Your question is one which let's me address a little broader discussion of conditioning principles which should help other coaches as well. Conditioning programs have for the better part of the last half century been compartmentalized around the sport season in which an athlete participates. In recent years there has been a much greater emphasis on developing athleticism as the primary goal of both individual and team workout programs. The human body while not a machine is a rather complex system. It will however adapt and change when challenged.
Conditioning is a continuous process that can insure development when done in a progressive way.
In very simplified terms your body has three energy systems it uses for basketball. The first is called ATP energy which, is stored within and used directly by the muscles. These energy stores have an approximately 10 second duration, and are used by the muscles when under maximal load, during quick explosive movements. Most hustle plays involve this energy system. The second energy system is through anaerobic glycolysis, or sometimes called the lactic acid system.