How to decode the ERG screen – CFS

Dec 20th, 2016

Category: CrossFit

How to decode the ERG screen – CFS

Little John - Focused & Determined

Little John – Focused & Determined

Holiday Schedule
We will be running one box only all week for All Levels classes.  GritWod will be with class all week.  Come on in and get your fitness on!
Saturday 12/24 – All Levels classes @ 8,9,10,11,  no intro or mobility class.  Box closes at 12pm.
Sunday 12/25 – Merry XMass – no classes
Monday 12/26 – All levels classes in Southie Green @ 11am, 12pm, 3pm Open Gym  1-3
Tuesday 12/27 through Friday 12/30 One box only – All Levels Classes in Southie Green only @ 5:30am, 6:30am, 9am, 11am, 12pm, 4pm, 5pm, 6pm, 7pm
Saturday 12/31 – No classes in orange.  Normal schedule in Green.  All levels classes in Green @  8,9,10,11, 2pm, noon mobility, noon intro.
Sunday 1/1 – All levels classes in Southie Green at 11am and noon – New Years Day WOD!
Monday 1/2 – Normal Schedule

erg_screen

How to decode the ERG screen

Your time elapsed is the first number shown here and dictates how long you have been rowing for.  In this case the athlete has been on the rower for 5:30.

The split is the number in front of the /500m.  Your split changes with every pull of the chain and is essentially your pace.  Here you can see it see it is at 1:45.  This means if you were to keep up your current pace you would finish 500m in 1:45.  For longer distances you can do the math yourself.  For 1000m this pace would take you 3:30, 2k would be 7:00 and so on and so forth.  On a longer row your split should be higher to allow you to maintain your pace.  On a shorter row, you can push the pace a little bit resulting in a lower average split time over the course of the distance rowed.

The current distance traveled can be found on the screen in meters.  It essentially lets you know how far you have gone during your piece.  Here the athlete has traveled 1008m.

The s/m (strokes per minute) is often overlooked but can be very important and will vary depending on the length of your row/workout.  It can be found here in the upper right corner of the screen as 55.  If you have ever witnessed someone rowing on the water you will notice that they perform long even strokes that take about one second on the way out, they then take their time to recover, about 2 seconds on the return, to ensure that the get the hardest most efficient pull possible.  This typically translates to a s/m of 25-30 and puts a high demand on the legs.  Maintaining this s/m will be of the utmost importance to maintain form, efficiency and to prevent the athlete from gassing out prematurely in longer rows/workouts.  In sprint workouts, less than 500m, you may find that you can complete the task before the anaerobic/aerobic pain sets in.  As a result, during these sprints the s/m may venture higher than the 30 standard.  The higher you go on the strokes per minute, the less efficient your pull becomes, the less you use your legs and the more likely you are to lose your breath before your legs get tired.

The force curve (not shown above) changes with each stroke and displays two important concepts:
1. When you are providing power to the chain during your stroke.
2. How much total power you are providing over the course of the stroke.

The force curve ideally is a left-leaning parabola without any abrupt spikes. It displays an early drive from the hips and hamstrings with distributed power throughout the stroke. If your curve looks like a tee-pee or a graph of ups and downs in the stock market, your pull is not consistent and could use some work to improve efficiency. Remember, efficiency is key (especially in longer rows) it means less work. Make sure you are getting tight, driving with your legs and pulling evenly throughout instead of just yanking on the chain.

Secondly, the total area under the curve is going to demonstrate the power you applied over the course of a stroke, which is going to determine the distance traveled and calories of work. A long, high-arching parabola, with lots of area underneath it, is ideal and will mean more distance and more calories. A low-lying curve would mean less power and not as much distance traveled.

Use these tools to work on the efficiency of your pull. In the next segment, we will discuss using power 5’s and power 10’s to get through the agony of longer lower intervals and set some new PRs!

Strength
Back Squat
2-2-2-2-2
– full 2 second pause at the bottom

Partner WOD
Row a 5k for Time
While one partner is rowing the other partner will accumulate as many Sit-ups as possible

Score= 5k Time & Sit-ups

DISCUSSION 7 Comments

  1. Joel Carpenter 12/21/2016 at 6:16 pm

    Pause Squat: 205 x2
    WOD: 22:06 and 433 with Dave

  2. Ryan Gould 12/21/2016 at 3:25 am

    BS: 235×2 (pause squats)

    WOD: 22:58 w/ Thomas (585 sit ups)
    Victorious on the battlefield tonight

  3. barrow 12/21/2016 at 1:57 am

    Pause Squats: 205×2
    WOD: 23:29 and 531 w/ Stace ‘In Ya Face’ Trojanowski
    7PM Scoring: 140
    (With a ‘Thomas Coefficient of -17. You don’t even want to know, just know it was good enough to beat Trev/Dan by 2 reps.)

  4. Trevor Crean 12/21/2016 at 1:16 am

    Sq- 205
    WOD: 20:21 and 538 w/ Dan

  5. Jaime Owens 12/21/2016 at 12:58 am

    Worked up to 275#
    Partnered WOD with Igor: 20:46 / 346 sit-ups RX

  6. Kippy 12/20/2016 at 5:26 pm

    Strength: 198×2

    Partner WOD w/ Morgan: 5K row 21:18, 580 sit-ups

  7. JT 12/20/2016 at 3:47 pm

    Strength: worked up to 275# x2
    Partner WOD w/Brian: 5K row 21:11 481 sit ups