## 4 Discussion
In our research, posturography was performed between the third and sixth minutes following the fatiguing protocol, while all the cited authors, excluding [PERSON] [18], carried out measurements immediately after the effort. The protocol used in our study reduced the aggravation of body sway arising from post-exercise tachycardia, hyperventilation, as well as body liquid movement. Another aspect to be considered in trying to explain divergent results is that the anaerobic fatigue in our study was induced via sport-specific exercise, while other authors used non-specific exercise. The observed postural control reaction may, therefore, be characteristic only of road cyclists in whom permanent large exposure to fatigue of various etiologies, in combination with destabilising factors, potentially causing an adaptation in postural control corrective responses. The significant MF decrease noted in our study could also suggestthat road cycling training modifies the implemented corrective strategy. Our suggestion is supported by the work of [PERSON] et al. [39] who observed that in young subjects, balance strategies may change--from the ankle to the hip strategy--when the fatigue is localised at the ankle musculature level. Due to the fact that MF is part of the ankle corrective strategy, it would be probable that a high level of calf muscle fatigue caused by cycling exercise may result in a shift to the hip corrective strategy as that is superior in postural control regulation. This study showed that short-term, high intensity effort (such as acceleration during a road race) inducing anaerobic fatigue deteriorates postural control in adolescent cyclists, and therefore may increase the risk of falls during competition or training. [PERSON] et al. [46] have reported that 10-13% of all competing Flemish youth riders experience falls during a race and each such incident results in some injuries. Moreover, [PERSON] et al. [47] have suggested that falls cause almost half of the injuries among professional road cyclists. We think that the situations in which anaerobic fatigue is combined with technically difficult and unsafe sectors of the competition/training may be especially dangerous for athletes' health, e.g., a downhill ride from a pass with high speed after a mountain premium sprint. Due to this, we recommend implementing sport-specific balance exercises carried out in anaerobic fatigue conditions in the training programmes of cyclists. Meta-analysis performed by [PERSON] et al. showed that such exercises have a positive effect on balance performance; therefore, their implementation may reduce the risk of falls and the traumatic injuries induced by them. The limitations of this study included: (i) the lack of additional measurements regarding body sway immediately after the effort; (ii) the lack of cardiopulmonary parameter registration during the restitution period, showing fatigue status; (iii) potential visual or auditory interference due to not wearing ear muffs and eye masks during postural control assessment with eyes closed; (iv) the lack of a control group, e.g., amateur athletes or those representing different sports disciplines; (v) performing research on a homogeneous (in terms of sex and age) population; thus, the results cannot be generalised to a broader population.