Saturday, 2:30 p.m.:

During a game against Illinois two weeks ago, MSU head coach Tom Izzo's average heart rate was 110 to 115 beats per minute -- approximately 70 percent of his max heart rate, a "Sports Science" segment on ESPN showed Saturday afternoon

That's approximately the same percentage as a marathoner during an entire marathon, reporter John Brenkus said on the cable network, MLive's Mike Griffith says in a post from East Lansing.

Izzo had a resting rate of 14 breaths a minute and 68 heartbeats per minute before the game. But nine minutes into the game against Illinois, with Michigan State trailing by 12 points, Izzo was taking 30 breaths per minute and registered 120 heartbeats per minute.

Izzo's body temperature peaked at 100 degrees and his heart rate spiked with about six minutes remaining in the game. His pulse reached 135 beats per minute — the same ESPN Sports Science has measured in a stock car driver during a 200 mph NASCAR race.

"Each time his (Izzo's) heart rate spikes, he recovers and lowers his vitals down in under 30 seconds,'' said Sports Science reporter John Brenkus, who was then seen telling Izzo: "The way you recovered shows you're in great shape.''

Original article, 8:15 a.m. Saturday:

Tom Izzo was wired -- literally, as well as in his usual sense -- during a Breslin Center game this month for an ESPN segment airing today, Free Press sportswriter Brian Manzullo reports.

Just how much stress does Tom Izzo go through during a Michigan State basketball game?

We’re about to find out.

ESPN Sport Science tabbed the head coach to participate in a feature on coaching stress, which will air during College GameDay at noon Saturday on ESPN. . . .

John Brenkus, host of ESPN Sport Science, and his team were given “unprecedented access” to Izzo for MSU’s March 1 game against Illinois (a 53-46 loss), equipping him with a high-tech bioharness, an accelerometer and – get this – a sensor for Izzo to swallow that measures his core body temperature.

Read more: Detroit Free Press