The position of the bar, the width of the grip, loads, sets, the number of repetitions, recovery time in-between sets, movement speed, sticking points, the amount of muscular work, rest between workouts, diet and much more have everything to do with training results when lifting weights.

Accumulating knowledge of training principles accelerates growth and helps one target specific anatomical areas that one may want to or need to address. 

An example is that when training on a barbell bench press using a wider grip induces greater adaptations of the shoulders horizontal adductors, the anterior deltoids and the pectoralis major. Training utilizing a narrower grip width induces larger gains in the elbow extensors and shoulder flexors. 

For some this knowledge can help in stimulating growth when their anatomical concerns are identified. Yet, with all the aforementioned training issues that impact development, insight as to which of the prime movers are the limiting factors in performance is much more difficult than what one might expect. 

Obtaining pertinent information about the biomechanics of movement and anatomical consideration of exercise are important contributors to growth, whether a trainer or trainee. But one axiom that will not go away in fitness is the statement of ‘learn-by-doing’ and when doing resistance exercise it is to be done with ‘effort’, that is the hard work of the mind and the body. A training principle that accelerates Getting Strong.