Since I’m on duty for work during the weekends I only can leave my house up to a limited perimeter. Hence long outdoor Z2 rides aren’t an option for me right now.
With this limitation in mind is the substitution of long Z2 rides (4+ hours) by a 2 hour sweetspot (e.g. wright peak) supplemented with one hour of Z2 indoor workout a viable alternative?
I know nothing beats the adaptations of long Z2 rides but is the given alternative in the grand scheme of things a wise thing to pursue?
I looked for studies which researched this kind of hypothesis but I came up empty. Maybe because I’m not exactly a scholar in this field.
PS: 3 to 3.5 hour indoor workouts is the maximum I can endure before I’m really worn out.