Max Hangs vs Repeaters: Which Hangboard Protocol Is Right for You?

Two Philosophies of Finger Training

At their core, max hangs and repeaters represent two different approaches to building stronger fingers.

Max hangs chase pure strength. Short, heavy efforts with long rests. Your nervous system learns to recruit more muscle fibers and produce more force on a single hold. Think of it like a deadlift for your fingers. Building raw finger strength is what they do best.

Repeaters chase strength endurance. Moderate efforts with brief rests, repeated until fatigue. Your fingers learn to keep producing force even as metabolic byproducts accumulate and blood flow gets restricted. Think of it like high-rep training that mimics the grip-release-grip pattern of actual climbing.

Both belong in a well-designed hangboard training plan. The question is which one deserves the spotlight in your current training phase.

Max Hangs: Pure Finger Strength

The MaxHangs protocol was developed and popularized by Eva Lopez-Rivera, a Spanish elite climber (8c+), coach, and sports scientist who earned her PhD studying finger strength training. Her research at the Universidad de Cadiz produced some of the most rigorous data we have on hangboard training.

How Max Hangs Work

The protocol is simple: hang with high intensity for short durations, rest fully, and repeat.

The key concept is the margin before failure. Lopez recommends choosing a load where you could hang for about 3 seconds longer than your prescribed hang time. If you are doing 10-second hangs, pick a weight or edge where your absolute max would be around 13 seconds. This keeps intensity high while managing fatigue across the session.

Loading Methods

There are two ways to add load in a hangboard training program built around max hangs:

1. Maximum Added Weight (MAW): Pick a comfortable edge (18-20mm) and add weight via a harness or belt. This is the most common starting point.

2. Minimum Edge Depth (MED): Use bodyweight only, but on progressively smaller edges. This is especially useful if you do not have weight equipment.

Lopez's research tested both methods in sequence: 4 weeks of MAW on 18mm edges followed by 4 weeks of MED on smaller edges. This combination produced significant strength gains across her test subjects.

What the Research Shows

Lopez-Rivera and Gonzalez-Badillo (2019) compared three 8-week hangboard training programs in 26 sport climbers averaging 7c+/8a. The MaxHangs group showed a 34.1% improvement in grip endurance alongside their strength gains. Her earlier work demonstrated that max hangs produce rapid neural adaptations, meaning your fingers learn to recruit more muscle fibers before any structural changes happen in the tendons.

For the full breakdown of Lopez's methods, see our Eva Lopez protocol guide.

Repeaters: Strength Endurance Under Fatigue

The repeater protocol was popularized by Mark and Mike Anderson in The Rock Climber's Training Manual and has been refined by coaches at Lattice Training and other programs. Where max hangs target pure force production, repeaters target the ability to produce force repeatedly under fatigue.

How Repeaters Work

One set of repeaters takes a full minute: six cycles of 7 seconds on, 3 seconds off. That accumulates 42 seconds of time under tension with only 18 seconds of partial recovery scattered throughout. The brief rest periods mimic the micro-rests you get between moves on a hard route.

Why Repeaters Build Endurance

The magic of repeaters is the restricted recovery. Three seconds is not enough time for your forearms to fully recover between reps. Each successive rep demands force production against increasing fatigue, which is exactly what happens on sustained climbing sequences.

Lopez-Rivera's research confirmed this: the IntHangs (intermittent dead hangs, her term for repeaters) group showed a 25.2% improvement in grip endurance after just 4 weeks, and 45% after the full 8-week cycle. No other protocol in her study matched that endurance gain.

Repeaters also create meaningful training volume. A session with 4-5 grip positions and 2 sets each produces around 8-10 minutes of total time under tension. That volume drives capillary development, local metabolic efficiency, and forearm hypertrophy over time.

For a complete repeater walkthrough, see our repeater protocol guide.

Abrahangs: Sub-Maximal Frequency Training

The Abrahangs protocol takes a completely different approach to hangboard progression. Developed by Emil and Felix Abrahamsson, it is built on the collagen synthesis research of Keith Baar (2017, PMC5371618) and uses sub-maximal loading twice per day instead of maximal efforts a few times per week.

The Science Behind Abrahangs

Baar's 2017 paper "Minimizing Injury and Maximising Return to Play" found that engineered ligament tissue becomes refractory (unresponsive to new stimulus) after approximately 10 minutes of loading. It then needs 6+ hours before it responds to new mechanical stimulus again. The Abrahamssons applied this finding to hangboard training: if tendon tissue can only respond to a limited window of loading, why not train twice per day with short, sub-maximal sessions separated by 6+ hours?

How Abrahangs Work

Emil's actual session structure: 3 x 10s half crimp on 14mm edge, 3 x 10s three-finger drag on a large edge, 2 x 10s pocket work, 2 x 10s pocket half crimp, with ~50 seconds rest between each set.

The key distinction: Abrahangs are "no-hangs." Your feet stay on the ground and you load your fingers at roughly 70-80% of the weight it would take to lift off. This is not maximal effort. It is controlled, sub-maximal loading designed to stimulate tendon adaptation without accumulating fatigue.

Results

Emil went from BW+48kg to BW+67kg on a 14mm edge in half crimp over 30 days. Felix gained 10kg on his two-arm hang. Those are remarkable numbers for a protocol that never involves maximal effort.

Hooper's Beta did a thorough follow-up analysis in 2023, concluding that the gains are real but the exact mechanism is debated. Baar's original work was in-vitro (lab-grown sinew tissue, not living human tendons), so whether the collagen synthesis window works exactly the same way in real tendons is still being studied. The protocol works regardless of whether we fully understand the "why."

Why Abrahangs Stand Out

The hangboard progression you get with Abrahangs happens through frequency rather than intensity. Instead of training hard twice a week, you train light every single day, twice a day. This makes it a compelling option for anyone who wants to fit training into a busy schedule since each session takes under 3 minutes.

Protocol Comparison Table

Which Protocol Fits Your Climbing?

Choosing the right hangboard training program comes down to what you are training for right now.

Bouldering and Short Power Cruxes: Max Hangs

If your climbing involves short, intense sequences where you need to stick a single hard move, max hangs are your priority. Bouldering rewards pure finger strength: the ability to generate maximum force on a single hold. Max hangs develop exactly this quality with minimal fatigue, so you can pair them with hard climbing sessions without burning out.

Route Climbing and Sustained Sequences: Repeaters

If you are projecting routes with long crux sections or endurance-heavy sequences, repeaters should be your primary hangboard training plan. The ability to grip, release, and grip again without pumping out is what separates sending from falling on routes. Repeaters mimic this demand directly.

General Strength Building and Busy Schedules: Abrahangs

If you want to build finger strength alongside your normal climbing and training without adding heavy fatigue, Abrahangs offer a unique path. The sub-maximal loading and daily frequency make hangboard progression feel almost effortless on any single day while accumulating significant adaptation over weeks. Our 10-minute hangboard workout is built around this approach. Abrahangs also work well for climbers returning from time off who want to rebuild tendon capacity gradually.

New to Hangboard Training: Start with Repeaters

If you have never followed a structured hangboard training program before, our hangboard beginners guide is a great starting point. Repeaters at moderate intensity give you the most room to learn good form, build work capacity, and develop a baseline of finger strength. Start on a comfortable edge and learn the different grip types, use a beginner hangboard workout to learn the ropes, and branch out from there.

Combining Protocols and Periodization

The most effective approach to long-term hangboard strength training is not picking one protocol forever. It is cycling through them based on your training phase and goals.

Simple Periodization Model

A straightforward approach to periodization:

1. Base phase (4-6 weeks): Repeaters. Build work capacity and strength endurance. Get your tendons accustomed to regular loading. This works well as your hangboard training plan early in a training cycle.

2. Strength phase (4-6 weeks): Max Hangs. Shift to high-intensity, low-volume work. This is where your max finger strength jumps. Use weighted hangboard training or minimum edge protocols.

3. Performance phase (2-4 weeks): Reduced volume, maintain strength. Back off the hangboard and focus on climbing. One max hang session per week is enough to maintain gains.

Lopez's Research-Backed Combination

Lopez-Rivera tested a combined approach: 4 weeks of MaxHangs (MAW on 18mm) followed by 4 weeks on minimum edge depth. This combination produced strength gains while also building endurance. It is a solid template for anyone who wants both qualities from a single 8-week hangboard training plan.

Adding Abrahangs

Abrahangs work well as a standalone 4-8 week cycle between heavier training blocks, or as a daily supplement alongside less intensive climbing phases. Because they generate almost no fatigue, they layer on top of other activities without competing for recovery resources.

Year-Round Example

This kind of structured rotation keeps your hangboard training program fresh, prevents plateau, and ensures you develop all the finger qualities that translate to climbing performance.

Frequently Asked Questions

Start Building Your Program

Now that you understand the three major hangboard training program approaches, pick the one that fits your current goals and commit to a 4-8 week cycle. Track your numbers, stay consistent, and adjust based on what you learn.

Check out The Hangboard for boards designed to support every protocol, from jug rails for Abrahangs warm-ups to small edges for max hang progressions. You can even combine finger training with upper-body work through hangboard pull-ups. Our best hangboards guide compares the top options for structured training. And if you want the full picture of fingerboard training methods, our hangboard training hub connects everything.

Stronger fingers start with the right protocol. For the big-picture view on everything from board selection to mounting to progression, see our complete hangboard guide. Pick a protocol, get after it, and see where your climbing goes.