What it is HIIT? It stands for High Intensity Interval Training, which means working out at a lower intensity for a given amount of time, followed by working out at a higher intensity for a given amount of time, in a cycle. For example, a person could walk for two minutes, run for 30 seconds, walk for two, run for 30, etc. HIIT has gotten a lot of hype because the research shows that it is an efficient way to work out.
HIIT now encompasses many modes of exercise. There are HIIT aquatics classes, weight training, and cardio applications. The results are that one can get the same benefit as a regular workout, but in a compacted amount of time…and the benefits can continue for a while after the workout ends. Research shows that when we raise our heart rate significantly, we can continue to burn calories at the higher rate for several hours. That is efficient! And that explains the popularity.
But is it OK for seniors? AARP ran an article on this topic last year: https://www.aarp.org/health/healthy-living/info-2018/high-intensity-interval-training-workout.html. Being a trainer “of a certain age,” I clipped out of the bulletin and took it into the gym, figuring I’d give it a shot.
For many of my hour-long sessions I start out with the beginner’s HIIT suggested in the article: 3 minutes low intensity, 20 seconds high intensity, 2 minutes low, 20 seconds high, 2 minutes low, 20 seconds high, and then 2 minutes of low–for a total of 10 minutes. Of course, how to do HIIT with seniors will differ with each person. A couple of my clients have advanced to the point that we now do 30 seconds high intensity at each interval. Depending on their ability, balance and agility, I use walking on the track, elliptical, NuStep, or a stationary bike. It is sometimes scary at the beginning since many seniors are not used to “pushing it,” for fear of a heart attack, or because they’ve been told that they are too old for that intensity of exercise.
Trainers and seniors alike should be cautious, but from my experience, HIIT can increase cardio capacity, affecting both endurance and power. As my clients progress, I will continue to tweak the formula. Although skeptical at first, I am a believer in HIIT for older adults when done appropriately. I have seen the results myself!