trapezius muscles tend to get over worked by newer runners. what tends to happen is most newer runners slouch forward (subconsciously its your body trying to get the 'workout' over with) and seemingly your body tightens up your trapezius to keep you erect. as to not fall forward. so the consistent strain of up and down on your trapezius leads to a strained muscle. try leaning back with proper or even over extended posture (look at photos of long distance runners) and this should clear it up. if you find that you just cant use this method constant pain creams and ibuprofen will be a daily thing.. trust me, i know.
-ricky
Yes, the trapezius muscle is commonly referred to as the traps.
trapezius
The trapezius muscle in humans is a single, large muscle divided into three specific regions based on their functions: the upper trapezius, middle trapezius, and lower trapezius. Each region of the trapezius muscle contributes to different movements of the shoulder and neck.
The neck muscle or traps
Aerobic and Cardiovascular
Two physical benefits of exercise are improved cardiovascular health and increased muscle strength.
A number of muscles are involved in shrugging your shoulders, including the latissiumus dorsi, the deltoids, the rhomboids, the scapular muscles, the biceps, the triceps, among others. The primary muscle is the upper trapezius muscle. The secondary muscles are the middle trapezius muscles and the levator scapulae.
trapezius muscle
Trapezius
The trapezius is an upper back/neck muscle and the deltoids are shoulder muscles
show some good trapezius exercises for people who are constantly keyboarding
trapezius