Search results for "eyes"
showing 10 items of 125 documents
Data from: Predator mimicry, not conspicuousness, explains the efficacy of butterfly eyespots
2015
Large conspicuous eyespots on butterfly wings have been shown to deter predators. This has been traditionally explained by mimicry of vertebrate eyes, but recently the classic eye-mimicry hypothesis has been challenged. It is proposed that the conspicuousness of the eyespot, not mimicry, is what causes aversion due to sensory biases, neophobia or sensory overloads. We conducted an experiment to directly test whether the eye-mimicry or the conspicuousness hypothesis better explain eyespot efficacy. We used great tits (Parus major) as model predator, and tested their reaction towards animated images on a computer display. Birds were tested against images of butterflies without eyespots, with …
Soccer players have a better standing balance in nondominant one-legged stance
2010
Rosario Barone1, Filippo Macaluso2, Marcello Traina3,4, Vincenza Leonardi4,5, Felicia Farina1, Valentina Di Felice11Human Anatomy Section 'E. Luna', BioNeC, University of Palermo, Palermo, Italy; 2Department of Physiological Science, Stellenbosch University, Stellenbosch, South Africa; 3Department of Internal Medicine, Cardiovascular and Renal Diseases, 4Methods and Didactics of Motory Activities, DISMOT, 5Department of General Surgery, Emergency and Organ Transplants (GENURTO), University of Palermo, Palermo, Italy  Rosario Barone and Filippo Macaluso contributed equally to the workAbstract: The purpose of this study was to analyze the differences in standing balan…
Walking in Natural Environments as Geriatrician’s Recommendation for Fall Prevention: Preliminary Outcomes from the “Passiata Day” Model
2020
Background: The Geriatric Unit of the University of Palermo developed the “Passiata Day” model, a green exercise intervention consisting of a one-hour walk, once/week, in a city park. The purpose of this study was to assess body balance in older people who walked regularly compared to sedentary people. Methods: 106 older people (75 women and 31 men; mean age: 72.3 ± 8.2 years) without fall history were invited to participate voluntarily in this natural environment walking program. After six months, both the participants who had taken part regularly in the walk (i.e., the physical activity group (PAG; n = 72; 54 women and 18 men; mean age: 70.7 ± 7.2 years)), and wh…
Postural Adaptations in Preadolescent Karate Athletes Due to a One Week Karate Training Camp
2013
Abstract The aim of this study was to investigate the effect of an increasing number of training hours of specific highintensity karate training on postural sway in preadolescent karate athletes. Seventy-four karatekas were randomly assigned to 1 of 2 groups: Karate Group (KG=37): age 10.29±1.68 yrs; or Control Group (CG= 37): age 10.06±1.77 yrs. The KG performed two sessions per day for 1 week in total, while the CG performed only 3 sessions during the same period. The center-of-pressure length (COPL) and velocity (COPV) were recorded under four different experimental conditions: open eyes (EO), closed eyes (EC), open eyes monopodalic left (EOL), open eyes monopodalic right (EOR), pre as w…
Relationships Between Standing Balance and Symmetry Measurements in Patients Following Recent Strokes (≤3 Weeks) or Older Strokes (≥6 Months)
2004
Abstract Background and Purpose. The Functional Standing Balance (FSB) Scale was designed to obtain measurements of standing balance and to identify the problems typically faced by people with stroke. The purpose of this study was to investigate the validity of measurements obtained with the FSB Scale for use in the acute and chronic phases of stroke by comparing the measurements obtained with the FSB Scale with those obtained for postural sway and lateral symmetry by use of a force platform. Subjects and Methods. Measurements were obtained for 26 people with recent strokes (ie, strokes within 3 weeks of data collection) and for 28 people with long-standing strokes (ie, strokes of 6 months'…
The effect of conventional movement training and trampoline training on balance and gait in chronic hemiplegic patients
1991
The postural sway of subjects during standing both with their eyes open and closed together with maximum velocity of walking were analysed in six male chronic hemiplegic patients before, during and after an intensive movement training programme lasting 8 weeks. The movement training programme was carried out on the basis of Bobath's principles. Three of the subjects carried out their training on a trampoline, with the particular purpose of enhancing the stimulation of the mechanisms responsible for the control of balance. During the follow-up, maximal walking velocity remained at previous levels and no systematic changes were observed in the control of postural sway. Although the use of the…
Role of the tear film in the optical quality of the human eye.
2007
This paper reviews recent studies of the role of the tear film in the optical quality of the eye. Recent investigations focus on the dynamics of the tear film after a blink and its important role in the optical quality of the eye. The results in this review were used in an attempt to understand the optical and visual impact of tear-film breakup in normal eyes and dry eyes. It was noted that patients with dry-eye syndrome have large optical aberrations compared with those in normal eyes, which may be the cause of blurry vision associated with the syndrome. In addition, instillation of artificial tears reduces optical aberrations and thus improves the optical quality of vision in these patien…
Relevance of lactate level detection in migrane and fibromyalgia
2019
The aim of this study was to determine the blood lactate levels in healthy and pathological subjects, particularly with migraine and fibromyalgia. Moreover we investigated the possible correlation between lactate concentration, postural stability and balance disorders; the composition of the groups were: migraine (n = 25; age 49.7 +/- 12.5), fibromyalgia (n = 10; age 43.7 +/- 21.2), control group (n = 16 age 28.52 +/- 2.4). The results showed that patients with fibromyalgia (FG) had higher lactate levels compared to migraine (MG) and control group (CG) (mean +/- sd: FG = 1.78 +/- 0.9 mmol/L; MG = 1.45 +/- 1 mmol/L; CG = 0,85 +/- 0,07 mmol/L). The same situation was highlighted about the swa…
Edukacja techniczna wsparciem rozwoju małej motoryki uczniów w młodszym wieku szkolnym
2018
Sprawność manualna dziecka rozwija się w toku różnorodnych ćwiczeń i zadań ruchowych usprawniających pracę mięśni drobnych oraz koordynację oka i ręki. Od tego, jaki poziom osiągnie dziecko w tym zakresie, zależy, między innymi, przebieg procesu nauki pisania oraz wykonania wszelkich prac manualnych, jednym z zadań edukacji technicznej w przedszkolu, a także w kształceniu wczesnoszkolnym jest rozwijanie motoryki niezbędnej do prawidłowego funkcjonowania dziecka w szkole i w życiu. Proces dochodzenia do biegłości w wykonywaniu precyzyjnych ruchów jest długotrwały i uwarunkowany zarówno cechami indywidualnymi, jak też przebiegiem i intensywnością ćwiczeń w tym zakresie. Przedmiotem poniższego…
Bloque de constitucionalidad en el Perú: el momento para su redefinición
2020
El bloque de constitucionalidad corresponde al conjunto de normas y principios que, sin formar parte del texto constitucional, comparten su misma jerarquía y obran como criterios para enjuiciar la constitucionalidad de las leyes. La noción es de origen francés y, conforme ha sido creada, es solo para los franceses. Su desarrollo ha logrado resultados favorables en su país. Sin embargo, luego fue adaptada en España, con una realidad diferente resultando una noción multiforme y confusa. Posteriormente fue trasladad a países latinoamericanos adquiriendo en su arraigo características propias; pero su aplicación en el Perú ha tenido resultados similares al caso español. El estudio pretende, desd…