Tyler Robbins Fitness

Tyler Robbins has his B.Sc. in Biochemistry: Pre-Medical, is a Certified Strength and Conditioning Specialist (CSCS) through the National Strength and Conditioning Association (NSCA), is certified through USA Weightlifting, and a CrossFit Level 2 Trainer.

Learn all about your latissimus dorsi

Source: http://en.wikipedia.org/wiki/Latissimus_dorsi_muscle

Source: http://en.wikipedia.org/wiki/Latissimus_dorsi_muscle

Your latissimus dorsi, also known as your "lats," is a large fan-shaped muscle covering much of your back. The name latissimus dorsi is actually latin, meaning "broadest muscle of the back."

The lats attach in a number of places, although there is quite a large variation in the total number of attachment points from individual to individual:

  • Spinous processes ("jagged" point of your spine) from the 7th thoracic vertebrae all the way down to your 5th lumbar vertebrae (4 to 8 total vertebrae, based on the individual)
  • Iliac crest of your sacrum (based on the individual)
  • Inferior angle of your scapula
  • Lower 3 or 4 ribs (based on individual)

Despite the large variation in attachment points, all lats insert to the back side (distal portion) of the humerus, just beneath the head of the humerus.

Function

  • Torso/spine extension
  • Torso/spine lateral flexion
  • Arm/Shoulder extension
  • Adduction
  • Transverse extension/Horizontal abduction
  • Flexion from an extended position
  •  Internal rotation of the shoulder/humerus
Torso/Spine Extension

Torso/Spine Extension

Torso/Spine Lateral Flexion

Torso/Spine Lateral Flexion

Arm/Shoulder Extension

Arm/Shoulder Extension

Adduction (arm towards body)

Adduction (arm towards body)

Transverse Extension/Horizontal Abduction

Transverse Extension/Horizontal Abduction

Flexion from an extended position

Flexion from an extended position

Internal Rotation of the Shoulder/Humerus

Internal Rotation of the Shoulder/Humerus

My Favourite Latissimus Dorsi Exercises

Barbell Row
Deadlift
Standard Pull-ups
Chin-ups

You can see more of my favourite lat/back exercises in my free 30 minute Legs & Back routine and my free 30 minute Back & Biceps routine.