Garmin D2 Bravo Gebruikershandleiding - Pagina 8

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1. Setting up Garmin Express

Ground contact time: Ground contact time is the amount of

time in each step that you spend on the ground while

running. It is measured in milliseconds.

NOTE: Ground contact time is not available while walking.

Ground contact time balance: Ground contact time balance

displays the left/right balance of your ground contact time

while running. It displays a percentage. For example, 53.2

with an arrow pointing left or right.

Stride length: Stride length is the length of your stride from one

footfall to the next. It is measured in meters.

Vertical ratio: Vertical ratio is the ratio of vertical oscillation to

stride length. It displays a percentage. A lower number

typically indicates better running form.

Training with Running Dynamics

Before you can view running dynamics, you must put on the

HRM-Run accessory and pair it with your device

Sensors, page

22). If your D2 Bravo was packaged with the

accessory, the devices are already paired, and the D2 Bravo is

set to display running dynamics.

Color Gauges and Running Dynamics Data

The running dynamics screens display a color gauge for the primary metric. You can display cadence, vertical oscillation, ground

contact time, ground contact time balance, or vertical ratio as the primary metric. The color gauge shows you how your running

dynamics data compare to those of other runners. The color zones are based on percentiles.

Garmin has researched many runners of all different levels. The data values in the red or orange zones are typical for less

experienced or slower runners. The data values in the green, blue, or purple zones are typical for more experienced or faster

runners. More experienced runners tend to exhibit shorter ground contact times, lower vertical oscillation, lower vertical ratio, and

higher cadence than less experienced runners. However, taller runners typically have slightly slower cadences, longer strides, and

slightly higher vertical oscillation. Vertical ratio is your vertical oscillation divided by stride length. It is not correlated with height.

NOTE: The color gauge for ground contact time balance is different

Go to

www.garmin.com

for more information on running dynamics. For additional theories and interpretations of running dynamics

data, you can search reputable running publications and websites.

Color Zone Percentile in Zone Cadence Range Vertical Oscillation Range Vertical Ratio Ground Contact Time Range

Purple

>95

Blue

70–95

Green

30–69

Orange 5–29

Red

Ground Contact Time Balance Data

Ground contact time balance measures your running symmetry and appears as a percentage of your total ground contact time. For

example, 51.3% with an arrow pointing left indicates the runner is spending more time on the ground when on the left foot. If your

data screen displays both numbers, for example 48–52, 48% is the left foot and 52% is the right foot.

Color Zone

Symmetry

Percent of Other Runners

Ground Contact Time Balance >52.2% L 50.8–52.2% L 50.7% L–50.7% R 50.8–52.2% R >52.2% R

While developing and testing running dynamics, the Garmin team found correlations between injuries and greater imbalances with

certain runners. For many runners, ground contact time balance tends to deviate further from 50–50 when running up or down hills.

Most running coaches agree that a symmetrical running form is good. Elite runners tend to have quick and balanced strides.

You can watch the color gauge or data field during your run or view the summary on your Garmin Connect account after your run.

As with the other running dynamics data, ground contact time balance is a quantitative measurement to help you learn about your

running form.

Tips for Missing Running Dynamics Data

If running dynamics data does not appear, you can try these

tips.

• Make sure you have the HRM-Run accessory.

Accessories with running dynamics have

module.

• Pair the HRM-Run accessory with your D2 Bravo device

again, according to the instructions.

• If the running dynamics data display shows only zeros, make

sure the heart rate monitor is worn right-side up.

(Pairing ANT+

>183 spm

<6.4 cm

174–183 spm

6.4–8.1 cm

164–173 spm

8.2–9.7 cm

153–163 spm

9.8–11.5 cm

<153 spm

>11.5 cm

Red

Orange

Poor

Fair

Good

25%

40%

on the front of the

Select an option:

• If your HRM-Run accessory and D2 Bravo device are

already paired, skip to step 8.

• If your HRM-Run accessory and D2 Bravo device are not

already paired, complete all the steps in this procedure.

Hold UP.

Select Settings > Apps.

Select an activity.

Select Data Screens.

Select a running dynamics data screen.

NOTE: The running dynamics screens are not available for

all activities.

Select Status > Enabled.

Go for a run

Select UP or DOWN to open a running dynamics screen to

view your metrics.

(Ground Contact Time Balance Data, page

<6.1%

6.1–7.4%

7.5–8.6%

8.7–10.1%

>10.1%

Green

Orange

Fair

25%

NOTE: Ground contact time and balance appears only while

running. It is not calculated while walking.

Physiological Measurements

These physiological measurements require wrist-based heart

rate or a compatible heart rate monitor. The measurements are

estimates that can help you track and understand your training

activities and race performances. These estimates are provided

and supported by Firstbeat.

(Going for a Run, page

7).

<218 ms

218–248 ms

249–277 ms

278–308 ms

>308 ms

Red

Poor

4).

Heart Rate Features