Sports Scientist Reveals Vertical Bounce Wastes More Energy Than Any Other Running Mistake (And How to Fix It)

Running faster for longer isn’t just about logging more miles—it’s about understanding the science behind every stride, every breath, and every meal.

Sports scientist, physiotherapist, and former professional triathlete Nicholas has spent years helping thousands of runners shatter their personal records, and his latest breakdown covers everything from biomechanics to nutrition.

What he reveals might change how you think about training entirely.

Whether you’re chasing a 5K PR or tackling your first marathon, the strategies he outlines combine cutting-edge research with practical, actionable advice.

The Two Components That Determine Your Speed

Speed breaks down into two fundamental elements: biomechanics and physiology.

To run faster, you can either take longer steps, increase your step frequency, or combine both approaches. But which method actually delivers results?

Ground Contact Time: The Overrated Metric

Many runners obsess over minimizing ground contact time—how long each foot stays planted during a stride.

A 2024 meta-analysis examining running biomechanics and running economy found something surprising: ground contact time appears to have no significant effect on running efficiency. Whether your foot lingers or springs quickly doesn’t seem to impact energy expenditure much at all.

Cadence: Small Gains That Add Up

Step frequency tells a different story.

Runners who maintain higher cadence—more steps per minute—tend to demonstrate slightly better efficiency. Increasing your step rate can genuinely help you sustain speed over distance.

Research from a 2022 meta-analysis showed that boosting step rate by just 10% reduces impact forces on knees and hips. If you typically run at 160 steps per minute and increase to 176, your joints absorb less pounding with each footfall, potentially preventing knee pain and overuse injuries.

Vertical Oscillation: The Real Efficiency Killer

The biggest biomechanical factor? Vertical movement.

Excessive bouncing wastes precious energy that could propel you forward instead. Runners who minimize up-and-down motion demonstrate markedly better running economy.

If you reduce excessive vertical movement then you tend to have a better running economy because you don’t waste energy bouncing up and down and you can use that energy that you save to make you go forward.

Focus on smooth, forward propulsion rather than bouncy strides.

Why Biomechanics Only Tell Part of the Story

Here’s the reality check: biomechanics account for only 4 to 12% of differences in running economy between athletes.

Fitness level and muscular efficiency play far more substantial roles. That means your training structure matters much more than obsessing over perfect form.

Decoding Training Zones: The Three-Zone System

Training zones can feel confusing—some coaches use three, others five or even seven.

Scientifically, endurance training really boils down to three distinct zones, divided by lactate thresholds.

Understanding Lactate Thresholds

Lactate is a molecule your body produces increasingly as exercise intensity climbs. At moderate intensity, lactate begins accumulating in your bloodstream—this marks your aerobic threshold or first lactate threshold (LT1).

Push harder, and lactate levels spike dramatically. This steep rise defines your anaerobic threshold or second lactate threshold (LT2).

These thresholds create three training zones:

• Zone 1: Below LT1 (roughly under 70% max heart rate) – Easy effort
• Zone 2: Between LT1 and LT2 (approximately 70-90% max heart rate) – Moderate effort
• Zone 3: Above LT2 (over 90% max heart rate) – Hard effort

Training Intensity Distribution: How to Divide Your Effort

Knowing the zones is one thing. Allocating training time across them strategically? That’s where performance gains happen.

Three evidence-based training intensity distributions (TID) dominate endurance research:

Pyramidal Model

• 80% Zone 1
• 15% Zone 2
• 5% Zone 3

80/20 Distribution

• 80% Zone 1
• 0-5% Zone 2
• 15-20% Zone 3

Threshold Training

• 55-60% Zone 1
• At least 35% Zone 2
• 0-5% Zone 3

But don’t just pick one and stick with it forever.

Periodization: The Master Plan Behind Elite Performance

Scientists have discovered that mixing training intensity distributions across different training phases produces superior results compared to static programming.

Periodization is the big-picture framework—how training intensity evolves over time to peak when it matters most.

The Four Phases of Linear Periodization

Base Phase: Building aerobic endurance foundation. Most training stays low-intensity, following pyramidal distribution.

Build Phase: Increasing race-specific intensity. Training shifts toward threshold work with more Zone 2 emphasis.

Peak Phase: Fine-tuning performance with VO2 max intervals and speed drills. An 80/20 model works well here.

Taper Phase: Volume drops but intensity remains. Recovery takes priority while maintaining sharpness, often keeping 80/20 distribution.

Each phase builds deliberately on the previous one. You don’t jump straight into high-intensity training—progression happens gradually, allowing your body to adapt systematically.

VO2 Max vs. Running Economy: Which Matters More?

Most athletes fixate on VO2 max—how much oxygen your body can utilize.

But a 2010 scientific review revealed something counterintuitive: VO2 max isn’t the best race performance predictor.

While VO2 max sets your ceiling, running economy—how efficiently you use that oxygen—better predicts who crosses the finish line first. Think fuel efficiency: two cars with identical engines perform differently if one burns fuel more smartly.

Superior running economy means using less oxygen at any given pace, letting you sustain faster speeds longer.

Four Ways to Boost Running Economy

1. Strength Training

A 2024 systematic review confirmed that strength training improves running economy in highly trained runners by increasing force production and reducing oxygen demand.

The most effective exercises? Squats, deadlifts, and power cleans for lower body strength. Bulgarian split squats and other single-leg movements develop balance and stability—both crucial for efficient mechanics.

2. Plyometrics

Plyometric training teaches your body to use stored elastic energy more efficiently.

Box jumps, standing tall jumps, and bounding drills work exceptionally well for runners looking to improve power and efficiency.

3. Five Essential Workout Types

Balance these five workout categories to build complete endurance fitness:

• VO2 Max Intervals: 4×3 minutes at best average pace with 2-minute recovery, or classic 10×800m all-out with 200m jog recovery
• Short Hill Sprints: 10-second bursts to develop power and efficiency
• Tempo Runs: 3×10 minutes near LT2—sustainable but challenging pace
• Long Easy Runs: Foundational endurance building
• Recovery Runs: Balance training intensity distribution

When you push hard then recover, your body adapts by getting stronger and more efficient. Over time, race day feels easier.

4. Coordination Drills

Running economy isn’t just about strength and endurance—it’s about moving smoothly and efficiently.

A-skips, B-skips, and high knees reinforce proper posture, foot strike, and stride mechanics. These drills fine-tune your running “engine” so everything operates more efficiently.

The Critical Importance of Recovery

More training isn’t always better. Overtraining reduces neuromuscular efficiency and dramatically increases injury risk.

A 2023 meta-analysis found that optimal performance requires approximately 21 days of taper before major races, plus deload weeks (reduced training volume) every 3-4 weeks.

Recovery isn’t weakness—it’s when adaptation actually happens.

Nutrition: Fueling Peak Performance

Proper nutrition can mean the difference between smashing records and bonking mid-race.

Carbohydrates: Your Primary Fuel Source

A 2017 scientific review confirmed that carbohydrates provide the most efficient, fastest energy for high-intensity running—making them essential for everything from 5Ks to marathons.

Daily carbohydrate needs scale with training load:

• Light training days: 3-5g per kg body weight (1.4-2.3g per pound)
• Moderate training days: 5-7g per kg (2.3-3.2g per pound)
• Heavy training/race days: 8-12g per kg (3.6-5.5g per pound)

Mid-Run Fueling Strategy

For runs exceeding 60 minutes, consume 30-60g carbohydrates hourly.

With gut training, athletes can absorb up to 90g per hour—one reason ultramarathons and Ironman races become “eating competitions” as much as endurance tests. Athletes who absorb more carbs hold massive advantages.

Research suggests optimal mid-run carbohydrate composition is a 2:1 ratio of glucose to fructose, which speeds absorption and minimizes stomach distress. Most major sports drink brands follow this formula.

Protein for Recovery

A 2017 review found that approximately 1.6g protein per kg body weight daily (roughly 1g per pound) supports muscle building and endurance adaptation.

Despite widespread focus on post-workout protein timing, total daily intake matters far more than when you consume it. Just aim for protein at every meal.

Best sources include lean meats, fish, poultry, eggs, and protein supplements.

Hydration and Electrolytes

Even 2% body weight loss through sweat impairs speed and power output significantly.

Daily hydration targets:

• 35-45ml per kg body weight (0.5-0.7 ounces per pound)
• Plus 500-750ml per hour of exercise, adjusted for individual sweat rate

The American College of Sports Medicine recommends 300-600mg sodium per hour during prolonged exercise, plus 100-200mg potassium (though most diets provide adequate potassium).

Sports drinks, electrolyte tablets, and coconut water make hitting these targets straightforward.

Race Day Nutrition Timing

A 2011 study demonstrated that pre-run carbohydrate-rich meals optimize glycogen stores and sustain energy through races.

2-3 Hours Before Racing

• 1-4g carbohydrates per kg body weight
• 10-20g protein for muscle support
• Low fat to prevent digestion issues

During Races Over 60 Minutes

• 30-60g carbohydrates per hour (2:1 glucose-to-fructose ratio)
• 300-500mg sodium per hour
• 100-200mg potassium per hour

Post-Race Recovery

• 1g carbohydrates per kg body weight within 30 minutes to replenish glycogen
• 20-40g protein for muscle repair
• Rehydrate with electrolytes

Gear That Actually Makes a Difference

Can equipment genuinely boost speed? Sometimes, yes.

Carbon-Plated “Super Shoes”

A 2018 study found that carbon-plate shoes improve running economy by an average of 4%.

Whether that justifies the premium price depends on your goals and budget, but for competitive runners, that edge can translate to meaningful time improvements.

Heart Rate Monitors and Foot Pods

These devices help dial in pacing and training zones. However, research shows excessive tracking can backfire—obsessing over data sometimes harms performance rather than helping.

Use technology intelligently, not compulsively.

Supplements: What Actually Works

Most supplements promise far more than they deliver.

Research supports only a handful for endurance runners:

• Caffeine: Proven performance enhancer
• Beta-alanine: Improves endurance capacity
• Creatine: May help sprint performance but doesn’t boost VO2 max or endurance
• Ketones: Emerging research shows promise, but more study needed

Save your money on unproven supplements and invest in quality training, recovery, and nutrition instead.

The Complete Formula for Running Faster, Longer

Running performance isn’t about one magic trick—it’s the synergy of smart training, strategic periodization, optimized biomechanics, proper fueling, and adequate recovery.

Focus on minimizing vertical oscillation and maintaining slightly higher cadence. Structure training across periodized phases with appropriate intensity distribution. Build running economy through strength training, plyometrics, targeted workouts, and coordination drills.

Fuel intelligently with sufficient carbohydrates, protein, and hydration tailored to training demands. Allow proper recovery with regular deload weeks and pre-race tapers.

When all these elements align, you’ll discover that running faster for longer isn’t about grinding harder—it’s about training smarter.