A study has just been published about the training effect on mucked tendons. When starting a weight training program initial changes in strength are displayed in the nerveous system; more
efficient neural conduction and mucle recruitment. After 8 to 12 weeks and consotstent loading the mucles would then hypertrophy or grow. However tendon tension increases which are necesary to be able to effectively lift heavier weights without injury takes 11 to 16 weeks. Therefore it is important to start gradulally to build up tension in the tendons for safe lifting.

The most interesting applications of the study are in regards to the detraining effect. After 1 month of not training the tendon becomes slack and you lose your gains, where as mucsle takes 2-3 months. If you stop training with weights you have to give yourself time to rebuild tendon tension when starting back up again to prevent injury.