Upper arm

Muscles

• Biceps brachii

  The two-headed muscle on the front of the upper arm. How it bends the elbow and turns the palm up, how it tires and tears, how it grows with training, and what it works with.

• Brachialis

  The thick muscle under the biceps that bends the elbow. Where it attaches, why forearm turning barely changes its job, how it tears or forms bone, how it grows with training, and what it works with.

• Triceps brachii

  The three-headed muscle on the back of the upper arm that straightens the elbow. How its heads are built and supplied, how it tears, how it grows with training, and what it works with.

Bones

• Humerus

  The upper arm bone, from the shoulder to the elbow. How it is shaped, how it breaks, how it heals and thickens with throwing and racquet sports, and what attaches to it.

Exercises

• Biceps curl

  An exercise that bends the elbow against a weight. What the studies measured it loading, where they disagree about grip, and how the arm muscles changed with training.

• Triceps extension

  An exercise that straightens the elbow against a weight. What the studies measured it loading, how arm position and range change the work, and where training studies disagree.

Conditions

• Humeral shaft fracture

  A break in the long middle part of the upper arm bone. How reviews define it, who it affects, and what trials of surgery against a brace found.

Exercises that load this area

Filed under another area, but connected to an entry here.

• Bench press

  A barbell pressing exercise. What studies measured it working, from the chest and triceps to the shoulder, how bench angle and grip width change that, what ten weeks of training changed, and how studies progressed it.

• Burpee

  A bodyweight move from standing to a squat, a plank and back up, often with a push-up and a jump. What studies measured of its demand, what burpee training trials found, and how thin the evidence on its muscles is.

• Dead hang

  Hanging from the hands with the arms straight. What studies of climbers measured it loading, from the finger muscles to the back, how grip endurance changed with training, and what one bar-hang study showed about the spine.

• Dip

  Lowering and raising the body on the arms, from a bench, bars or rings. What two small laboratory studies in men measured, the injuries case reports describe, and what one training trial found.

• Mountain climber

  A bodyweight exercise used in interval circuits and some fitness tests. The muscle measurements nearest to it come from related knee-drive moves, and the training trials tested circuits that included it. What those studies did and found.

• Overhead press

  A pressing exercise that pushes a weight from the shoulders to overhead. What the studies measured it loading, how seat, bar and bar path shift the work, and what is and isn't known about training it.

• Pull-up

  Pulling the body up to a bar from a hang. What studies measured it loading, how grip and kipping shift the work, what changed with training, and what injury reports recorded.

• Push-up

  A bodyweight pressing exercise done face down on the hands. How much body weight studies measured on the hands, which muscles work, how hand position and unstable surfaces change that, and what training trials found.