PhD, Associate Professor A.V. Turmanidze¹
PhD, Associate Professor I.V. Merkulova¹
PhD, Associate Professor V.P. Chicherin^1
1State University of Management, Moscow

Keywords: rehabilitation, myofascial massage, tennis.

Introduction. Lawn tennis is an asymmetric sport, which leads to an imbalance of muscle tone in athletes, especially in the thoracic spine. Hyperexertion in this area can cause limited mobility, pain, and decreased effectiveness of gaming movements. Myofascial release using rolls is a common recovery method. "TreneRoll" is a specialized roll designed for deep muscle and fascia training [1].
The aim of the study was to evaluate the effectiveness of TreneRoll in reducing hyperexertion in the thoracic spine in tennis players. 
Research methodology and organization The research involved 30 male tennis players aged 18-35 years with signs of hyperexertion in the thoracic region, who were randomly divided into equal groups of 15 people. The following control methods were used in the study protocol: EMG (electromyography) to measure muscle tone, goniometry – assessment of spinal mobility, VAS (visual analog scale) for subjective assessment of pain. 
The results of the study and their discussion Rehabilitation activities in the main group (OG) using TreneRoll took place for 10 minutes weekly (5 days a week) for 4 weeks.  Technique: rolling the thoracic region in positions: lying on a roll along the spine; transverse rolling of the upper back; diagonal movements to work out the intercostal muscles.  In the control group (KG), athletes performed standard stretching without using a roller. Repeated measurements were performed after 2 and 4 weeks (EMG, goniometry, VAS). As a result of the experiment, hypertension (EMG) decreased: OH, there was a decrease in muscle activity by 25-30% (p<0.05), KG – by 10-12% (p>0.05). Improved mobility (goniometry): chest rotation increased by 15-20° (p<0.01), KG – by 5-8° (p>0.05). Pain Reduction (YOURS): In the main group, pain decreased from 6.5 to 2.1 points (p<0.001), in the control group – from 6.3 to 4.8 points (p>0.05). 
Conclusion. The experimental results confirm that the use of TreneRoll helps to reduce hypertension due to myofascial release, improve thoracic mobility, and reduce pain. The mechanism of action is associated with the restoration of microcirculation, reduction of trigger activity, restoration of elasticity of fascia and can be recommended for use in the training process of athletes engaged in lawn tennis.
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References

1. Wiewelhove T, Döweling A, Schneider C, Hottenrott L, Meyer T, Kellmann M, Pfeiffer M, Ferrauti A. A Meta-Analysis of the Effects of Foam Rolling on Performance and Recovery. Front Physiol. 2019 Apr 9;10:376. doi: 10.3389/fphys.2019.00376.