When the SPU was tested, the whole-body effects on blood chemistry included a 52% improvement in the excursion of blood glucose (sugar) and 60% less insulin requirement over three hours after ingesting a glucose drink.
The new approach of keeping the soleus muscle metabolism humming is also effective at doubling the normal rate of fat metabolism in the fasting period between meals, reducing the levels of fat in the blood (VLDL triglyceride).
Has anyone done any testing to see if these results are real? Given the magnitude they claim seems like some N=1 experiments pick up the effects.
I have only tried standing SPUs, about one set of 60 per day. I can tell you that my calves definitely feel stronger and I am pretty sure it has improved my balance. Given that many fatalities in humans begin with a fall, having stronger calves and balance would increase lifespan. Also, it’s darn easy to do a set of 60 SPUs while standing.
Now, to get the amazing metabolic effects, I think you need to be sitting and doing SPUs for hours on end. I don’t have the time for that as it is distracting.
Good luck. Over the past couple years I’ve started to prioritize fundamental movement skills, as well as emphasizing running and various jumps in my workouts. At the same time, I’ve drastically reduced my volume of weight lifting for my lower body. At age 38, I can honestly say I’ve never moved better or felt better, and I almost never have heavy weights on my back, which really saves my back and knees a lot of wear and tear.