9 Secret Resistance Training Principles for a Perfect Workout
- Ryan Fritz
- Apr 16
- 5 min read
Unlocking the Science of Strength, Size, and Speed

When we look at strength training, you'll never see someone come up with a perfect workout without some planning beforehand. An ideal workout isn't built on guesswork or vibes alone, but rather with a strategic blend of certain resistance principles - based in science, tested by athletes, and refined over time.
No matter if you're training for strength, size, endurance, or athleticism, understanding these not so well-known resistance training principles will help you train smarter, not just harder.
Let's look at 9 amazing resistance principles that can take your workouts to the next level. Consider this as your guide towards building a more intelligent and effective training plan. Just keep reading!
1. Miometric (Dynamic) Contractions: Foundation of Strength Work
Miometric contractions, better known as dynamic or isotonic movements, are your classic "lift and lower" exercises - think of squats, deadlifts, bench press. These contractions involve both concentric (muscle shortening) and eccentric (muscle lengthening) phases.
Here's the golden rule for rep ranges:
- Strength: 3-5 reps
-Hypertrophy (muscle building): 6 - 12 reps
- Endurance: 15+ reps
That's right - the same move can train different qualities depending on how you execute them. A 3-rep heavy back squat builds raw strength, and a 12-rep set of course builds your quad muscles. What about a 25 goblet squat? Now we're talking muscular endurance. The key is in the programming.
2. Isometric Training: The Static Powerhouse
Isometrics are a simple yet very effective resistance training technique where you hold a muscle contraction without changing joint angles. Basically, no movement - however don't confuse that with "easy."
There are two main factors:
- Yielding Isometrics: You resist an external force. Think holding a wall sit or pausing halfway down a squat.
- Overcoming Isometrics: You push against an immovable object. Think pressing into pins at the bottom of a bench press or pulling against a locked barbell.
Isometric work is incredible for:
1. Max effort strength
2. Injury prevention
3. Rehabilitation
You can always add isometrics into warm-ups, as finishers, or sprinkle them throughout your workouts to increase joint stability and control.
3. Tempo Training: Speed Matters
Tempo is all about controlling speed of each phase of a lift. It's written as a series of four numbers, like this 5:3:3:1.
Here's is a breakdown:
- First part: Eccentric (lowering) phase
- Second part: Isometric pause at the bottom
- Third part: Concentric (lifting) phase
- Fourth part: Pause at the top
For example:
A 5:2:6 tempo Romanian deadlift = 5 seconds lowering, 2-second pause at the bottom, 6 seconds up, then go again.
Slow tempos increase time under tension - which is perfect for hypertrophy, movement control, and fixing form errors. They are absolutely an amazing addition to your workouts.

4. Plyometrics: The Explosive Edge
Despite popular belief, plyometrics are more than just box jumps - they are a serious performance enhancer grounded in neuromuscular science. The base is in stretch-shortening cycles (SSC) that build explosive speed and power.
For example:
- Depth jumps from a box to the floor, then immediately jumping vertically
- Smith machine bench where you explode the bar of your chest
Plyos recruit fast-twitch muscle fibers, which are crucial for sprinting, lifting heavy, and athletic explosiveness.
Even for bodybuilders or casual lifters, adding in plyos improves muscle recruitment and CNS activation. Use them at the start of your workout, when you're fresh.
5. Overload Eccentrics/Negatives: The Art of Getting Stronger
Most lifters dislike negatives, simply because they are challenging. But, you should embrace them.
Overload eccentrics involve using 100-150% of your 1RM during the lower phase of a lift. You may need a spotter or specialized equipment (such as weight releasers), but the gains are real.
Example: Weighted pull-ups, 3 reps at 100% 1RM, 4-second eccentric, assisted concentric (with spotter)
Why it works:
- You can handle more weight eccentrically than concentrically
- Better muscle fiber activation = more hypertrophy
- Massive mental toughness
Use this method sparingly, 1x per week max and only when well-recovered. These are for more advanced lifters chasing breakthroughs.
6. Concentric Training: Less Soreness and More Power
This one always flies under the radar: concentric-only training focuses purely on the muscle shortening phase, eliminating the eccentric (lowering) part of a movement entirely.
Examples:
- TRX sled pulls: walk backwards dragging a sled, using only your upper back and arms to pull
- Dead-stop deadlifts from blocks or pins
- Reverse sled drags for quads
Why use these?
- Less muscle damage = faster recovery
- Greater CNS stimulation
- Ideal for peaking or high-frequency training
Implement this occasionally, think of concentric-only work as a "sprint training" for your muscles.
7. Ballistics: Faster Movement
This method is all about moving submaximal weights with maximum speed. You're not trying to pump out reps - you're trying to launch the bar.
- Use 50-70% of your 1RM
- Do 6-8 sets of explosive reps
- Focus on bar speed, not fatigue
Perfect for:
- Building explosive strength
- Better force production
- Overcoming plateaus in traditional lifts
8. Post-Activation Potentiation (PAP): Prime for Power
This is where science and strategy meet. PAP is a phenomenon where a heavy lift "preps" your nervous system, making future explosive movements more effective.
Example protocol:
- Do a heavy back squat (85-90% 1RM x 3 reps)
- Rest 2-3 minutes
- Perform vertical jumps or broad jumps
You'll jump higher, sprint faster, and lift heavier with this trick overtime. PAP taps into heightened motor unit recruitment, meaning your muscles are more "awake" after a heavy stimulus. However, use PAP sparingly, typically in low-volume strength or power workouts.
9. Contrast Training: Strength and Speed
Contrast training is like a hybrid of all previous methods. You combine a heavy lift with a plyometric or explosive movements for the same muscle group:
Example combo:
- Heavy trap bar deadlift x 3 reps
- Rest 90 seconds
- Kettlebell jump squat x 6 reps
Benefits:
- Builds both strength and power simultaneously
- Promotes neural pathways
- Burns more calories (great for weight loss)
Truly advanced but effective - especially for athletes or anyone looking to be strong and fast.
Conclusion
The methods we reviewed today are the real deal, they are not fads. Pick 1-2 resistance training principles and add them to your current program, Apply for 4-6 weeks, track your results, and watch your progress explode!
Want personalized help building a program such as this one? Contact me for coaching, and we'll make it happen. Stay strong!
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