The relationship between resting heart rate variability and sportive performance, sleep and body awareness in soccer players

BMC Sports Science Medicine and Rehabilitation, Journal Year: 2025, Volume and Issue: 17(1)

Published: March 24, 2025

Heart rate variability (HRV) is a key marker of autonomic nervous system function and has been proposed as tool for monitoring training adaptations. However, its relationship with performance beyond aerobic capacity remains unclear in football players. This study aimed to examine the associations between resting HRV capacity, agility, neuromuscular coordination, sleep quality, body awareness. Twenty-five male players (mean age 20 ± 3 years) underwent assessment via Polar H10 system. Performance tests included m Shuttle Test (VO2max), Illinois Agility Test, Hexagon (neuromuscular coordination), Vertical Jump Tests (muscular strength). Sleep quality awareness were assessed using Pittsburgh Quality Index Body Awareness Questionnaire. Score was positively correlated VO2max (r = 0.4, p 0.04), while LF/HF ratio showed negative correlation shuttle test distance (rs=-0.52, 0.007). Mean RR coordination 0.56, 0.004), 0.45, 0.024), (rs 0.46, 0.019). No significant correlations found muscular strength. Resting associated indicators players, supporting potential use physiological readiness Future research should establish reference values evaluate HRV-based interventions enhancement.

Language: Английский

Diagnostic accuracy, reliability, and construct validity of the German quick mild cognitive impairment screen

BMC Geriatrics, Journal Year: 2024, Volume and Issue: 24(1)

Published: July 18, 2024

Abstract Background Early detection of cognitive impairment is among the top research priorities aimed at reducing global burden dementia. Currently used screening tools have high sensitivity but lack specificity their original cut-off, while decreasing cut-off was repeatedly shown to improve specificity, cost lower sensitivity. In 2012, a new tool introduced that aims overcome these limitations – Quick mild screen (Qmci). The English Qmci has been rigorously validated and demonstrated diagnostic accuracy with both good specificity. We determine optimal value for German Qmci, evaluate its accuracy, reliability (internal consistency) construct validity. Methods retrospectively analyzed data from healthy older adults (HOA; n = 43) individuals who clinical diagnosis ‘mild neurocognitive disorder’ (mNCD; 37) biomarker supported characterization etiology mNCD three studies ‘Brain-IT’ project. Using Youden’s Index, we calculated score distinguish between HOA mNCD. Receiver operating characteristic (ROC) curve analysis performed based on area under (AUC). Sensitivity, positive predictive (PPV), negative (NPV) were calculated. Reliability by calculating Cronbach’s α. Construct validity assessed analyzing convergent Qmci-G subdomain scores reference assessments measuring same domain. Results ≤ 67 (AUC 0.96). This provided 91.9% 90.7%. PPV NPV 89.5% 92.9%, respectively. α 0.71 (CI 95% [0.65 0.78]). subtests learning memory. Subtests measure executive functioning and/or visuo-spatial skills showed mixed findings did not correlate as strongly expected assessments. Conclusion Our corroborate existing evidence Qmci’s reliability, Additionally, shows potential in resolving commonly tools, such Montreal Cognitive Assessment. To verify Qmci-G, testing environments primary health care direct comparisons standard utilized settings are warranted.

Language: Английский

Diagnostic accuracy of heart rate variability as a screening tool for mild neurocognitive disorder

Frontiers in Aging Neuroscience, Journal Year: 2024, Volume and Issue: 16

Published: Dec. 17, 2024

Mild neurocognitive disorder (mNCD) is recognized as an early stage of dementia and gaining attention a significant healthcare problem due to current demographic changes increasing numbers patients. Timely detection mNCD provides opportunity for interventions that can potentially slow down or prevent cognitive decline. Heart rate variability (HRV) may be promising measure, it has been shown sensitive impairment. However, there currently no evidence regarding the diagnostic accuracy HRV measurements in context population. This study aimed evaluate vagally-mediated (vm-HRV) screening tool investigate relationship between vm-HRV with executive functioning depression older adults who have mNCD.

Language: Английский