1. Tina, a 25-year-old athletic female, has increased the intensity of her training, running up to 20 miles per day. Which of the three types of athletic injuries is she most likely to suffer from? 2....

1. Tina, a 25-year-old athletic female, has increased the intensity of her training, running up to 20 miles per day. Which of the three types of athletic injuries is she most likely to suffer from?

2. Which of the following would be higher in a resting athlete than in a resting couch potato—stroke volume or heart rate?