Search results for "body posture"
showing 9 items of 19 documents
The effect of body posture on long range time-to-contact estimation
2011
On Earth, gravity accelerates freely moving objects downward, whereas upward-moving objects are being decelerated. Do humans take internalised knowledge of gravity into account when estimating time-to-contact (TTC, the time remaining before the moving object reaches the observer)? To answer this question, we created a motion-prediction task in which participants saw the initial part of an object's trajectory moving on a collision course prior to an occlusion. Observers had to judge when the object would make contact with them. The visual scene was presented with a head-mounted display. Participants lay either supine (looking up) or prone (looking down), suggestive of the ball either rising…
The Relationship Between the Stomatognathic System and Body Posture
2009
In recent years, many researchers have investigated the various factors that can influence body posture: mood states, anxiety, head and neck positions, oral functions (respiration, swallowing), oculomotor and visual systems, and the inner ear. Recent studies indicate a role for trigeminal afferents on body posture, but this has not yet been demonstrated conclusively. The present study aims to review the papers that have shown a relationship between the stomatognathic system and body posture. These studies suggest that tension in the stomatognathic system can contribute to impaired neural control of posture. Numerous anatomical connections between the stomatognathic system’s proprioceptive i…
Benefits of Yoga practice on body posture and on psychological and cognitive functions in children aged 8-10 years
Background. Many authors have reported benefits related to yoga practice. In particular, the scientific literature showed the influences of yoga on physical performance and cognitive functions. However, only few researches have examined the role of this training practice in children. For this reason, the purpose of the present study was to investigate the effects on body posture and features as self-esteem and attention in children aged 8-10 years. Materials and method. Sixty-five subjects (male n=28, female n=37) aged 8-10 years and attending primary school were enrolled for the study and randomly assigned into an experimental group (EG) which included 28 participants and a control group (…
Embodied effects of posture: Changing emotional and cognitive processes through the body
2018
La cognición y emoción encarnada es un concepto que está revitalizando el interés por estudiar el papel del cuerpo en el procesamiento de información. Este concepto puede definirse como un efecto donde el cuerpo, su estado sensoriomotor, su morfología o su representación mental juega un papel fundamental en la configuración de los procesos cognitivos y emocionales. El cuerpo y sus procesos implicados han recibido escasa atención dentro de las teorías del procesamiento cognitivo que han predominado en las últimas décadas. No obstante, en los últimos años se ha producido un cambio en la forma de entender el procesamiento de la información, ya que la evidencia empírica señala que el cuerpo eje…
The deltoid muscle: an electromyographical analysis of its activity in arm abduction in various body postures
1992
We have carried out an electromyographical examination of the activity of five different regions of the deltoid muscle during abduction/adduction in various body postures with different biomechanical actions of arm gravity. The results show that the deltoid action is highly differentiated in its different regions and is not restricted only to the generation of an abducting moment in the shoulder joint. There is obviously a biomechanical contribution, mainly by its spinal and clavicular regions, to the stabilization of the glenohumeral joint and to the control of the selected plane of abduction.
Narcoleptic and schizophrenic hallucinations
2002
The differential diagnosis of narcolepsy versus schizophrenia is sometimes complicated by similar phenomenology, particularly when hallucinations predominate. REM sleep disturbances seem fundamental in the pathophysiology of narcolepsy, and REM sleep intrusions during periods of wakefulness are often associated with hallucinations also in healthy controls and in patients with other brain disorders including schizophrenia. This study used a semistructured interview to investigate different aspects of hallucinations (frequency, modality, content, and dependence on body posture) in 148 patients with narcolepsy, 21 patients with acute exacerbation of a schizophrenic disorder, and 128 healthy su…
Comparison of Postural Features and Muscle Strength between Children with Idiopathic Short Stature and Healthy Peers in Relation to Physical Exercise
2020
Previous research has reported that children with idiopathic short stature (ISS) showed functional and cognitive impairments. The purpose of this study was to compare muscle strength and body posture between children with ISS treated with growth hormone (GH) and healthy peers (healthy children, HC), and to analyze whether these parameters were affected by physical exercise. Eighteen children for the ISS group (mean age: 10.96 ± 1.68 years) and 26 children for the HC group (mean age: 10.19 ± 1.06 years) were recruited for the study. All participants performed the following assessments: handgrip and Sargent test for the muscle strength evaluation; baropodometric and stabilometric test for the…
Slow 0.1 Hz Breathing and Body Posture Induced Perturbations of RRI and Respiratory Signal Complexity and Cardiorespiratory Coupling
2020
Objective: We explored the physiological background of the non-linear operating mode of cardiorespiratory oscillators as the fundamental question of cardiorespiratory homeodynamics and as a prerequisite for the understanding of neurocardiovascular diseases. We investigated 20 healthy human subjects for changes using electrocardiac RR interval (RRI) and respiratory signal (Resp) Detrended Fluctuation Analysis (DFA, α1RRI, α2RRI, α1Resp, α2Resp), Multiple Scaling Entropy (MSERRI1−4, MSERRI5−10, MSEResp1−4, MSEResp5−10), spectral coherence (CohRRI−Resp), cross DFA (ρ1 and ρ2) and cross MSE (XMSE1−4 and XMSE5−10) indices in four physiological conditions: supine with spontaneous breathing, stand…
The role of school physical education on adolescents' fitness levels during the pandemic period from COVID-19: An observational study of the Italian …
2022
ObjectivesIn Italy, in 2013, a new school curriculum with a sport character was established in high schools, called Sports High School (SHS). The aims of this study were: (1) to assess the fitness levels of SHS students who, respecting all the safety rules to limit the spread of COVID-19, practiced physical education (PE) at school with continuity for almost all of 2021, and to compare them with Traditional High School (THS) students; (2) to evaluate as the SHS may have influenced the fitness levels in adolescents.MethodsThis is a case-control study in which thirty participants were enrolled (SHS: n = 15; THS: n = 15). To assess the fitness levels, the following tests were administered: the…