistance training, as contrasted with increased performance from athletes.
Resistance training has a role in both.
Increased bone mass - Recent studies clearly show that increased bone mass results from progressive weight training. Resistance training can slow or delay the onset of osteoporosis. If we build more early, we'll likely have more later. Mood elevation and reduced anxiety - A 1999 study conducted by researchers at the University of Florida and the University of Wisconsin, published by the American College of Sports Medicine found significant mood factors associated with resistance exercise. Bodybuilders play off this, noting that elevated insulin levels are required to drive the maximum amount of muscle-building nutrients into repairing muscles.