Effects of Yoga Training Applied with Telerehabilitation on Core Stabilization and Physical Fitness in Junior Tennis Players: A Randomized Controlled Trial

INTRODUCTION

This study aimed to investigate the effects of yoga training applied with telerehabilitation on core stability, and strength, balance, flexibility, upper extremity stability, body awareness, and quality of life in tennis players aged 6-18 years.

METHODS

Forty tennis players were randomly divided into two groups to participate in this study. The control group (n = 20) continued tennis training and was informed about the importance of the core region. The yoga group (n = 20) received yoga training with telerehabilitation 2 days a week for 8 weeks. Athletes were evaluated with sport-specific core muscle strength and stability tests, the back scratch test, the sit and reach test, the flamingo balance test, the y-balance test (lower quarter), the upper extremity closed kinetic chain stability test, the SF-36, and body awareness questionnaires. Measurements have been done in the tennis club before and after the 8 weeks of training.

RESULTS

A significant increase was determined in core strength and stability, sit and reach, back scratch test, upper extremity stability, and body awareness questionnaire in the yoga group (p < 0.001). Flamingo and Y balance test results were significant (p < 0.002). Positive improvements were found in SF-36s energy-fatigue level, mental well-being, social function (p < 0.042), pain (p < 0.005), and general health (p < 0.001). A significant increase was observed in the core strength measurement mean score in the control group (p < 0.018). Sit and reach test, flamingo test, and body awareness questionnaire were found to be significant after the intervention (p < 0.001). Significant improvements were found in the pain (p < 0.042), and mental well-being (p < 0.001) sub-parameters of the SF-36.

CONCLUSION

In the study, it was concluded that yoga training applied with telerehabilitation in tennis players aged 6-18 has a positive effect on core strength, and stabilization, physical fitness parameters, quality of life, and body awareness.

Einleitung

Mit dieser Studie sollten die Auswirkungen von Yogatraining in Verbindung mit Telerehabilitation auf Rumpfstabilität, Kraft, Gleichgewicht, Flexibilität, Stabilität der oberen Extremität, Körperwahrnehmung und Lebensqualität bei Tennisspielern im Alter von 6 bis 18 Jahren untersucht werden.

Methoden

Vierzig Tennisspieler wurden randomisiert in zwei Gruppen aufgeteilt und nahmen an der Studie teil. Die Kontrollgruppe (n = 20) führte das Tennistraining fort und wurde über die Bedeutung der Rumpfregion aufgeklärt. Die Yoga-Gruppe (n = 20) erhielt an 2 Tagen pro Woche über 8 Wochen ein Yogatraining mittels Telerehabilitation. Die Sportler wurden mittels sportartspezifischer Tests zur Kraft und Stabilität der Rumpfmuskulatur, dem Back-Scratch-Test, dem Sit-and-Reach-Test, dem Flamingo-Balance-Test, dem Y-Balance-Test (unteres Viertel), dem Closed Kinetic Chain Upper Extremity Stability Test sowie dem SF-36 und dem Fragebogen zur Körperwahrnehmung beurteilt. Die Messungen wurden im Tennisclub vor und nach dem 8-wöchigen Training durchgeführt.

Ergebnisse

In der Yoga-Gruppe wurde ein signifikanter Anstieg der Rumpfkraft und -stabilität sowie im Sit-and-Reach-Test, Back-Scratch-Test, der Stabilität der oberen Extremität und beim Fragebogen zur Körperwahrnehmung festgestellt (p < 0,001). Die Ergebnisse des Flamingo-Balance-Tests und des Y-Balance-Tests fielen signifikant aus (p < 0,002). Verbesserungen zeigten sich beim SF-36-Score für Energieverlust und Erschöpfung, psychisches Wohlbefinden, soziale Funktion (p < 0,042), Schmerzen (p < 0,005) und allgemeine Gesundheit (p < 0,001). In der Kontrollgruppe war ein signifikanter Anstieg des mittleren Scores der Rumpfkraftmessung zu beobachten (p < 0,018). Der Sit-and-Reach-Test, der Flamingo-Test und der Fragebogen zur Körperwahrnehmung fielen nach der Intervention signifikant aus (p < 0,001). Bei den Unterparametern Schmerz und psychisches Wohlbefinden des SF-36 wurden signifikante Verbesserungen festgestellt (p < 0,042 bzw. p < 0,001).

Diskussion/Schlussfolgerung

Die Studie kam zu der Schlussfolgerung, dass Yoga-Training bei Anwendung mittels Telerehabilitation bei Tennisspielern im Alter von 6 bis 18 Jahren einen positiven Effekt auf die Rumpfkraft und -stabilisierung, die Parameter der körperlichen Fitness, die Lebensqualität und die Körperwahrnehmung hat.

Short-Term Effects of Specific Sensorimotor Training on Postural Assessment in Healthy Individuals: A Pilot Study with a Randomized Placebo-Controlled Trial

It is well-known that sensorimotor training aims to increase the performance of the sensorimotor system to maintain an upright position. Through the use of a randomized placebo-controlled trial, the specific aim of this study was to investigate the short-term effects of a specific session of sensorimotor training on postural balance, stability and coordination in healthy, recreationally active participants. Ninety subjects were randomly allocated into three groups: experimental (n = 30), placebo (n = 32) and control (n = 28). The experimental group performed a 5 min warm-up, with the sensorimotor training consisting of 60-min specific sensorimotor exercises; the control group was not allowed to perform any sensorimotor training; the placebo group observed a video clip of an individual belonging to the experimental group performing the sensorimotor training accurately. All participants were seen three times per week for 4 weeks. Before and after the entire training, all groups of participants undertook stabilometric parameter assessment. The intervention-mediated sensorimotor training confirmed significant enhancement in the proprioceptive system. Significant improvement in the motor and/or sensory function was observed in the experimental and placebo groups. In conclusion, our findings suggest that specific sensorimotor training performed 3 days per week for 4 weeks could improve postural balance, stability and coordination in healthy individuals.

Effects of core training on dynamic balance stability: A systematic review and meta-analysis

Core stability has a strong relationship with dynamic balance stability (DBS). The purpose of this review with meta-analysis was to analyse the effects of core training programmes from different studies on DBS. A literature search was performed using different databases. Subgroups analyses on duration, training frequency, total sessions, chronological age, training status, equipment and movements were performed. A random-effects model for meta-analyses was used. Thirteen studies were selected for the systematic review and 10 for the meta-analysis, comprising 226 participants. A moderate effect was noted for core training on DBS (p < 0.001; ES = 0.634). Greater DBS improvements were found in core training interventions with ≤6 weeks (ES = 0.714), after high volume (ES = 0.787) and more frequent interventions (ES = 0.787), as well as in younger participants (ES = 0.832). In addition, body weight exercises may be better than med ball, swiss ball or band resisted exercises. Core training improves DBS among athletes and a non-trained population, creating a more solid stable base that allows better lower extremity movements. This could be more effective considering different modulators ≤6 weeks intervention, >2 sessions per week, >17 total sessions, body weight core programmes and applied to ≤18.0 years old.

Effects of core stability exercise combined with virtual reality in collegiate athletes with nonspecific low back pain: a randomized clinical trial

Background

Nonspecific low back pain (LBP) in collegiate athletes is shown to be accompanied by poor core endurance. Consequently, trunk muscle stabilization exercises for lumbar instability are widely used. Virtual reality (VR) training can activate the cerebral cortex and enhance the cortex to control balance and improve motion function. The purpose of the study was to assess the effect of combined core stability exercises (CSE) and VR training in improving body balance and function in collegiate male athletes with nonspecific low back pain (LBP).

Results

The post-values of the experimental group were significantly higher than that of the control group for the dynamic balance in anterior (p = 0.031), posterolateral (p = 0.034), and posteromedial (p = 0.037) directions. Moreover, there was a significant difference in the post-values of both groups regarding reducing the Micheli Functional Scale in favor of the experimental group (p = 0.012).

Conclusions

CSE training plus virtual reality is more effective than CSE training alone in improving total body balance and dysfunction level in collegiate male athletes with nonspecific LBP. It is recommended that clinicians consider CSE combined with VR to maximize the improvement in overall body balance when developing rehabilitation programs for collegiate athletes with nonspecific low back pain.

Trial registration

Pan African Clinical Trial Registry, PACTR201907749053096. Retrospectively registered on 15 April 2019. https://pactr.samrc.ac.za/Researcher/ManageTrials.aspx

The Role of Trunk Muscle Strength for Physical Fitness and Athletic Performance in Trained Individuals: A Systematic Review and Meta-Analysis

BACKGROUND

The importance of trunk muscle strength (TMS) for physical fitness and athletic performance has been demonstrated by studies reporting significant correlations between those capacities. However, evidence-based knowledge regarding the magnitude of correlations between TMS and proxies of physical fitness and athletic performance as well as potential effects of core strength training (CST) on TMS, physical fitness and athletic performance variables is currently lacking for trained individuals.

OBJECTIVE

The aims of this systematic review and meta-analysis were to quantify associations between variables of TMS, physical fitness and athletic performance and effects of CST on these measures in healthy trained individuals.

DATA SOURCES

PubMed, Web of Science, and SPORTDiscus were systematically screened from January 1984 to March 2015.

STUDY ELIGIBILITY CRITERIA

Studies were included that investigated healthy trained individuals aged 16-44 years and tested at least one measure of TMS, muscle strength, muscle power, balance, and/or athletic performance.

STUDY APPRAISAL AND SYNTHESIS METHODS

Z-transformed Pearson's correlation coefficients between measures of TMS and physical performance were aggregated and back-transformed to r values. Further, to quantify the effects of CST, weighted standardized mean differences (SMDs) of TMS and physical performance were calculated using random effects models. The methodological quality of CST studies was assessed by the Physiotherapy Evidence Database (PEDro) scale.

RESULTS

Small-sized relationships of TMS with physical performance measures (-0.05 ≤ r ≤ 0.18) were found in 15 correlation studies. Sixteen intervention studies revealed large effects of CST on measures of TMS (SMD = 1.07) but small-to-medium-sized effects on proxies of physical performance (0 ≤ SMD ≤ 0.71) compared with no training or regular training only. The methodological quality of CST studies was low (median PEDro score = 4).

CONCLUSIONS

Our findings indicate that TMS plays only a minor role for physical fitness and athletic performance in trained individuals. In fact, CST appears to be an effective means to increase TMS and was associated with only limited gains in physical fitness and athletic performance measures when compared with no or only regular training.

Dynamic Balance Differences as Measured by the Star Excursion Balance Test Between Adult-aged and Middle-aged Women

Background:

Middle-aged women have less postural control than younger women. The Star Excursion Balance Test is a functional and inexpensive postural control measurement tool that is sensitive to age-related changes in balance.

Hypothesis:

The middle-aged females will experience lower excursion scores compared with the younger women.

Methodology:

Fifty-three healthy, recreationally active women were divided into 2 groups: adult-aged (n = 29; age range, 23-39 years) and middle-aged (n = 24; age range, 40-54 years). Each participant performed 3 reaches for 3 trials (anteromedial, medial, posteromedial) in a randomized order. The 3 reach trials were converted to a normalized value (percentage of participant’s height) and assessed as an overall mean for the 1-way analysis of variance. Intraclass correlation coefficients and 95% confidence intervals were calculated.

Results:

No differences were found for body mass index and height; however, age was different between groups (P < 0.01). Intraclass correlation coefficient^2,3 values for the 3 directions ranged from 0.72 to 0.97. The adult-aged women were able to reach farther in all 3 directions when tested with the Star Excursion Balance Test (6.8-7.6 cm, P < 0.05).

Conclusion:

Lower postural control scores based on the Star Excursion Balance Test were found for the older women. The younger women were able to reach approximately 7 cm farther during the anterior, anteromedial, and posteromedial excursions.