Isometric Training for Athletes: How and When to Use It | Starke Industries

Most strength training involves movement: lowering and lifting a weight. Isometric training is different. The muscle produces force, but the joint doesn't move. You push or pull against something that won't budge, or hold a position under load.

It's simple, low-equipment, and often underused. This post covers the types of isometrics, what the research reviews say, and how they can fit into an athlete's program.

Two main types

• Yielding isometrics (holds): Holding a position against a load. A wall sit or a paused split squat with dumbbells.

• Overcoming isometrics (pushes and pulls): Pushing or pulling as hard as possible against an immovable object, such as a barbell pinned in a rack.

Both keep the joint still. The intent is different: holding versus trying to move something that won't move.

What the reviews report

Oranchuk et al. (2019). This systematic review looked at medium- to long-term (three weeks or more) adaptations to isometric training across 26 research outputs [1]. Key findings:

• Training at longer muscle lengths produced greater muscle growth than equal volumes at shorter muscle lengths [1].

• Training with ballistic intent (trying to produce force as fast as possible) resulted in greater neuromuscular activation and rapid force production [1].

Lum and Barbosa (2019). This brief review summarized the effects of isometric strength training on strength and dynamic performance [2]. It suggested several uses: adding training without excessive fatigue, improving strength at a specific weak joint position, training movements that are mainly isometric in a sport, and training when injury limits mobility [2]. For maximal strength, it describes isometric work at 80–100% of maximum voluntary contraction, with sustained contractions of 1–5 seconds and total contraction time of 30–90 seconds per session [2]. It also notes that performing isometrics in a ballistic manner can maximize improvements in rate of force development [2].

Why athletes might use isometrics

• Lower fatigue. Short, hard isometrics can produce high force without the soreness of heavy eccentric work, which can be useful in-season.

• Target a position. You can train the exact joint angle where an athlete struggles.

• Rate of force development. Pushing "as fast and hard as possible" trains the ability to produce force quickly.

• Equipment-light. A rack and a bar, a strap, or a wall is often enough.

How to program them

General examples, not prescriptions:

Overcoming isometrics for strength or rate of force development

• Mid-thigh pull or squat push against pins

• 3–5 sets of 3–5 second efforts, maximal intent

• Full rest between efforts

Yielding isometrics for position and muscle

• Split squat holds, wall sits, single-leg holds at a deeper knee angle

• Holds of longer duration at moderate effort

• Longer muscle lengths for hypertrophy, based on the Oranchuk review [1]

Isometric testing vs isometric training

Isometric tests such as the isometric mid-thigh pull are common in force plate testing. Testing and training use similar positions, but they're not the same thing. A test measures force output on a given day. Training builds it over time.

We'll go deeper into the IMTP as a test in a separate post.

Common mistakes

• Low intent on overcoming isometrics. If the athlete isn't pushing hard, the stimulus is small.

• Holding the breath for long efforts. Breathe through longer holds.

• Not choosing angles on purpose. For maximal strength, Lum and Barbosa describe training at multiple joint angles or at a targeted joint angle [2]. Pick positions for a reason.

• Replacing all dynamic training. Isometrics complement dynamic work. They don't replace jumps, sprints, and full-range lifts.

Where isometrics fit during the season

During a long season, athletes often have limited time and energy for lifting. Short isometric work can be a practical way to maintain some strength without much soreness. A few hard pushes at the start of a lifting session, or holds at the end, take only a few minutes.

Questions athletes ask

Will holds make me slower? There's no reason to think so when they're part of a complete program. Ballistic-intent isometrics specifically train rapid force production [1, 2].

Can I do isometrics every day? Low-intensity holds, possibly. Maximal-intent pushes are demanding, so treat them like any heavy lift and allow recovery.

A sample in-season isometric block

General example only:

1. Warm-up. 2. Overcoming mid-thigh pull against pins: 3 sets of 3 efforts, about 3 seconds each, maximal and fast intent, full rest. 3. Split squat hold at a deep position: 2 sets of 20–30 seconds per side. 4. Copenhagen or side plank holds.

That takes about 15 minutes and can sit alongside practice without adding much soreness.

The bottom line

Isometrics are a simple, flexible tool. Use longer muscle lengths for muscle, maximal and fast intent for force production, and fit them alongside dynamic training rather than instead of it.

Related reading

• Summer Off-Season Training for High School Athletes: How to Plan the Break
• Training in the Heat: Heat Illness Basics for Summer Workouts
• Squat Jump vs. Countermovement Jump: What the Difference Tells You
• Single-Leg vs. Double-Leg Jumps: Why Test Both
• Sprint Testing 101: 10 m, 20 m, and the 40-Yard Dash
• Back to School: Getting Ready for Fall Sports Tryouts
• The Nordic Hamstring Exercise: What the Research Says
• The Copenhagen Adductor Exercise for Field and Ice Athletes

References

• Oranchuk DJ, et al. Isometric training and long-term adaptations: effects of muscle length, intensity, and intent: a systematic review. Scand J Med Sci Sports. 2019;29(4):484–503. https://doi.org/10.1111/sms.13375 (online Jan 13, 2019)
• Lum D, Barbosa TM. Brief review: effects of isometric strength training on strength and dynamic performance. Int J Sports Med. 2019;40(6):363–375. https://doi.org/10.1055/a-0863-4539 (online Apr 3, 2019)
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