Central and Peripheral Shoulder Fatigue Pre-screening Using the Sigma–Lognormal Model: A Proof of Concept

Laurent, Anaïs; Plamondon, Réjean; Begon, Mickaël

doi:10.3389/fnhum.2020.00171

Cited by 8 publications

(11 citation statements)

References 82 publications

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“…Repetitive movements, such as shooting in handball, generate neuromuscular fatigue and, therefore, muscular and kinematic adaptations [ 46 ] that can lead to injuries [ 47 ]. Thus, detecting shoulder fatigue is crucial to avoid injuries [ 48 ]. In our study, we conducted a fatigue protocol consisting of 20 repetitions at 180°/s.…”

Section: Discussionmentioning

confidence: 99%

Effects of an 11-Week Detraining, Imposed by the COVID-19 Confinement, on Handball Players’ Shoulder Rotator Isokinetic Profile, Shoulder Range of Motion, and Ball Release Velocity

Batalha,

Sousa,

Fernandes

et al. 2023

Medicina

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Background and Objectives: The COVID-19 confinement significantly impacted the physical condition of athletes. However, the detraining impacts of this period on the shoulder rotator and range of motion in handball players have not been studied. Thus, the main aim of this study was to investigate the effect of this 11-week detraining period, imposed by the COVID-19 pandemic confinement, on the shoulder rotator isokinetic profile (peak torque, ratio, fatigue index), shoulder rotator and flexion range of motion, and ball release velocity in handball players. Materials and Methods: A total of 16 handball players, with a mean age of 22.38 (5.28) years, participated in this study. The isokinetic strength was assessed using two protocols (three repetitions at an angular velocity of 60°/s and 20 repetitions at an angular velocity of 180°/s). In addition, the range of motion and ball release (at jump and standing shots) were measured. All these measurements were assessed before and after the COVID-19 confinement. Results: The results showed a significant reduction in the peak torque of the external rotation of their dominant and non-dominant shoulders. In addition, confinement significantly increased the fatigue index of external rotation and internal rotation and reduced the range of motion of internal rotation. Additionally, the ball release velocity during standing and jump shots was significantly reduced. Conclusions: These results suggested that strengthening external and internal rotation as well as recovering the internal rotation range of motion may be necessary after a detraining period in order to prevent shoulder injuries.

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Section: Discussionmentioning

confidence: 99%

Effects of an 11-Week Detraining, Imposed by the COVID-19 Confinement, on Handball Players’ Shoulder Rotator Isokinetic Profile, Shoulder Range of Motion, and Ball Release Velocity

Batalha,

Sousa,

Fernandes

et al. 2023

Medicina

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“…Several observational studies have suggested that the symptoms of cognitive deficiency can be obvious with the augmentation of RT. 22 , 23 , 24 There is evidence in UKB to support RT as a suitable proxy for cognitive function. 25 In addition, RT was significantly correlated with the digit symbol substitution test in our study population ( P <0.001).…”

Section: Methodsmentioning

confidence: 99%

Associations of Modified Healthy Aging Index With Major Adverse Cardiac Events, Major Coronary Events, and Ischemic Heart Disease

Huang

Zhuang

Song

et al. 2023

JAHA

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Background The Healthy Aging Index (HAI) has been regarded as useful in capturing the health status of multiple organ systems. However, to what extent the HAI is associated with major cardiovascular events remains largely unknown. The authors constructed a modified HAI (mHAI) to quantify the association of physiological aging with major vascular events and explored how the effects of a healthy lifestyle can modify this association. Methods and Results The participants with either missing values of any individual mHAI component or major illnesses such as heart attack, angina and stroke, and self‐reported cancer at baseline were excluded. The mHAI components include systolic blood pressure, reaction time, forced vital capacity, serum cystatin c, and serum glucose. The authors used Cox proportional hazard models to quantify the association of mHAI with major adverse cardiac events, major coronary events, and ischemic heart disease. Cumulative incidence at 5 and 10 years was estimated, and joint analyses were stratified by age group and 4 mHAI categories. The mHAI was significantly correlated with major cardiovascular events, which is a better reflection of the aging level of the body than chronological age. An mHAI was calculated in 338 044 participants aged 38 to 73 years in the UK Biobank. Each point increase in the mHAI was associated with a 44% higher risk of major adverse cardiac events (adjusted hazard ratio [aHR], 1.44 [95% CI, 1.40–1.49]), 44% higher risk of major coronary events (aHR, 1.44 [95% CI, 1.40–1.48]), and 36% higher risk of ischemic heart disease (aHR, 1.36 [95% CI, 1.33–1.39]). The percentage of population‐attribution risk was 51% (95% CI, 47–55) for major adverse cardiac events, 49% (95% CI, 45–53) for major coronary events, and 47% (95% CI, 44–50) for ischemic heart disease, which means that a substantial portion of these events could be prevented. Systolic blood pressure was the factor most significantly associated with major adverse cardiac events (aHR, 1.94 [95% CI, 1.82–2.08]; percentage of population‐attribution risk, 36%), major coronary events (aHR, 2.01 [95% CI, 1.85–2.17]; percentage of population‐attribution risk, 38%), and ischemic heart disease (aHR, 1.80 [95% CI, 1.71–1.89]; percentage of population‐attribution risk, 32%). A healthy lifestyle significantly attenuated mHAI associations with incidence of vascular events. Conclusions Our findings indicate that higher mHAI is associated with increased major vascular events. A healthy lifestyle may attenuate these associations.

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“…Serum lactate and IL-6 have been identified as the most accurate and valid biomarkers to measure muscle fatigue, although they are influenced by workload conditions and timing of testing with respect to exercise[ 27 ]. Other non-invasive methods have been employed for the detection of peripheral fatigue ( e.g., acoustic myography)[ 28 ]. On the other hand, central fatigue can be assessed either with percutaneous nerve stimulation[ 29 ] or transcranial magnetic stimulation during maximal contractions[ 30 ].…”

Section: Assessment Of Fatiguementioning

confidence: 99%

Understanding fatigue in primary biliary cholangitis: From pathophysiology to treatment perspectives

Lynch¹,

Campani²,

Innocenti³

et al. 2022

WJH

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Fatigue is considered one of the most frequent and debilitating symptoms in primary biliary cholangitis (PBC), affecting over 50% of PBC patients. One in five patients with PBC suffer from severe fatigue, which significantly impairs quality of life. Fatigue is made up of a central and a peripheral component, whose pathophysiology is still greatly unresolved. Central fatigue is characterised by a lack of self-motivation and can manifest both in physical and mental activities (lack of intention). Peripheral fatigue includes neuromuscular dysfunction and muscle weakness (lack of ability). Peripheral fatigue could be explained by an excessive deviation from aerobic to anaerobic metabolism leading to excessive lactic acid accumulation and therefore accelerated decline in muscle function and prolonged recovery time. As opposed to itching, and with the exception of end-stage liver disease, fatigue is not related to disease progression. The objective of this review is to outline current understanding regarding the pathophysiology of fatigue, the role of comorbidities and contributing factors, the main tools for fatigue assessment, the failed therapeutic options, and future treatment perspectives for this disabling symptom. Since fatigue is an extremely common and debilitating symptom and there is still no licensed therapy for fatigue in PBC patients, further research is warranted to understand its causative mechanisms and to find an effective treatment.

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Central and Peripheral Shoulder Fatigue Pre-screening Using the Sigma–Lognormal Model: A Proof of Concept

Cited by 8 publications

References 82 publications

Effects of an 11-Week Detraining, Imposed by the COVID-19 Confinement, on Handball Players’ Shoulder Rotator Isokinetic Profile, Shoulder Range of Motion, and Ball Release Velocity

Effects of an 11-Week Detraining, Imposed by the COVID-19 Confinement, on Handball Players’ Shoulder Rotator Isokinetic Profile, Shoulder Range of Motion, and Ball Release Velocity

Associations of Modified Healthy Aging Index With Major Adverse Cardiac Events, Major Coronary Events, and Ischemic Heart Disease

Understanding fatigue in primary biliary cholangitis: From pathophysiology to treatment perspectives

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