Looking forward to reading Harold Mayer's research on interval training.
Even though it's been almost 10 years since I worked out in earnest... even with a poor diet my earlier workouts and activity levels appear to be paying off. Have yet to come close to feeling the effects of over training and continue to increase intensity and duration a little every day. HIIT... which I only used on an infrequent basis in the past, have now become center stage and the improvements over regular training have been noticeable... that... and I think I've become less patient at 57 than I was in my prime...
Starting up again was a slow process with forcing myself to work out. Fortunately I've reached the stage where I'm almost as addicted to working out as I was back in the day. Almost have to force myself to take a day off from the gym and settle for a long walk and or easy bike ride.
Knut, you may also be interested to read my article on hazards of sitting too much -5 reasons too much sitting is hazardous to your health & what to do about it
This information really has enormous impact on personal and public health. It's possible to be fully compliant with the ACSM fitness guidelines and yet suffer from the side effects of being an active couch potato. In other words, even if we do our workouts for fitness, if we have big chunks of sedentary time we suffer the same downside biomarkers as everyone else who just sits around. So you need both, exercise designated for health and/or fitness (there can be a differentiation) AND movement to break up the sedentary periods.
Which shines a big shiny beam on fitting in short segments of activity throughout the day. Moving 10 minutes every hour makes a big difference, and these can be either cardio breaks, resistance training breaks, and even mixing in standing work instead of sitting. I'm doing a quick overview here but read the article and you'll see what I mean. This research is in its infancy but there is a lot of it all pointing in the same direction - the dangers of 'sedentarism'.
Had an excellent interview with Harold Mayer. Hi will be presenting at ACSM and has another paper coming out about interval training. He makes a clear differentiation between interval training and HIIT. According to his work, HIIT can create more fitness but may bypass health measures - getting more fit does not necessarily getting more healthy. He has more studies planned, specifically on the fitness/vs. health model as well as the effects of EPOC or post-exercise oxygen consumption, which is also seen by Len Kravitz, Phd. from UNM and the American Council on Exercise as playing a role in overall calorie consumption that adds up for us, beneficially, over time.