Why Time Under Tension and Tempo Work Will Make You Stronger

Most of us train with one goal in mind: move the weight from Point A to Point B. We focus on the load, the rep count, and a sense of what our total volume for the day will be. What we often miss is how the speed and control will impact and manipulate our progress.

Now, let’s be real. Not like we do a ton of tempo and time under tension work because honestly, it can get a little tedious if you overdo and most of our members want to come in and move.

But for this week, here is where time under tension (TUT) and tempo work will benefit your training.

What is Time Under Tension?

Time under tension refers to the total amount of time a muscle is actively working during a set. The longer your muscles are under load, the greater the mechanical stress and metabolic fatigue, both of which are strong drivers of muscle hypertrophy and strength.

A study in the European Journal of Applied Physiology (Schoenfeld et al., 2015) found that longer eccentric phases led to greater hypertrophy without sacrificing strength gains.

This means controlling your rep speed can directly influence your gains.

What is Tempo Work?

Tempo training manipulates TUT by assigning specific speeds to each phase of a lift:

  • Eccentric (lowering): often slowed to increase muscle damage and control

  • Isometric (pause): holding a position to eliminate momentum and build stability

  • Concentric (lifting): performed with either maximum intent or strict control

For week three of “Jacked & Tan”, we’re going to see this predominantly channeled in speed work, with the greatest output of it coming on Friday for band-resisted deadlifts.

Why It Works

  1. Increased Muscle Fiber Recruitment: Slower, controlled reps keep tension on the muscle longer, forcing more motor units to fire.

  2. Improved Weak Points: Pauses and slower phases build strength in the positions where you are usually weakest.

  3. Better Technique: Tempo work forces precision because you cannot rely on momentum.

  4. Joint-Friendly Progression: By altering tempo, you can increase difficulty without always increasing load. For example, for our Friday band-resisted deadlifts, we are able to overload the lock out muscles (glutes) and give the lift off muscles (lower back) a reprieve.

Banded Resistance with Tempo

When you add bands to lifts like deadlifts, the resistance increases as you move upward, called variable resistance. It forces your muscles to keep producing force through the full range of motion, especially in the stronger lockout positions.

Research from the Journal of Strength and Conditioning Research (Anderson et al., 2008) showed that variable resistance training with bands significantly improved maximal strength compared to free weights alone.

Combining this with tempo work maximizes tension from start to finish and stimulates both strength and hypertrophy adaptations.

Takeaway
Time under tension and tempo work increase the quality of your reps and stimulate more muscle growth without relying solely on heavier loads. Adding banded resistance increases the challenge where you are typically strongest, creating a complete strength and muscle-building tool.

If you want to lift heavier, build more muscle, and improve control over every rep, slow down, own your tempo, and let the tension do its work.