What are the most effective ways to structure an indoor training plan to specifically target outdoor riding performance, taking into account factors such as course terrain, weather conditions, and the physical demands of outdoor cycling, and how can riders balance high-intensity interval training, endurance rides, and strength and conditioning exercises to achieve optimal results, while also minimizing the risk of overtraining and injury?
In particular, what are the key differences in training focus and intensity that should be considered when preparing for hilly or mountainous terrain versus flat or rolling courses, and how can riders use indoor training tools such as virtual reality and smart trainers to most effectively simulate these different types of courses and conditions?
Additionally, what role should strength and conditioning exercises play in an indoor training plan, and which specific exercises are most beneficial for improving pedaling efficiency, core strength, and overall cycling performance, and how can riders incorporate these exercises into their indoor training routine without interfering with their cardiovascular training and risking overtraining or injury?