I have always heard that the back needs to be trained both with horizontal pulling and vertical pulling for total development. Recently, after re reading the article on Doggcrapp training, I have become even more interested in the subject of the anatomy of the back. I know both movements train the lats, but in the article it mentions training back width, and back thickness and associates width with vertical pulling and thickness with horizontal pulling.
If muscles only shorten/contract in one way, wouldnt both horizontal and vertical pulling both train thickness and width? If they both work the lats, wouldnt one make the other stronger (stated another way, "I am not overweight in the least, I am beast at rows, therefore I am beast at pullups...")? And the most confusing of all to me...How does a deadlift contribute to the development of a thick back as a horizontal pulling motion when the arms stay completely straight (I understand its a pulling/lower back exercise, but wouldnt that mean that it only trains the lumbar spine muscle attachments)?
Bonus question...I am over half way through Rippetoe's Starting Strength program. I, when I am done with the reading am going to take about a week to practice the form of the lifts. I will be using the template he provided in one of his most recent articles on T-Nation titled "Who wants to be a novice? You do." People always say that these programs neglect parts of the body. Would this program neglect arms/traps/back thickness? Is there any compound movements that could be added? Worse comes to worse, I'll do SS and then work on the neglected stuff later.