Final answer:
Superset training is a technique that involves doing sets for opposing muscle groups with minimal rest, which is a form of anaerobic exercise leveraging the Length-Tension Range of a sarcomere to balance work and recovery.
Step-by-step explanation:
The training style described in the question is commonly referred to as superset training. This involves performing sets for antagonistic muscle groups back-to-back with little to no rest in between. An example of this would be doing a set of bicep curls followed immediately by a set of tricep extensions. This method is a form of anaerobic exercise, where muscles work against resistance to maximize the engagement of motor units within a muscle for a brief but intense period.
By alternating between opposing muscle groups, you allow one group to rest while the other works, which can contribute to more efficient workouts and potentially reduce overall workout time. This form of exercise fits within the definition of employing 'short periods of vigorous muscular work' as the antagonistic muscles get almost no rest between sets. It also aligns with the 'medium (and varied) muscular work' as one alternates between different muscle groups, employing various tensions and contraction levels.
This training technique leverages the Length-Tension Range of a sarcomere and rapid movement similar to that required in shadow boxing. It is crucial for efficiency and preventing complete muscle fatigue by not recruiting all motor units simultaneously. The idea is to balance the work and recovery throughout the workout session effectively.