Final answer:
Resistance training plays a crucial role in preserving muscle mass and increasing metabolism for overweight older adults on a weight-loss diet.
Step-by-step explanation:
Resistance training plays an important role in preserving muscle mass and increasing metabolism, especially for overweight older adults on a weight-loss diet. Regular physical exercise, including resistance training, helps in increasing cardiovascular and muscular fitness and improving overall health.
It also stimulates the deposition of more bone tissue, which is beneficial in preventing osteoporosis and slowing down the bone loss that comes with aging.