Final answer:
The statement relates to the principle of progressive overload in fitness, where a client should increase the exercise difficulty if they can perform two or more extra repetitions over their goal in consecutive workouts.
Step-by-step explanation:
The statement in question is referring to the concept of progressive overload in strength training and fitness. Progressive overload is a principle that emphasizes the need to continually increase the demand on the musculoskeletal system in order to gain muscle size, strength, or endurance. When a client can perform two or more additional repetitions above their assigned repetition goal in two consecutive workouts, this typically indicates that the muscles have adapted, making it easier for the client to perform the exercise. As a result, it's recommended to increase the weight, intensity, or complexity of the exercise to continue challenging the body and progressing in strength or endurance.
This gradual increase in workload ensures that the fitness level continues to improve by adapting to the stresses placed upon it. For instance, if a client's goal was to perform 10 repetitions and they can comfortably do 12 or more repetitions for the same exercise in two consecutive sessions, it would be appropriate to increase the difficulty to keep promoting muscular adaptations. This can involve increasing the weight lifted, altering the exercise to a more advanced version, or incorporating other factors to maintain a challenging training stimulus.