What’s the minimum effective dose of Zone 2 per week for a cyclist looking to improve cardiovascular fitness without overdoing it? Is it more effective to do one longer ride of 3-4 hours at a moderate intensity, or break it up into shorter rides of 1-2 hours throughout the week?
Are there any specific physiological adaptations that occur within a certain time frame of Zone 2 training, and if so, how do these adaptations impact overall fitness? For example, does training in Zone 2 for 2 hours lead to greater improvements in mitochondrial density and capillarization compared to training for 1 hour?
How does Zone 2 training impact muscular adaptations, such as increased slow-twitch fiber recruitment and increased myoglobin levels? Is there a minimum threshold for Zone 2 training that needs to be met in order to elicit these adaptations?
What role does Zone 2 training play in improving lactate threshold, and is there a specific duration or frequency of Zone 2 training that is most effective for improving LT? Are there any other factors that influence the effectiveness of Zone 2 training, such as nutrition, sleep, and overall training volume?
Is it possible to overdo Zone 2 training, and if so, what are the consequences of excessive Zone 2 training? How can a cyclist balance the need for Zone 2 training with the need for other types of training, such as high-intensity interval training and strength training?
Are there any differences in the minimum effective dose of Zone 2 training for different types of cyclists, such as road cyclists, mountain bikers, and triathletes? How does the specific demands of each discipline impact the optimal dose of Zone 2 training?