• Inspection Method : Testing Carried out on 12 People
  • Torque distribution change verification.

Torque distribution change verification

1

Inspection Method: Testing Carried out on 12 People

Temporary load and lactic acid levels were tested in 12 people on fixed rollers with varying endurance training abilities (LT power ranging between low, medium and high), competition experience (ranging from beginners, people with less than one year's experience, to people with more than three years' experience), and competition level (general, school competition, and national representative level)

Inspection Method

1) Load was increased by 40w at a time and then maintained for 3 minutes. This was repeated until exhaustion.
2) Maintaining a cadence of between 87 and 93 RPM.
3) Measuring each subject's lactate threshold ("LT"), the intensity at which exercise becomes hard.

Warm-up
Maintained for
3 minutes
Increasing power level
by 40w at a time
Ending when power cannot
be increased further
Power HR Cadence

What is lactate threshold ("LT")?

The level of intensity where continued exercise begins to feel hard.

The approximate intensity where changes in blood lactic acid concentration become large is the LT (in this case, baseline +1 mmol/l concentration is defined as the LT.) By measuring this, an athlete's endurance ability can be measured in watts. LT is the most fundamental indicator of endurance potential.

LT between 270W and 290W
Felt as "fairly hard" or "hard"

When the load is low, the power from the oxidative metabolism is central.

As the load increases, this is supplemented by the secondary engine, glycosis. This leads to increased lactic acid production and an increase in lactic acid concentration in the blood.

1mmol/l
LT Power Value

How do you determine the LT Power Value?

Rating of Perceived Exertion ("RPE")

During exercise, the intensity felt by the participant is expressed by a number between 13 and 15. This often corresponds to the LT.
Using RPE, the LT can be easily determined.

  20  
19 Extremely hard
18  
17 Very hard
16  
LT intensities from "fairly hard" to "hard" 15 Hard
14  
13 Fairly hard
  12  
11 Light
10  
9 Very light
8  
7 Extremely light
6  
1

Torque distribution change verification

Measure of left/right pedal change
in torque at 60°, 90°, and 120°

Result 1

Some athletes will, along with load increase, increase their torque rate-of-growth at a constant angle (90°) and will move towards applying more torque in a smaller range.

Athlete A(Left)
90° torque rate-of-growth increases.
60Left 90Left 120Left
LT Power Value
Athlete A(Right)
90° torque rate-of-growth increases.
60Right 90Right 120Right
LT Power Value

Result 2

Some athletes will, along with load increase, increase their torque rate-of-growth at 60° and will move towards applying more torque in a wider range..

Athlete B(Left)
High torque retention in the range of 60°- 90°.
60Left 90Left 120Left
LT Power Value
Athlete B(Right)
High torque retention in the range of 60°- 90°.
60Right 90Right 120Right
LT Power Value

*Display graph is the original analysis data from this study. The Cyclo-Sphere screen is different.
Once again, the level of torque is the verified original data.

Result

  1. Some athletes will, along with load increase, will move towards applying more torque in a smaller range (90°).
  2. Some athletes will, along with load increase, will move towards applying more torque in a wider range (60°- 90°).
  3. According to the athlete, when the most power is exhibited, the change in the distribution of torque varies.