Has anyone conducted an in-depth assessment of the Fitlaya Fitness Ab Machine for home gym use? I’m particularly interested in feedback regarding its durability under frequent, high-intensity training, the adjustability for users of varying heights, and the relative efficacy compared to traditional floor ab exercises or alternative ab machines. If possible, please include insights regarding ease of assembly, noise levels during operation, and any potential wear-and-tear issues over time. Empirical data or quantified outcomes related to core strength or hypertrophy improvements would be especially helpful.