Low-volume training is a style of resistance training that integrates fewer sets and repetitions with heavier resistance than traditional muscle-building workouts. Most people follow a high-volume training regimen because they believe it's the most effective way to stimulate muscle growth. However, low-volume training may pack similar benefits.
The key to a low-volume program isn't just about cutting the number of reps. It's also about increasing how much effort goes into those reps. Someone training at a low volume may do a short number of reps with a higher weight than someone doing many more reps with a lower weight. That person will also do every rep with a maximum effort. One benefit of a low volume workout is someone sticking to such a program will get the results he wants but spend less time in the gym.