###### Abstract
While some of the conflicting results observed in previous studies regarding skiers' postural control have arisen from unspecific testing protocols, such as laboratory-based tests that fail to differentiate between skiers of varying skill levels [20], recent investigations using more challenging, sport-specific protocols (e.g., wearing ski boots in dynamic balance tests) have suggested that experienced skiers employ hip strategies that may not be captured by standard laboratory testing [42]. Consequently, when applying more specific balance tests tailored for alpine skiers, the results appear reliable and sensitive, even for elite skiers [20]. In outdoor sports such as alpine skiing, the need for valid and reliable on-field performance assessments is particularly critical due to the complex environmental factors [33]. Standardized procedures employing advanced wearable technologies are increasingly valuable, as they enable an evaluation of biomechanical parameters and uncover subtle yet critical details about skiing performance [33]. For example, tools, such as GNSS systems, can provide real-time or near-real-time data on an athlete's performance [33]. However, ensuring the accuracy and validity of these technologies are crucial to avoid drawing incorrect conclusions [33]. In this regard, reliable feedback is essential; however, the majority of coaches must rely on their own visual evaluation, which might not be sufficiently sensitive to discern the subtle yet significant differences in technique [43]. As a result, the recent advancements in wearable technology offer a promising solution by providing detailed, quantitative data on skiing technique, facilitating more precise and informed interventions. This research seeks to address three interrelated hypotheses, aiming to contribute to the understanding and optimization of the performance of junior alpine skiers. Firstly, we hypothesize that targeted balance training can result in measurable improvements in balance metrics and skiing technique. This hypothesis arises from the recognition that despite often being underemphasized in traditional skiing training, balance is a fundamental determinant of overall performance. Secondly, we propose that wearable technology can provide distinctive insights into the performance and technique of junior alpine skiers. These technologies are expected to deliver immediate data, enhancing conventional coaching strategies. By facilitating more tailored and precise training methodologies, wearable technology has the potential to significantly optimize athlete performance. Thirdly, we hypothesize that a balance development protocol can have a positive impact on static balance values and explosive force. This aspect highlights the interconnected nature of balance training and its broader implications for athletic performance. By integrating these hypotheses, this research aims to validate a comprehensive approach to improving junior skiers' performance. Focusing on the combination of balance training and advanced wearable technology, this study seeks to bridge the existing gaps in skiing training methods and foster a deeper understanding of performance optimization in this highly demanding sport.