Using the Precor Heart Rate Option

The Precor Heart Rate Interactive System has many unique features. When you use the Precor Heart Rate Option and have the optional heart rate receiver installed in the display console, your heart rate can appear on the display. The Smart RateTM and Heart Rate displays simplify the correlation between heart rate and exercise. You don’t have to stop concentrating on your workout to find your pulse anymore. It is displayed right in front of you. When you use the Heart Rate Control Course, the EFX software monitors and maintains your heart rate in the target zone best suited for your specific needs.

When you maintain your heart rate between 70% and 85% of your maximum aerobic heart

rate, you are improving your overall cardiovascular/cardiorespiratory fitness level. If you maintain your heart rate between 55% and 70% of your maximum aerobic heart rate, you are burning enough calories that, when continued on a regular basis for 30 minutes or more, provides the greatest fat-burning (weight loss) benefits. Before you use the chest strap transmitter, please study this section thoroughly. Included in this section are the following:

•	wearing the chest strap transmitter	•	using the Heart Rate Control Course (HRC)
•	utilizing the heart rate interactive system	•	correcting inconsistent heart rate readings

Important: If you do not use the Precor Heart Rate Option and the optional heart rate receiver according to the guidelines found in this manual, you could jeopardize the accuracy of your heart rate readings or void the Precor limited warranty.

Wearing the Chest Strap Transmitter

The Precor Heart Rate Option is a completely wireless system. A built-in receiver displays continual feedback about your heart rate when you wear the transmitter strap around your chest. No bulky wires or cables interfere with your movements.

The wireless chest strap contains the electrodes that transmit your heart rate (pulse) to the receiver. To get an accurate reading, the electrodes need to be moist and in direct contact with your skin. Be sure to wear the chest strap underneath your clothing.

Take the following steps to put on the chest strap:

Diagram 9

Determine proper length

Diagram 10

Moisten electrodes. If needed, use the spray included with the Precor Heart Rate Option.

Diagram 11

Buckle chest strap

6in.

(15 cm)

With the proper adjustment of the chest strap, you are ready to begin using the Precor Heart Rate Option.

1.Determine the length of the strap by wrapping it around your chest. Without stretching the strap, check the distance between the two ends of the strap. For a snug fit, the ends of the strap should be about 6 inches (15 cm) apart. See Diagram 9. Adjust the tightness of the chest strap by sliding the buckle along the strap.

2.Remove the strap from around your chest and carefully dampen the electrode strips with the electrolyte spray or tap water as shown in Diagram 10. Do not use deionized water. To function properly, the electrodes need the salts and minerals found in non-purified water. Once you begin your workout, your perspiration keeps the electrodes moist.

3.Buckle the strap around your chest. The strap should feel snug, not restrictive. Make sure that the transmitter lies horizontally across your chest and is centered in the middle of your chest. See Diagram 11.

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EFX 5.21si specifications

The Precor EFX 5.21si is an elliptical fitness machine that provides a unique and effective workout experience for users at all fitness levels. Designed with versatility and user comfort in mind, the EFX 5.21si combines advanced technology with an intuitive design to help users achieve their fitness goals efficiently.

One of the standout features of the EFX 5.21si is its CrossRamp technology. This innovative feature allows users to adjust the ramp angle of the machine, enabling them to target different muscle groups across the lower body. With a range of ramp settings available, users can easily customize their workouts to focus on their preferences, whether that be quads, hamstrings, glutes, or calves. This versatility adds variety to workouts, helping to keep users engaged and motivated.

The EFX 5.21si also boasts a low-impact cardio workout that mimics natural walking or running, making it an excellent choice for those seeking to avoid joint strain. The smooth motion provided by the machine helps prevent injuries while still offering an effective calorie-burning workout. This design is particularly beneficial for users who may be recovering from injuries or are just beginning their fitness journey.

In terms of user interface, the EFX 5.21si features an easy-to-read console that displays essential workout metrics, including time, distance, calories burned, and heart rate. The heart rate monitoring system is integrated into the handlebars, allowing users to maintain their desired intensity levels efficiently. With various preset workout programs available, users can choose routines based on their specific fitness goals, whether it’s weight loss, endurance training, or interval workouts.

Durability and stability are crucial characteristics of the Precor EFX 5.21si. Constructed with commercial-grade materials, this elliptical is designed to withstand regular use, making it suitable for both home gyms and commercial fitness facilities. The solid build ensures that users experience a stable platform, enhancing safety and performance during workouts.

Overall, the Precor EFX 5.21si is an exceptional choice for anyone looking to elevate their fitness routine. With its adjustable ramp, low-impact cardio benefits, user-friendly console, and durable construction, the EFX 5.21si stands out as a top contender in the elliptical trainer market. It offers a comprehensive workout experience that caters to diverse fitness levels, making it a valuable addition to any exercise regimen.

Precor EFX 5.21si Using the Precor Heart Rate Option, Wearing the Chest Strap Transmitter

Models: EFX 5.21si