Pregnant women and exercise (specifically marathons)

Pretty good and detailed feature in yesterday's NY Times.

Women – as everyone knows – are tougher then men.

For Pregnant Marathoners, Two Endurance Tests

When Paula Radcliffe won the New York City Marathon in 2007, nine months after giving birth to a daughter, Isla, Radcliffe was considered an anomaly. Her intense training through her pregnancy, which included twice-a-day sessions and grueling hill workouts, was scrutinized and criticized.

Seven years later, maintaining a top running career and a family has become relatively common. About a third of the women in the professional field of 31 for the New York City Marathon next Sunday have children.

“I watched Paula win New York, basically leading from the starting gun to the finish tape, and afterward she picked up her baby,” said Kara Goucher, a top American marathoner. “I realized I can do both. And I want to do both.”

Goucher, 36, finished third in the 2008 New York City Marathon, and this year she will run the New York race for the first time with her 4-year-old son, Colt, cheering her on.

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Clara Horowitz Peterson, a former top runner at Duke, focused on starting a family in her mid-20s, aiming for a racing peak afterward. Now 30, she is pregnant with her fourth child.

“I think if I’d chosen to train at altitude and log 120-mile weeks, I could have made it to the Olympics,” said Peterson, who typically runs 80 to 90 miles a week when not pregnant. “But that comes with sacrifices; you put your career first, and before you know it, you’re 28, maybe confronting fertility issues. I always felt like having children was more important to me than a running career.”

Still, Peterson ran right up until the births of her first three children. She qualified for the 2012 United States Olympic marathon trials just four months after delivering her second child, and she logged a 2-hour-35-minute time at the race four months later.

“I trained hard through that pregnancy,” Peterson said. “You can tell when you’re pushing it. You get twingy, or feel tendons pulling, so I backed off when that happened.”