Arms extended.
Using the sketches to the
right I will attempt to demonstrate the proportions of the arms
in various poses when extended. In each of the examples I first
set out the points between the shoulder the elbow and the wrist.
In this first example the
subject has both her arms raised and out stretched to her sides.
She is twisting slightly to her left and is of an athletic
muscular build. Notice the shape of her arms. She has well toned
muscles which emphasise the shape of the
bicep, triceps, extensor and flexor muscles giving the arm
shape and definition.
Note also how her right upper
arm appears slightly longer than her left, as with her
fore arms also. This is because the subject is turning away from
the viewer and there fore her proportions will be slightly
different as her perspective is altered slightly.
In all of these sketch's I
have put marker points to help you understand the proportions of
the arms in relation to their position on the subject. I have
divided each point between the shoulder, elbow and wrist into
equal parts so that it will be easier to understand the
distances between each joint depending on the position of the
arm. In all these sketch's the subject is of an athletic build
so it is important that you show the shape of each muscle of the
arm.
In this sketch the subject is
standing on one leg with her right arm extended to touch
her raised foot. Notice the curve of the bicep and triceps
muscles as they extend from under the shoulder to the elbow
forming a long gentle curve. Her forearm is turned slightly
showing the curve of the extensor muscles as they stretch
over the forearm to meet the wrist. The flexor muscles are also
visible forming a gentle curve under the forearm. It is also
useful to note how the elbow joint is more prominent. This is
because when a subject has less body fat and larger muscle
groups their joints will appear slightly more emphasised.
Note the proportion of the
arms. Her right upper arm appears longer than her left. this is
because she is turning her left arm slightly toward you thus
masking its full length and giving the impression that her left
upper arm is shorter. Also note the length of her forearms.
Again the positioning of her forearms are creating the illusion
that one again is longer than the other. Her right arm is
bending back at the elbow causing the forearm to appear shorter.
In this sketch the subject is
sitting with her hand placed upon her knee. she is leaning back
and turning slightly toward you causing her arm to bend slightly
at the elbow, thus shortening the appearance of the upper arm
and forearm. Her bicep is clearly visible and is more rounded in
appearance as it is being contracted from the elbow. Her fore
arm extensors and flexors are also visible as she has her arm
turned slightly to allow her to place her hand on her knee.