What training method is best suited for an 18-year-old trying to improve strength with a trainer?

The best training method for an 18-year-old aiming to improve strength with a trainer involves progressively increasing the weight for muscle overload. This approach aligns with the principles of strength training, where the concept of progressive overload is fundamental. By gradually increasing the weights lifted, the muscles are challenged beyond their current capacity, stimulating growth and strength development through adaptation.

This method encourages continuous improvement and helps to prevent plateaus in strength gains, while also allowing for proper recovery. The principle of progressive overload is vital because it ensures that the muscles are consistently adapting to greater demands, which is essential for building strength.

In contrast, reducing the amount of weight gradually would not provide the necessary challenge for muscle adaptation and could lead to a decline in strength. Maintaining a fixed weight for all exercises lacks the variability needed for growth and may result in stagnation. Focusing solely on endurance training does not address strength development, as endurance typically emphasizes duration over the intensity needed for muscle strengthening. Thus, progressively increasing the weight is the most effective method for achieving strength improvements in a structured training program.