Shinji Nemoto,
Shinji Nemoto
Institution:
Email:
Tohru Nakabo,
Tohru Nakabo
Institution:
Email:
Naonori Tashiro,
Naonori Tashiro
Institution:
Email:
Asami Kishino,
Asami Kishino
Institution:
Email:
Akira Yoshikawa,
Akira Yoshikawa
Institution:
Email:
Daisuke Nakamura,
Daisuke Nakamura
Institution:
Email:
Eiichi Geshi
Eiichi Geshi
Institution:
Email:
Peak oxygen uptake (VO2), evaluated as exercise tolerance, is a strong predictor of life prognosis regardless of health condition. Several previous studies have reported that peak VO2 is higher in those with a greater decrease in muscle oxygen saturation (SmO2) in the active muscles during increment...
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Peak oxygen uptake (VO2), evaluated as exercise tolerance, is a strong predictor of life prognosis regardless of health condition. Several previous studies have reported that peak VO2 is higher in those with a greater decrease in muscle oxygen saturation (SmO2) in the active muscles during incremental exercise. However, the skeletal muscle characteristics of individuals exhibiting a greater decrease in SmO2 during active muscle engagement in incremental exercise remain unclear. This study aimed to clarify the relationship among muscle strength, muscle endurance, and skeletal muscle oxygenation dynamics in active leg muscles during incremental exercise. Twenty-four healthy young men were included and categorized into the non-moderate-to-high muscular strength and endurance group (those with low leg muscle strength, endurance, or both; n = 11) and the moderate-to-high muscular strength and endurance group (those with both moderate-to-high leg muscle strength and endurance; n = 13). All participants underwent cardiopulmonary exercise testing combined with near-infrared spectroscopy to assess whole-body peak VO2 and the change in SmO2 at the lateral vastus lateralis from rest to each exercise stage as skeletal muscle oxygenation dynamics. A linear mixed-effects model, with the change in SmO2 from rest to each stage as the dependent variable, individual participants as random effects, and group and exercise load as fixed effects, revealed significant main effects for both group (P = 0.001) and exercise load (P< 0.001) as well as a significant interaction between the two factors (P <0.001). Furthermore, multiple-comparison test results showed that the change in SmO2 from rest to 40%–100% peak VO2 was significantly higher in the moderate-to-high muscular strength and endurance group than in the non-moderate-to-high muscular strength and endurance group. Maintaining both muscle strength and endurance at moderate or higher levels contributes to high skeletal muscle oxygenation dynamics (i.e., greater decrease in SmO2) during moderate- or high-intensity exercise.
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2 weeks ago
Arturo Ladriñán Maestro,
Arturo Ladriñán Maestro
Institution: Research Group on Exercise Therapy and Functional Rehabilitation, Faculty of Sports Sciences, Universidad Europea de Madrid, Madrid
Email:
Jorge Sánchez-Infante,
Jorge Sánchez-Infante
Institution: Department of Sport Sciences, Faculty of Sport Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón
Email:
Daniel Martín Vera,
Daniel Martín Vera
Institution: Department of Physiotherapy, Faculty of Sport Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón
Email:
Alberto Sánchez Sierra
Alberto Sánchez Sierra
Institution: Department of Physiotherapy, Faculty of Sport Sciences, Universidad Europea de Madrid, 28670 Villaviciosa de Odón
Email:
Background
The fatigue of the inspiratory musculature, particularly the diaphragm, has been demonstrated to exert systemic effects on the body, impacting cardiovascular and performance outcomes. This study aimed to evaluate the influence of an inspiratory muscle fatigue protocol on respiratory musc...
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Background
The fatigue of the inspiratory musculature, particularly the diaphragm, has been demonstrated to exert systemic effects on the body, impacting cardiovascular and performance outcomes. This study aimed to evaluate the influence of an inspiratory muscle fatigue protocol on respiratory muscle strength, functionality, and muscle oxygen saturation in older adults.
Methods
A double-blinded randomized controlled clinical trial was conducted on twenty-four older adults aged over 60 years, who were physically independent in terms of gait and transfers. Participants were randomly assigned to one of three groups: control, inspiratory muscle fatigue, or activation. Diaphragmatic ultrasonography, maximum inspiratory pressure, muscle oxygen saturation, and functionality were assessed at two time points: before intervention (T1) and immediately post-treatment (T2).
Results
The inspiratory muscle fatigue group showed lower scores for respiratory and functional variables after performing the diaphragmatic fatigue intervention than the activation and control group (p < 0.05), on the other hand, the activation group showed more positive values for functional and respiratory capacity variables after performing the inspiratory muscle activation training (p< 0.05).
Conclusions
Fatigue of the inspiratory musculature appears to negatively impact inspiratory muscle strength, peripheral muscle strength, muscular oxygenation, and functionality in older adults.
Trial registration: ClinicalTrials.gov ID: NCT06266013.
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2 weeks ago
Mohsen Khosravi,
Mohsen Khosravi
Institution: Department of Psychiatry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, IRAN
Email: dr_khosravi2016@yahoo.com
Domenico De Berardis,
Domenico De Berardis
Institution: Mental Health Center of Giulianova, Teramo, ITALY
Email: info@rnfinity.com
Sakineh Mazloom,
Sakineh Mazloom
Institution: Department of Nursing, Zahedan Branch, Islamic Azad University, Zahedan, IRAN
Email: info@rnfinity.com
Amir Adibi,
Amir Adibi
Institution: Department of Psychiatry, School of Medicine, Ilam University of Medical Sciences, Ilam, IRAN
Email: info@rnfinity.com
Negin Javan,
Negin Javan
Institution: Department of Psychology, Yadegar-e-Imam Khomeini (RAH), Shahre Rey Branch, Islamic Azad University, Tehran, IRAN
Email: info@rnfinity.com
Zahra Ghiasi,
Zahra Ghiasi
Institution: Department of Psychiatry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, IRAN
Email: info@rnfinity.com
Mohammad Nafeli,
Mohammad Nafeli
Institution: Department of Psychiatry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, IRAN
Email: info@rnfinity.com
Negar Rahmanian
Negar Rahmanian
Institution: Department of Psychiatry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, IRAN
Email: info@rnfinity.com
The malingered psychosis has increasingly occurred over the past few years due to the tendency towards care in the community and the closures of long-stay psychiatric institutions. Thus, it is required to identify malingered psychosis to reach accurate forensic assessments and inhibit misuse of rest...
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The malingered psychosis has increasingly occurred over the past few years due to the tendency towards care in the community and the closures of long-stay psychiatric institutions. Thus, it is required to identify malingered psychosis to reach accurate forensic assessments and inhibit misuse of restricted healthcare resources and miscarriages of justice. Despite the fact that some practical psychometric tools and strategies have been proposed for diagnosing true psychosis over the past decades, the differentiation between true psychosis and malingered psychosis is still sometimes challenging. Accordingly, it seems crucial to identify innovative and reliable diagnostic alternatives. Hence, the present article summarizes a collection of evidence that can be used by researchers to improve future assessment of oropharyngeal microbiome composition as a feasible diagnostic marker for true psychosis in a forensic psychiatric setting.
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1 year ago