His body offers lessons on aging

Exercising 40 minutes a day

Perhaps most impressive, he developed this fitness with a simple, relatively abbreviated exercise routine, the researchers noted.

Consistency: Every week, he rows about 30 kilometers (about 18.5 miles), averaging around 40 minutes a day.

A mix of easy, moderate and intense training: About 70% of these workouts are easy, with Morgan hardly laboring. Another 20% are at a difficult but tolerable pace, and the final 10% at an all-out, barely sustainable intensity.

Weight training: Two or three times a week, he also weight-trains, using adjustable dumbbells to complete about three sets of lunges and curls, repeating each move until his muscles are too tired to continue.

A high-protein diet: He eats plenty of protein, his daily consumption regularly exceeding the usual dietary recommendation of about 60 grams of protein for someone of his weight.

How exercise changes how we age

“This is an interesting case study that sheds light on our understanding of exercise adaptation across the life span,” said Scott Trappe, director of the Human Performance Laboratory at Ball State University in Indiana. He has studied many older athletes but was not involved in the new study.

“We are still learning about starting a late-life exercise program,” he added, “but the evidence is pretty clear that the human body maintains the ability to adapt to exercise at any age.”

In fact, Morgan’s fitness and physical power at 93 suggest that “we don’t have to lose” large amounts of muscle and aerobic capacity as we grow older, Jakeman said. Exercise could help us build and maintain a strong, capable body, whatever our age, he said.

Of course, Morgan probably had some genetic advantages, the scientists point out. Rowing prowess seems to run in the family.

And his race performances in recent years have been slower than they were 15, 10 or even five years ago. Exercise won’t erase the effects of aging. But it may slow our bodies’ losses, Morgan’s example seems to tell us. It may flatten the decline.

It also offers other, less-corporeal rewards. “There is a certain pleasure in achieving a world championship,” Morgan told me through his grandson, with almost comic self-effacement.

“I started from nowhere,” he said, “and I suddenly realized there was a lot of pleasure in doing this.”

LORCAN DALY Morgan joined researchers at the physiology lab at the University of Limerick in Ireland. He developed his fitness with a simple, relatively abbreviated exercise routine, researchers noted.