For fitness enthusiasts and those just starting their fitness journey, the treadmill remains one of the most popular and effective indoor exercise machines. With its ability to accurately control speed, incline, and time, it caters to both beginners and seasoned athletes, providing a versatile platform for achieving various fitness goals.

Understanding Caloric Burn on the Treadmill

The treadmill is one of the top calorie-burning machines in the gym. While many think running primarily works the lower body, it actually engages almost all major muscle groups, making it a full-body workout. This broad engagement results in significant caloric expenditure, varying with different running speeds.

For example, a 60kg woman and an 80kg man will burn a considerable number of calories from slow jogging at 6km/h to fast running at 14.5km/h. A man running at 12km/h can burn over 1000kcal, which is equivalent to the energy expended during 8-10 hours of desk work. Although not everyone can sustain such speeds and durations, these figures provide a useful reference.

Walking briskly on a treadmill is also effective, especially for those with higher body weight and fat. High-impact aerobic exercises can be harmful due to the increased risk of joint injuries. Fast walking minimizes knee joint cartilage damage compared to running. Generally, a waist circumference over 85cm for men and 75cm for women suggests that gentler aerobic exercise is more appropriate.

However, it's important to note that running burns more calories than walking at the same speed. For individuals with normal weight, running at 5.8km/h burns significantly more calories than walking at the same speed, making it a better choice for effective fat loss.

Protecting Your Knees on the Treadmill

One common concern about running is its impact on the knees. It's true that running involves significant knee movement, which can lead to wear and tear over time. Fortunately, adjusting the treadmill's incline can help protect your knees.

Optimal Incline for Knee Protection

Research indicates that ground reaction forces are closely related to chronic exercise injuries, particularly those affecting cartilage and ligaments. To minimize knee joint damage, it's crucial to monitor the tibiofemoral platform force. A 2°-5° incline significantly reduces this force, thereby protecting the knee cartilage.

Additionally, foot pressure and impact force are minimized at a 2°-5° incline, reducing the risk of conditions like plantar fasciitis and stress fractures. Therefore, setting the treadmill incline to 2°-5° not only helps prevent long-term knee damage but also increases caloric burn.

By incorporating these strategies, you can make the most of your treadmill workouts, whether your goal is to lose weight, improve endurance, or maintain overall fitness.