The anatomy of a cyclist - which muscles are used to ride

Discussion in 'Cycling Training' started by mikesbytes, Mar 30, 2007.

  1. mikesbytes

    mikesbytes New Member

    Joined:
    Apr 12, 2006
    Messages:
    1,717
    Likes Received:
    2
    What are the primary muscles used when cycling, in partiular road racing and what are the supporting muscles?

    Definition of usage;
    Primary: The primary muscle used in the movement
    Supporting;
    - Synergist: A muscle that assists another muscle to accomplish a movement.
    - Stabilizer: A muscle that contracts with no significant movement.
    - Dynamic Stabilizer: A biarticulate muscle (A muscle that crosses two joints) that simultaneously shortens at the target joint and lengthens at the adjacent joint with no appreciable difference in length. Dynamic stabilization occurs during many compound movements.
    - Antagonist Stabilizer: A muscle that contracts to maintain the tension potential of a biarticulate muscle at the adjacent joint. The antagonist stabilizer may be contracted throughout or at only one extreme of the movement.

    Diagrams of muscles in the legs
    Gluteus Maximus
    Hip Abductors - Gluteus Medius and Target: Gluteus Minimu and Target: Tensor Fasciae Latae
    Quadriceps
    Hamstrings
    Gastrocnemius
    Soleus
    Tibialis Anterior

    Diagrams of muscles in the back
    General Back
    Erector Spina (also in the waist)
    Latissimus Dorsi and Teres Major and Trapezius Lower Fibres and Rhomboids
    Trapezius Upper Fibres and Trapezius Middle Fibres and Levator Scapulae
    Infraspinatus and Teres Minor
    Subscapulari
    Supraspinatus

    Diagrams of muscles in the waist
    Rectus Abdominis
    Obliques
    Transverse Abdominus (don't have a picture)
    ErectorSpinae (also in the back)

    Diagrams of muscles in the Back
    General Back
    Erector Spina
    Latissimus Dorsi and Teres Major and Trapezius Lower Fibres and Rhomboids and Rhomboids
    Trapezius Upper Fibres and Trapezius Middle Fibres and Levator Scapulae
    Infraspinatus and Teres Minor
    Subscapulari
    Supraspinatus

    Diagrams of muscles in the Shoulders
    Deltoid Anterior
    Deltoid Lateral
    Deltoid Posterior
    Supraspinatus

    Diagrams of muscles in the Triceps
    Triceps Brachii

    Diagrams of muscles in the Biceps
    Biceps Brachii
    Brachialis
     
    Tags:


  2. MaddSkillz

    MaddSkillz New Member

    Joined:
    Mar 26, 2007
    Messages:
    4
    Likes Received:
    0
    So which ones are the primary? Okay so we know what muscles are what but nothing here explains which muscles are primary, secondary etc... in a bicycle ride.
     
  3. mikesbytes

    mikesbytes New Member

    Joined:
    Apr 12, 2006
    Messages:
    1,717
    Likes Received:
    2
    This is exactly my question, I don't know exactly which muscles are used. Quadriceps would be one of the primary muscle groups. I'm hoping that there's someone out there who knows something on this topic.
     
  4. sogood

    sogood New Member

    Joined:
    Aug 24, 2006
    Messages:
    2,148
    Likes Received:
    0
    I have a diagram on the dynamic application of the various muscle groups. But there's no image upload facilities. See if the following works...
    [​IMG]
     
  5. mikesbytes

    mikesbytes New Member

    Joined:
    Apr 12, 2006
    Messages:
    1,717
    Likes Received:
    2
  6. mikesbytes

    mikesbytes New Member

    Joined:
    Apr 12, 2006
    Messages:
    1,717
    Likes Received:
    2
  7. discobean7

    discobean7 New Member

    Joined:
    Nov 13, 2003
    Messages:
    206
    Likes Received:
    0
    That diagram is nice. Your hip flexors are off though. The green color indicates Iliopsoas (iliacus, psoas major, psoas minor), Sartorius, and Tensor fascia latae (more of a stabilizer). Also Quadriceps femoris is a 2-joint muscle so can act as a hip flexor as well.
     
  8. mikesbytes

    mikesbytes New Member

    Joined:
    Apr 12, 2006
    Messages:
    1,717
    Likes Received:
    2
    Thanks Disco, much appreciated.

    How does this look ?

    Power Phase
    A - Hip Extensor => Gluteus Maximus
    B - Knee Extensor => Quadriceps
    C - Ankle Plantar Flexors => Gastrocnemius and Soleus


    Recovery Phase
    D - Ankle Plantar Flexors => Tibialis Anterior
    E - Knee Flexor => Hamstrings
    F - Hip Flexors => Iliopsoas (iliacus, psoas major, psoas minor) and Sartorius and Tensor Fasciae Latae (more of a stabilizer) and Quadriceps Rectus Femoris is a 2-joint muscle so can act as a hip flexor as well

    You wouldn't happen to know which usage category the muscles fall into;

    Definition of usage;
    Primary: The primary muscle used in the movement
    Supporting;
    Synergist: A muscle that assists another muscle to accomplish a movement.
    Stabilizer: A muscle that contracts with no significant movement.
    Dynamic Stabilizer: A biarticulate muscle (A muscle that crosses two joints) that simultaneously shortens at the target joint and lengthens at the adjacent joint with no appreciable difference in length. Dynamic stabilization occurs during many compound movements.
    Antagonist Stabilizer: A muscle that contracts to maintain the tension potential of a biarticulate muscle at the adjacent joint. The antagonist stabilizer may be contracted throughout or at only one extreme of the movement.
     
  9. discobean7

    discobean7 New Member

    Joined:
    Nov 13, 2003
    Messages:
    206
    Likes Received:
    0
    The original circular diagram depicts the agonists at different points of the pedal stroke. In general the two-joint muscles like hamstrings (biceps femoris, semimembranosus, and semitendinosus), rectus femoris, and gastrocnemius are most important. For the purpose coordinated movement the antagonist muscle will have some activity especially at higher cadences. As you will soon see there are many variables and no single correct answer due to differences in power output, cadence, level surface or incline, seated or standing climbing. Here are a couple of links with good info and diagrams.
    http://jap.physiology.org/cgi/content/full/85/3/927#B14
    http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=3468609&dopt=Abstract
     
  10. mikesbytes

    mikesbytes New Member

    Joined:
    Apr 12, 2006
    Messages:
    1,717
    Likes Received:
    2
    Those papers pretty much went over my head, what I did get from them was a percentage, however Ankle Dorisiflexor (Tibialis Anterior) is missing

    Power Phase
    A - Hip Extensor (27%) => Gluteus Maximus
    B - Knee Extensor (39%) => Quadriceps
    C - Ankle Plantar Flexors (20%) => Gastrocnemius and Soleus


    Recovery Phase
    D - Ankle Dorsiflexors (?%) => Tibialis Anterior
    E - Knee Flexor (10%) => Hamstrings
    F - Hip Flexors (4%) => Iliopsoas (iliacus, psoas major, psoas minor) and Sartorius and Tensor Fasciae Latae (more of a stabilizer) and Quadriceps Rectus Femoris is a 2-joint muscle so can act as a hip flexor as well
     
  11. benkoostra

    benkoostra New Member

    Joined:
    Mar 7, 2006
    Messages:
    392
    Likes Received:
    0
    I love the diagram. Thanks.


    But that guy need to get that bunion removed.:D
     
  12. sogood

    sogood New Member

    Joined:
    Aug 24, 2006
    Messages:
    2,148
    Likes Received:
    0
    That's not a bunion. It's actually her natural cleat! :p
     
  13. mikesbytes

    mikesbytes New Member

    Joined:
    Apr 12, 2006
    Messages:
    1,717
    Likes Received:
    2
    Anyone know the fix for the percentages so Ankle Dorsiflexors can be included on the rating?
     
  14. JungleBiker

    JungleBiker New Member

    Joined:
    May 17, 2004
    Messages:
    119
    Likes Received:
    0
    Hi Mike,

    Just curious to know why you want to know all this?

    JB
     
  15. ccrnnr9

    ccrnnr9 New Member

    Joined:
    May 5, 2004
    Messages:
    152
    Likes Received:
    0
    You have some of the things wrong. The tibialis anterior with dorsiflex not plantarflex. The soleus also helps to flex the knee. The tensor fascia lattae does not really do much flexion. Also, it would probably be better to specify which muscles cause flexion, not just use general terms like "quads". I think you would enjoy "Road Cycling" by the Handbook of Sports Medicine and Science. It has a lot of good resources although it is more in depth than the sources you linked to so if that was more info than you wanted, this may not be anything you are interested in. The diagram that was posted also is a very good resource.
    ~Nick
     
  16. mikesbytes

    mikesbytes New Member

    Joined:
    Apr 12, 2006
    Messages:
    1,717
    Likes Received:
    2
    Hi JB, cycling is impacting my weight lifting, I don't seem to be finding a suitable day of the week to do squats, which I need to work on, as I intend to enter the Sydney powerlifting competition next January. So I'm attacking this problem from several angles, including understanding what the exact overlap is. In the end I'm hoping to get the cycling and the weight lifting to work together.

    Mind you, the weight lifting doesn't seem to be affecting my cycling, as I got my first race win today - yippie !!!
     
  17. mikesbytes

    mikesbytes New Member

    Joined:
    Apr 12, 2006
    Messages:
    1,717
    Likes Received:
    2
    Hi Nick, thanks for the info. I'll make the corrections and repost
     
  18. qsk8com

    qsk8com New Member

    Joined:
    Jan 21, 2011
    Messages:
    4
    Likes Received:
    0
    amen in jesus to you.
    nice pedal stroke chart.
    have you updated it?
     
  19. swampy1970

    swampy1970 Well-Known Member

    Joined:
    Feb 3, 2008
    Messages:
    10,057
    Likes Received:
    185
    The image works but the info on it is ass backwards...
     
  20. davereo

    davereo Well-Known Member

    Joined:
    Jun 17, 2010
    Messages:
    1,639
    Likes Received:
    70
    The image works but the info on it is ass backwards...




    The ass in the image is in the right location. The rest is just to much info.
     
Loading...
Loading...