The degree of detraining is dependent on several factors.

First, the duration of training before cessation. Residual training effects usually follow an analogy made by Vladmimir Zatsiorsky (author of The Science and Practice Of Strength Training) and Dr. William Kraeme: "soon ripe, soon rotten". This suggest that physical attributes that have been developed for a longer time, can be maintained for longer before there is a decrease in performance following a deload or periods of no training. In a similar view, Nick Winkleman and Issurin note that adaptations that result from a structural change, such as cardiac remodelling, muscle capillizaration and muscle hypertrophy last longer after detraining, compared to adaptations that occur on the enzymatic level such as anaerobic performance, hydrogen ion buffering and phosphocreatine storage. A great example of this in the strength training realm and one that many of you can relate to is the fact that many lifters and trainees are able to maintain their muscle mass even with prolonged periods of low volume, high-intensity training. Muscle mass loss is a fear many bodybuilders and fitness enthusiasts have. But if you've spent some quality time building that muscle and protein intake during periods of deload are high, chances are, it won't waste away as quickly or as easy as you think.

Secondly, the training age and experience of an athlete/trainee also plays a factor in training residuals. Older and more advanced level athletes tend to experience longer residuals because of their higher accumulated training time, in line with the "soon ripe, soon rotten" analogy.

Lastly, the intensity used during retraining or detraining loads plays a role in mediating training residuals as well. The use of moderate to high-intensity training slows down the rate of detraining, however, volume must be controlled in order to avoid disrupting the recovery process. Residual training effects are of extreme importance especially when using non-traditional periodization methods like block periodization or when managing the training loads for sports team athletes during the in-season or competition-period. Residual training effects also give way to the method of tapering, where volume is decreased to reduce fatigue and allow for the expression of fitness (Fitness-Fatigue Model).

An extreme example of this is a study carried out by Pritchard et al. 2017, where resistance trained males completed two 4-week training programs followed by either 3.5 or 5.5 days of training cessation. Following this deload (in the form of no training, NOT lowered volume), peak force in the bench press and mid-thigh pull increased above baseline.