Time Under Tension

Q: In relation to the Time Under Tension (TUT), I found little scientific thing, it could be made a deeper work of the following form. It could be made a goal-analysis on the theme, filtering as you beat that you want for example: studies that verified hipertrofia, done in certain sample, they informed the time of each repetition, later make a crossing of the data, giving an appropriate statistical treatment, so that he/she can have indications of the relevance that the total time of contraction can have.

Does it agree with my idea???

A: Ricardo, you are correct in that there is very little scientific research that backs up the TUT theory completely but there is some evidence available - see Schoenfeld, Brad. 2000: Repetitions and Muscle Hypertrophy. Strength and Conditioning Journal : Vol. 22, No. 6, pp. 67-69.

Also, Poliquin addressed this issue in the past - here is an excerpt:

"The time-under-tension figures are the results of scientific research on substrate utilization curves, motor unit recruitment, and exercise protocol comparisons, to name a few, plus the practical experience of myself and other strength coaches.

Keep in mind that I have also mentioned many times before that empirical and experimental evidence have shown that hypertrophy can occur with sets of time-under-tension that are below 20 seconds. There are plenty of massive powerlifters, e.g., Roger Estep, and weightlifters like Arakelov and Rigert who have developed extraordinary hypertrophy levels using sets of 3 reps or less. That is why I advocated low-rep training in my "Maximal Weights" article. Over the years, I have built my arms up to over 19 inches in girth with sets averaging only 3 reps.

Conversely, training for hypertrophy with sets that are between 40-70 seconds long in duration will also increase maximal strength, as there is a correlation between size increases and strength increases, but not necessarily a correlation between strength and cross-section. In other words, Bob with a 14-inch arm may curl and press more than his training partner Bill, who has a 16 inch-arm. Of course, if you increase Bob's cross-section to the point where he has a 16-inch arm, you can be sure his maximal strength will further increase." www.t-nation.com