The boat's rhythm changed abruptly from 43 strokes per minute to 32.

I knew she was standing over me, could feel it, even before the water's rhythm changed.

He wanted to teach them how the body's movements and rhythms change under water.

At one point William thought the rhythm of the whip strokes changed, slowed.

The different leads, rhythms and beats generally change every 8 bars.

And, basically, the rhythm of music hasn't changed a lot since the 60's.

And the rhythms of life have changed too.

What were you doing when your heart rate or rhythm changed?

Again the rhythm changed, became light, soaring, like a bird on the wing.

Your heart rate or rhythm can change when you are under stress or having pain.