Records |
Author |
Baudry, L.; Leroy, D.; Chollet, D. |
Title |
The effect of combined self- and expert-modelling on the performance of the double leg circle on the pommel horse |
Type |
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Year |
2006 |
Publication |
Journal of Sports Sciences |
Abbreviated Journal |
J Sports Sci |
Volume |
24 |
Issue |
10 |
Pages |
1055-1063 |
Keywords |
Adolescent; Analysis of Variance; Child; *Expert Testimony; Feedback; Gymnastics/*physiology; Humans; *Leg/physiology; Movement/physiology; Physical Education and Training; Posture/physiology; Range of Motion, Articular/physiology; Retention (Psychology); *Video Recording |
Abstract |
In this study, we investigated whether video modelling can enhance gymnasts' performance of the circle on a pommel horse. The procedure associated expert-modelling with self-modelling and quantitative performance analysis. Sixteen gymnasts were randomly assigned to one of two groups: (1) a modelling group, which received expert- and self-modelling, and performance feedback, or (2) a control group, which received no feedback. After five sessions of training, an analysis of variance with repeated measures indicated that the gains in the back, entry, front, and exit phases of the circle were greater for the modelling group than for the control group. During the training sessions, the gymnasts in the modelling group improved their body segmental alignment during the back phase more quickly than during the other phases. As predicted, although both groups performed the same number of circles (300 in 5 days, with 10 sequences of 6 circles), the modelling group improved their body segmental alignment more than the control group. It thus appears that immediate video modelling can help to correct complex sports movements such as the circle performed on the pommel horse. However, its effectiveness seemed to be dependent on the complexity of the phase. |
Address |
CETAPS Laboratory, UPRES EA 3832, Faculty of Sports Sciences, Rouen University, Mont-Saint Aignan, France. ludovic_baudry@yahoo.fr |
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0264-0414 |
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PMID:17115520 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
4026 |
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Author |
Keay, J.M.; Singh, J.; Gaunt, M.C.; Kaur, T. |
Title |
Fecal glucocorticoids and their metabolites as indicators of stress in various mammalian species: a literature review |
Type |
Journal Article |
Year |
2006 |
Publication |
Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians |
Abbreviated Journal |
J Zoo Wildl Med |
Volume |
37 |
Issue |
3 |
Pages |
234-244 |
Keywords |
Animals; *Animals, Wild/metabolism; Chromatography, High Pressure Liquid/methods/veterinary; Circadian Rhythm; Conservation of Natural Resources; *Ecosystem; Feces/*chemistry; Glucocorticoids/*analysis/metabolism; Humans; Seasons; Species Specificity; Specimen Handling/methods/veterinary; Stress, Psychological/*metabolism |
Abstract |
Conservation medicine is a discipline in which researchers and conservationists study and respond to the dynamic interplay between animals, humans, and the environment. From a wildlife perspective, animal species are encountering stressors from numerous sources. With the rapidly increasing human population, a corresponding increased demand for food, fuel, and shelter; habitat destruction; and increased competition for natural resources, the health and well-being of wild animal populations is increasingly at risk of disease and endangerment. Scientific data are needed to measure the impact that human encroachment is having on wildlife. Nonbiased biometric data provide a means to measure the amount of stress being imposed on animals from humans, the environment, and other animals. The stress response in animals functions via glucocorticoid metabolism and is regulated by the hypothalamic-pituitary-adrenal axis. Fecal glucocorticoids, in particular, may be an extremely useful biometric test, since sample collection is noninvasive to subjects and, therefore, does not introduce other variables that may alter assay results. For this reason, many researchers and conservationists have begun to use fecal glucocorticoids as a means to measure stress in various animal species. This review article summarizes the literature on many studies in which fecal glucocorticoids and their metabolites have been used to assess stress levels in various mammalian species. Variations between studies are the main focus of this review. Collection methods, storage conditions, shipping procedures, and laboratory techniques utilized by different researchers are discussed. |
Address |
Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, 0442 Duck Pond Drive, Blacksburg, Virginia 24061, USA |
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1042-7260 |
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PMID:17319120 |
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no |
Call Number |
refbase @ user @ |
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616 |
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Author |
Hostetter, A.B.; Cantero, M.; Hopkins, W.D. |
Title |
Differential use of vocal and gestural communication by chimpanzees (Pan troglodytes) in response to the attentional status of a human (Homo sapiens) |
Type |
Journal Article |
Year |
2001 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
J. Comp. Psychol. |
Volume |
115 |
Issue |
4 |
Pages |
337-343 |
Keywords |
Animals; *Attention; *Communication Methods, Total; Female; *Gestures; Humans; Male; Motivation; Pan troglodytes/*psychology; Social Environment; Species Specificity; *Vocalization, Animal |
Abstract |
This study examined the communicative behavior of 49 captive chimpanzees (Pan troglodytes), particularly their use of vocalizations, manual gestures, and other auditory- or tactile-based behaviors as a means of gaining an inattentive audience's attention. A human (Homo sapiens) experimenter held a banana while oriented either toward or away from the chimpanzee. The chimpanzees' behavior was recorded for 60 s. Chimpanzees emitted vocalizations faster and were more likely to produce vocalizations as their 1st communicative behavior when a human was oriented away from them. Chimpanzees used manual gestures more frequently and faster when the human was oriented toward them. These results replicate the findings of earlier studies on chimpanzee gestural communication and provide new information about the intentional and functional use of their vocalizations. |
Address |
Department of Psychology, Berry College, USA |
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English |
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ISSN |
0735-7036 |
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Notes |
PMID:11824896 |
Approved |
yes |
Call Number |
Equine Behaviour @ team @ |
Serial |
4970 |
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Author |
Suzuki, Y.; Toquenaga, Y. |
Title |
Effects of information and group structure on evolution of altruism: analysis of two-score model by covariance and contextual analyses |
Type |
Journal Article |
Year |
2005 |
Publication |
Journal of theoretical biology |
Abbreviated Journal |
J. Theor. Biol. |
Volume |
232 |
Issue |
2 |
Pages |
191-201 |
Keywords |
*Altruism; Analysis of Variance; *Communication; Cooperative Behavior; *Evolution; Game Theory; *Group Structure; Humans; Models, Genetic; Models, Psychological; Selection (Genetics); Trust |
Abstract |
An altruistic individual has to gamble on cooperation to a stranger because it does not know whether the stranger is trustworthy before direct interaction. Nowak and Sigmund (Nature 393 (1998a) 573; J. Theor. Biol. 194 (1998b) 561) presented a new theoretical framework of indirect reciprocal altruism by image scoring game where all individuals are informed about a partner's behavior from its image score without direct interaction. Interestingly, in a simplified version of the image scoring game, the evolutionarily stability condition for altruism became a similar form of Hamilton's rule, i.e. inequality that the probability of getting correct information is more than the ratio of cost to benefit. Since the Hamilton's rule was derived by evolutionarily stable analysis, the evolutionary meaning of the probability of getting correct information has not been clearly examined in terms of kin and group selection. In this study, we applied covariance analysis to the two-score model for deriving the Hamilton's rule. We confirmed that the probability of getting correct information was proportional to the bias of altruistic interactions caused by using information about a partner's image score. The Hamilton's rule was dependent on the number of game bouts even though the information reduced the risk of cooperation to selfish one at the first encounter. In addition, we incorporated group structure to the two-score model to examine whether the probability of getting correct information affect selection for altruism by group selection. We calculated a Hamilton's rule of group selection by contextual analysis. Group selection is very effective when either the probability of getting correct information or that of future interaction, or both are low. The two Hamilton's rules derived by covariance and contextual analyses demonstrated the effects of information and group structure on the evolution of altruism. We inferred that information about a partner's behavior and group structure can produce flexible pathways for the evolution of altruism. |
Address |
Integrative Environmental Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1, Ten-Nou-Dai, Tsukuba, Ibaraki 305-8572, Japan. yukari@pe.ies.life.tsukuba.ac.jp |
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0022-5193 |
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Notes |
PMID:15530489 |
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no |
Call Number |
refbase @ user @ |
Serial |
556 |
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Author |
Hamilton, W.D. |
Title |
The genetical evolution of social behaviour. I |
Type |
Journal Article |
Year |
1964 |
Publication |
Journal of Theoretical Biology |
Abbreviated Journal |
J. Theor. Biol. |
Volume |
7 |
Issue |
1and 2 |
Pages |
1-52 |
Keywords |
*Behavior; *Genetics; Humans; *Models, Theoretical |
Abstract |
A genetical mathematical model is described which allows for interactions between relatives on one another's fitness. Making use of Wright's Coefficient of Relationship as the measure of the proportion of replica genes in a relative, a quantity is found which incorporates the maximizing property of Darwinian fitness. This quantity is named “inclusive fitness”. Species following the model should tend to evolve behaviour such that each organism appears to be attempting to maximize its inclusive fitness. This implies a limited restraint on selfish competitive behaviour and possibility of limited self-sacrifices.
Special cases of the model are used to show (a) that selection in the social situations newly covered tends to be slower than classical selection, (b) how in populations of rather non-dispersive organisms the model may apply to genes affecting dispersion, and (c) how it may apply approximately to competition between relatives, for example, within sibships. Some artificialities of the model are discussed. |
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0022-5193 |
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PMID:5875341 |
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no |
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Equine Behaviour @ team @ |
Serial |
5160 |
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Author |
Herder, S.L. |
Title |
More cardiac dressage: galop, gallop, gal(l)opitty glop |
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Journal Article |
Year |
1989 |
Publication |
JAMA : the Journal of the American Medical Association |
Abbreviated Journal |
Jama |
Volume |
262 |
Issue |
3 |
Pages |
352 |
Keywords |
Animals; Gait; *Heart Rate; Horses; Humans; Terminology; *Wit and Humor |
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0098-7484 |
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PMID:2739033 |
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no |
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Equine Behaviour @ team @ |
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3757 |
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Author |
Kiltie, R.A.; Fan, J.; Laine, A.F. |
Title |
A wavelet-based metric for visual texture discrimination with applications in evolutionary ecology |
Type |
Journal Article |
Year |
1995 |
Publication |
Mathematical Biosciences |
Abbreviated Journal |
Math Biosci |
Volume |
126 |
Issue |
1 |
Pages |
21-39 |
Keywords |
Animals; Carnivora; *Ecology; Equidae; *Evolution; Humans; Mathematics; Models, Biological; Moths; *Pattern Recognition, Visual; Pigmentation |
Abstract |
Much work on natural and sexual selection is concerned with the conspicuousness of visual patterns (textures) on animal and plant surfaces. Previous attempts by evolutionary biologists to quantify apparency of such textures have involved subjective estimates of conspicuousness or statistical analyses based on transect samples. We present a method based on wavelet analysis that avoids subjectivity and that uses more of the information in image textures than transects do. Like the human visual system for texture discrimination, and probably like that of other vertebrates, this method is based on localized analysis of orientation and frequency components of the patterns composing visual textures. As examples of the metric's utility, we present analyses of crypsis for tigers, zebras, and peppered moth morphs. |
Address |
Department of Zoology, University of Florida, Gainesville |
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0025-5564 |
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PMID:7696817 |
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no |
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Equine Behaviour @ team @ |
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2660 |
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Author |
Barker, S.C. |
Title |
The Australian paralysis tick may be the missing link in the transmission of Hendra virus from bats to horses to humans |
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Journal Article |
Year |
2003 |
Publication |
Medical Hypotheses |
Abbreviated Journal |
Med Hypotheses |
Volume |
60 |
Issue |
4 |
Pages |
481-483 |
Keywords |
Animals; Chiroptera; *Disease Transmission; Ecology; Hendra Virus/*pathogenicity; Horses; Humans; Models, Theoretical; Polymerase Chain Reaction; Ticks/*virology |
Abstract |
Hendra virus is a new virus of the family Paramyxoviridae. This virus was first detected in Queensland, Australia, in 1994; although, it seems that the virus has infected fruit-eating bats (flying-foxes) for a very long time. At least 2 humans and 15 horses have been killed by this virus since it first emerged as a virus that may infect mammals other than flying-foxes. Hendra virus is thought to have moved from flying-foxes to horses, and then from horses to people. There is a reasonably strong hypothesis for horse-to-human transmission: transmission of virus via nasal discharge, saliva and/or urine. In contrast, there is no strong hypothesis for flying-fox-to-human transmission. I present evidence that the Australian paralysis tick, Ixodes holocyclus, which has apparently only recently become a parasite of flying-foxes, may transmit Hendra virus and perhaps related viruses from flying-foxes to horses and other mammals. |
Address |
Department of Microbiology and Parisitology, Institute for Molecular Biosciences, ARC Special Research Center for Functional and Applied Genomics, The University of Queensland, Brisbane, Australia. s.barker@imb.uq.edu.au |
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0306-9877 |
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PMID:12615503 |
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no |
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Equine Behaviour @ team @ |
Serial |
2641 |
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Author |
Bentley, T.; Macky, K.; Edwards, J. |
Title |
Injuries to New Zealanders participating in adventure tourism and adventure sports: an analysis of Accident Compensation Corporation (ACC) claims |
Type |
Journal Article |
Year |
2006 |
Publication |
The New Zealand Medical Journal |
Abbreviated Journal |
N Z Med J |
Volume |
119 |
Issue |
1247 |
Pages |
U2359 |
Keywords |
Adolescent; Adult; Aged; Athletic Injuries/*economics/*epidemiology; Back Injuries/epidemiology; Bicycling/economics/injuries; Female; Humans; Insurance Claim Reporting/*statistics & numerical data; Insurance, Liability/*utilization; Male; Middle Aged; Mountaineering/economics/injuries; New Zealand/epidemiology; *Risk-Taking; Skiing/economics/injuries; Sprains and Strains/epidemiology |
Abstract |
AIMS: The aim of this study was to examine the involvement of adventure tourism and adventure sports activity in injury claims made to the Accident Compensation Corporation (ACC). METHODS: Epidemiological analysis of ACC claims for the period, July 2004 to June 2005, where adventure activities were involved in the injury. RESULTS: 18,697 adventure tourism and adventure sports injury claims were identified from the data, representing 28 activity sectors. Injuries were most common during the summer months, and were most frequently located in the major population centres. The majority of injuries were incurred by claimants in the 20-50 years age groups, although claimants over 50 years of age had highest claims costs. Males incurred 60% of all claims. Four activities (horse riding, mountain biking, tramping/hiking, and surfing) were responsible for approximately 60% of all adventure tourism and adventure sports-related injuries. Slips, trips, and falls were the most common injury initiating events, and injuries were most often to the back/spine, shoulder, and knee. CONCLUSIONS: These findings suggest the need to investigate whether regulatory intervention in the form of codes of practice for high injury count activities such as horse riding and mountain biking may be necessary. Health promotion messages and education programs should focus on these and other high-injury risk areas. Improved risk management practices are required for commercial adventure tourism and adventure sports operators in New Zealand if safety is to be improved across this sector. |
Address |
Department of Management and International Business Massey University, Auckland. T.A.Bentley@massey.ac.nz |
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1175-8716 |
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PMID:17195852 |
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no |
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1843 |
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Author |
Adolphs, R. |
Title |
Cognitive neuroscience of human social behaviour |
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Journal Article |
Year |
2003 |
Publication |
Nature Reviews. Neuroscience |
Abbreviated Journal |
Nat Rev Neurosci |
Volume |
4 |
Issue |
3 |
Pages |
165-178 |
Keywords |
Cognition; Emotions; Humans; Models, Psychological; *Social Behavior |
Abstract |
We are an intensely social species--it has been argued that our social nature defines what makes us human, what makes us conscious or what gave us our large brains. As a new field, the social brain sciences are probing the neural underpinnings of social behaviour and have produced a banquet of data that are both tantalizing and deeply puzzling. We are finding new links between emotion and reason, between action and perception, and between representations of other people and ourselves. No less important are the links that are also being established across disciplines to understand social behaviour, as neuroscientists, social psychologists, anthropologists, ethologists and philosophers forge new collaborations. |
Address |
Deparment of Neurology, University of Iowa, 200 Hawkins Drive, Iowa City, Iowa 52242, USA. ralph-adolphs@uiowa.edu |
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1471-003X |
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PMID:12612630 |
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no |
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Equine Behaviour @ team @ |
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4706 |
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