L | Add Line | |
A | Add Angle | |
C | Add Circle | |
R | Add Rectangle | |
D | Draw | |
T | Aa | Add Text |
M | Add Magnifier | |
G | Add Grid | |
, | Previous Annotation | |
. | Next Annotation | |
del | delete | Delete Selected Shape |
Angle | Definition | Tri | Road | TT | Comments |
---|---|---|---|---|---|
Knee Angle Extension | The angle or bend in the knee at the bottom of the pedal stroke or the point of most extensions. | 137°-143° | 137°-145° | 137°-143° | Compare with Maximum Foot Angle. |
Knee Angle Flexion | The angle or bend in the knee at the top of the pedal stroke – the most closed or acute angle throughout the pedal stroke. | 66° or greater | 65° or greater | 65° or greater | If over the limit, shorter cranks are indicated. |
Fore/Aft Position | Center of bottom bracket to center of hip joint. Prefere to measure this with the crank arm parallel to the ground pointing forward. | 78°-86° | - | - | TT is restricted by UCI regs. |
Closed Hip Angle | The angle of the hip from the center of the knee, to center of the hip joint, to shoulder. | 45°-55° | 55°-65° | 40°-50° | Prefer to not drop below 48° if possible as any more acute than that can affect the run after. Most people end up 48°-52°. |
Back Angle | Horizontal back angle from center of hip joint. | 20°-25° | 40°-55° | 18° or less | Most fit schools provide a range up to 30° of back angle for Tri; however, I find very few people cannot achieve at least 25°. |
Reach to Aerobar | Angle of Hip-shoulder-elbow. | 78°-88° | n/a | UCI Restricted | |
Reach to Hoods | Shoulder angle to wrist. | - | 80°-90° | - | Highly dependent on the bend on elbow, which should be 135°-150° but difficult to assess on trainer. Shoulder position also comes into play here. |