FRI 10.11.13 Messing with Fran

Messing with Fran : An argument for scaling

By Coach Raul
Crossfit was designed to apply ‚Äúconstantly varied, high intensity, functional movements,” across multiple domains. Its purpose is to develop general fitness, and one way of doing that is through short, high-intensity workouts. One way to ensure high intensity is to scale certain loads to a more manageable weight, allowing you to do more work in less time. I decided to test this theory by scaling Fran (today’s workout: 21-15-9 rep rounds of thrusters and pull ups) from the Rx (written, or prescribed) weight of 95-pound thrusters, down to a 65 pounds.
Here’s what I looked at:
Pullup distance (from bottom to chin over bar): 20in
Body weight (Force): 150 lbs
Squat distance (from bottom of squat to upright): 23 in
Barbell distance (from bottom of squat to full extension): 40 in
# of Total Reps = 45
Work = Force X Distance (ft.lbs)
POWER = [(# of Reps) X (Sum of the Work)] / time (sec)

Movement

Force

Distance

Work

Pullup 150lbs 20 in 250 ft. lbs
Thruster 150lbs 23 in 287 ft. lbs
Thruster 95 lbs 40 in 316 ft. lbs
Time: 304 sec POWER 126 ft.lbs/sec
Pullup 150lbs 20 in 250 ft. lbs
Thruster 150lbs 23 in 287 ft. lbs
Thruster 65lbs 40 in 216 ft. lbs
Time: 210 sec POWER 161 ft.lbs/sec

The results described in the chart define a comparison of power output for a 95-pound Fran at my old completion time of 5:04min (304 sec) and a 65lb Fran completed in 3:30min (210 sec). The results prove a reduction of the thruster load by almost 30% resulted in an increased power output (Higher intensity!).
My personal experience with completing Fran in 3 minutes and 30 seconds was one word : INTENSE!!!
The same workout I’d done several times completely changed once I moved into a shorter time domain. Had I not scaled down the weight, I wouldn’t be able to reach this intensity level or reap its benefits.
Today when you do Fran, consider scaling the thrusters and/or pull ups to complete it in a shorter time. It may totally change your workout!
photo 2Justin R rockin’ push ups

Today’s schedule

6a: All Levels CrossFit- Beka
7a: All Levels CrossFit- Beka
8a: All Levels CrossFit- Beka
12n: All Levels CrossFit- Beka
4p: All Levels CrossFit- Amy
5p: All Levels CrossFit- Amy
6p: All Levels CrossFit- Amy

Workout of the Day (WOD):

A. Single-leg step ups (to a knee-high box): 4 sets of 8 work-ups
B. “Fran”:
21-15-9 reps for time:
Thrusters 95/65
Pull ups

And coming tomorrow…TEAM WOD SATURDAY

In teams of 2-4 people, complete 3 rounds for time:
Run 400m (all team members together)
50 bear complex 95/65
60 toes to bar
Farmers carry – down and back in parking lot (each person) 2 pood/1.5 pood

Leave a Reply