A study of runners at the New York City Marathon shows that the fastest finishing times in this age group dropped by seven minutes among men and 16 minutes among women, he said.
Runners who suffer from foot and leg injuries will switch from “minimalist” footwear back to traditional running shoes, Prescott said.
While older runners are relying on the “tried-and-true” methods, young adults are using the latest technology by making use of health and fitness apps on their smartphones.
There are more than 10,000 health and fitness apps for the iPhone, and that number is expected to grow in 2012, he said.
Other trends include leaving gluten out of diets, but bringing protein back in.
Gluten, a protein found in wheat, breads and cereals, is fast becoming a forbidden staple for many people. The old diet craze of high-protein, low-carb will make its way back to the table, Prescott said.