I certainly saw better recovery and tissue gains when I started doing low weight high rep sets at the end of my workout. Up to 15 reps for isolation exercises.
There is some science that says these types of workouts are better for protein synthesis as well,
PLoS ONE: Low-Load High Volume Resistance Exercise Stimulates Muscle Protein Synthesis More Than High-Load Low Volume Resistance Exercise in Young Men
But doing ONE or the OTHER is silly. It's like focusing only on the flat bench when you have so many exercise options.
There is some science that says these types of workouts are better for protein synthesis as well,
PLoS ONE: Low-Load High Volume Resistance Exercise Stimulates Muscle Protein Synthesis More Than High-Load Low Volume Resistance Exercise in Young Men
But doing ONE or the OTHER is silly. It's like focusing only on the flat bench when you have so many exercise options.