Here’s a few snippets from the article:
There’s an interesting article just published inMedicine & Science in Sports & Exercise on “evidence of parasympathetic hyperactivity” as a marker of overtraining. It has some interesting insights on the causes and underlying physiology of pushing too hard
The basics: French researchers took a bunch of well-trained triathletes and divided them into two groups. Both groups spent one week doing regular training; then for the next three weeks, the control group continued regular training, while the other group ramped up their training by 40%; then both groups tapered for a week before a final performance test.
Each morning, when the subjects woke up, they took four minutes of heart-rate data before getting up for the first time, and then another four minute of data after standing up. The heart-rate data included simple measures like average heart rate, as well as more sophisticated analysis of heart-rate variability.
To see the results of these tests and to read the rest of the article click on the link below: