you have now learned the importance and benefits of weight training and cardiovascular activity. decide which athlete might use the least amount of weight training in his/her preparation?

As an AI language model, I cannot make assumptions about athletes' training regimens or make specific recommendations. However, theoretically, an athlete who competes in an endurance-based sport such as long-distance running or cycling may not prioritize weight training as heavily as a power-based athlete such as a weightlifter or sprinter. This is because endurance athletes may focus more on cardiovascular training to improve their endurance and stamina while maintaining lean body mass, whereas power-based athletes may need to prioritize building strength and muscle mass through weight training.

In general, different athletes require different types and amounts of training based on their sport, performance goals, and individual strengths and weaknesses. However, if we consider a wide range of sports, an athlete who might use the least amount of weight training in preparation could be a long-distance runner. Here's why:

1. Sport-specific focus: Long-distance running mainly requires cardiovascular endurance and building aerobic capacity. To excel in this sport, athletes primarily need to focus on endurance training, including running at various distances, paces, and terrains.

2. Muscle efficiency: Long-distance runners aim to develop efficient muscles that can sustain prolonged effort without excessive fatigue. They generally prioritize lean body mass and a high power-to-weight ratio, which can be achieved through running-specific training, such as interval training and tempo runs, rather than heavy weightlifting.

3. Risk of muscle bulk: Heavy weight training can lead to increased muscle mass, which may negatively impact a long-distance runner's performance. Extra muscle bulk can be counterproductive as it requires more energy and oxygen, potentially impairing endurance.

4. Injury prevention: Runners often prioritize injury prevention, and excessive weight training can increase the risk of musculoskeletal injuries. While some strength training is beneficial for overall body conditioning, it is typically focused on specific muscle groups and joint stability rather than heavy lifting.

It's important to note that this answer may vary for individual long-distance runners and different training programs. Consulting with a coach or sports-specific expert would provide more personalized guidance based on individual needs and goals.