What are the most effective strategies for integrating indoor training sessions with outdoor event preparation, specifically in terms of periodization, intensity, and volume, to ensure a seamless transition from structured workouts to competition, and how can riders balance the need for high-intensity interval training indoors with the demands of longer, more endurance-focused outdoor events, while also allowing for adequate recovery time and avoiding burnout or overtraining, and are there any specific metrics or data points that riders should focus on when tracking their indoor and outdoor training to ensure a well-rounded and effective training program, and how can riders use indoor training to target specific weaknesses or areas for improvement identified during outdoor events, such as hill sprints or time trials, and what role should indoor training play in the overall training program, particularly during the off-season or base-building phases, and are there any differences in how indoor training should be approached for different types of outdoor events, such as criteriums versus stage races versus gran fondos, and how can riders use indoor training to prepare for the specific demands of outdoor events, such as cornering, braking, and acceleration, and what are the key considerations for riders who are new to indoor training or are looking to incorporate it into their existing training program for the first time.