Health Benefits of Electric-Assist Bicycles (E-bikes): Applications for Older Adults and Rehabilitation

Introduction

The rise of electric assist bicycles (E-bikes) is one of the most significant transformations in the cycling industry over the past decade. As a major bicycle manufacturing nation, Taiwan has seen E-bike production and market share continue to climb, with domestic users rapidly expanding from middle-aged and older commuters to seniors, post-surgical rehabilitation patients, and those with chronic conditions. However, a common misconception about E-bikes persists: “Riding an e-bike doesn’t count as exercise.” Recent scientific research is gradually overturning this stereotype.

The Health Benefits of E-bikes: What Does Science Say?

Key Research Evidence

A systematic review published in the Journal of Medical Internet Research in 2019 analyzed 21 E-bike studies and reached the following conclusions:

Key finding: E-bike users often ride more frequently and over longer distances than conventional bicycle users, ultimately accumulating comparable or even higher levels of physical activity.

Cardiometabolic Benefits

A 2020 study from the University of Bristol in the UK followed 100 previously inactive commuters who switched to E-bike commuting. After 12 weeks, the results showed:

• Maximal oxygen uptake (VO2max) increased by an average of 10.5%
• Fasting blood glucose decreased by 0.5 mmol/L
• Body fat percentage decreased by 1.7%
• Systolic blood pressure decreased by 3.1 mmHg

While these improvements are lower than those from high-intensity training, they are highly significant for populations that were previously completely inactive.

E-bike Applications for Seniors

An Ideal Tool for Active Aging

Taiwan is about to enter a super-aged society (population over 65 exceeding 20%), and maintaining physical activity levels among older adults is a critical public health issue. The advantages of E-bikes for seniors:

• Lower entry barrier: The assist function allows older adults with insufficient knee joint or cardiopulmonary function to complete meaningful rides
• Safety considerations: Compared to running, the low-impact nature of E-bikes significantly reduces the risk of joint injury
• Preserved social function: Riders can keep up with faster cycling companions, maintaining participation in social rides
• Extended reach: The assist function allows seniors to explore a wider geographic range, promoting mental health

Recommended E-bike setups for older Taiwanese riders:

• Choose a step-through frame: Eliminates the need to swing the leg high over the frame, reducing the risk of falls
• Choose a mid-drive motor: Lower center of gravity, with better handling stability than hub motors
• Start with moderate assist levels (Eco or Tour mode) to ensure the rider still exerts a reasonable amount of pedaling force
• Speed limit: Taiwanese regulations cap E-bike electric assist at 25 km/h, which aligns with the safety needs of seniors

Fall Risk Assessment

Special attention is needed: E-bikes are heavier than conventional bicycles (typically 20–28 kg). If a rider falls or is unstable when stopping, the risk of being injured by the bike falling over is higher, particularly for seniors with osteoporosis. Recommendations:

• Practice stationary starts and stops on flat ground first (the most common moments for falls)
• Only ride on the road after confirming stability with feet on the ground
• Consider installing a high-quality kickstand to ensure stable parking

E-bike Applications in Post-Surgical Rehabilitation

Post-Surgical Scenarios Suitable for E-bike Rehabilitation

E-bikes are particularly well-suited to the following early post-surgical activity scenarios:

After knee replacement surgery:

• Conventional bicycle rehabilitation has strong evidence, but for patients whose muscle strength has not yet recovered, pedaling resistance may be excessive
• E-bike assistance allows patients to begin light riding 4–6 weeks after surgery, accelerating the recovery of knee joint range of motion
• Assist levels can be gradually reduced as rehabilitation progresses

After cardiac surgery (cardiac rehabilitation):

• Following coronary artery bypass surgery or cardiac stent placement, E-bikes can serve as an alternative tool in cardiac rehabilitation programs
• The assist function ensures heart rate remains within a safe rehabilitation intensity range (50–60% of maximum heart rate)
• Suitable for patients unaccustomed to indoor trainers; the outdoor environment supports psychological recovery

Chronic Obstructive Pulmonary Disease (COPD):

• COPD patients often avoid activity due to shortness of breath, leading to a vicious cycle of muscle atrophy and continued functional decline
• E-bikes allow COPD patients to maintain activity without triggering severe wheezing
• It is recommended to use a pulse oximeter to monitor blood oxygen, maintaining SpO2 > 90%

Practical Recommendations

Key considerations when purchasing an E-bike:

• Assist system brand: Bosch, Shimano STEPS, and Brose are currently the most highly regarded mid-drive motor systems
• Battery capacity: Choose 400–500 Wh or above to ensure sufficient assisted range (80–150 km depending on assist level)
• Display features: Should show the current assist level and remaining battery charge for easy management
• Importance of test riding: The riding feel of an E-bike differs from a conventional bicycle; be sure to test ride before deciding

Riding strategies to maximize health benefits:

• Don’t always use the highest assist mode; try low assist on flat roads and only increase it when you feel exertion
• Set a target heart rate zone for at least 30 minutes per ride to ensure genuine aerobic stimulation
• Gradually increase riding distance and reduce reliance on assistance, allowing the body to adapt to higher exercise loads

Conclusion

The E-bike is a bridge—it connects the worlds of “unable to ride” and “able to enjoy riding,” giving seniors, post-surgical rehabilitation patients, and those with chronic conditions renewed freedom of movement. Scientific evidence has clearly shown that E-bikes deliver real and meaningful health benefits; they are not “cheating” but a smart tool choice. Taiwan’s aging society needs more low-barrier, high-benefit physical activity options like this, and E-bikes are rewriting the definition of what it truly means to “actually exercise.”

Related Reading

• Electric Bicycles and Exercise Rehabilitation: The Gentle Power of Stepping Back on the Pedals
• Cycling and the Environment: The Contribution of Electric Assist Bicycles (E-bikes) to Urban Carbon Reduction
• Taiwan Market Trends for Electric Assist Bicycles (E-Bikes)
• The Science of Human-Machine Collaboration in Electric Assist Bicycles: Quantitative Research on Ebike Riding Efficiency