Spend any time working with a certified personal trainer and you are bound to hear the phrase “time under tension.”
Time under tension refers to how long the muscle is under strain during a set. This includes the time spent in the concentric (shortening) phase, peak contraction phase, and eccentric (lengthening) phase. So, for example, if it takes three seconds to complete a rep during a 10-rep set you muscles will spend 30 seconds of time under tension.
But if you slow down just a little bit — spending two seconds lifting, one second pausing and three seconds lowering the weight — those same 10 reps give your muscles 60 seconds of work and increases your results.
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The best part is that it is the time you work your muscles, not necessarily the amount of weight you use, that delivers the payoff. Your muscles don’t know how much weight they are lifting, they only feel the load and tension, so the more time they spend under tension the more results you’ll see.
It is important to make sure your sets last long enough to give your muscles enough of a workout to spur muscle growth. The minimum time is 30 to 40 seconds, with 60 seconds being the maximum.
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How long you perform a set is important, but be sure to also pay attention to how you are performing the set. Here are some tips, according to Men’s Fitness, for getting the most out of your workout:
- Beware the lockout: Avoid spending long amounts of time during the easiest portion of an exercise (at the top of a bench press for instance). The easiest part of a lift presents the least amount of stress on your muscles.
- Try to maintain a steady tempo: A typical tempo in seconds for each rep during a set would be 2/4/0 (lifting, lowering, pause).
- Spend more time on the eccentric portion of the movement: That refers to the lowering portion when your muscle is slowly elongating. Slowing down the eccentric portion of the lift causes more muscle damage and hence encourages more growth.
- Focus on form: With the longer sets, fatigue will set in and compromise form. Make sure you don’t cheat yourself and miss out on gains by breaking form or doing partial reps.
- Use drop sets to help you: Struggling to finish off those last few reps, drop down in weight and immediately continue the exercise. You’ll last the entire duration of the set and won’t need to cheat to get through it.
- Maintain a high intensity: Simply lifting till the buzzer doesn’t guarantee increases in size. The weight and exercise need to be challenging enough to cause muscle fatigue toward the end of the set. Use at least 60 percent of your 1-rep max for a lift to maximize gains.
To learn more about developing a proper exercise program, give us a call at 216-831-3674 or email us at info@ampfitness.com to talk with one of our certified personal trainers.









