scholarly journals Sex differences in how territory quality affects aggression in convict cichlids

2021 ◽  
Author(s):  
J M Leese ◽  
T Blatt
Keyword(s):  
High Intensity ◽  
Nest Site ◽  
Aggressive Behaviors ◽  
Territory Quality ◽  
Territorial Aggression ◽  
Low Intensity ◽  
High Resource ◽  
Convict Cichlids ◽  
Two Measures ◽  
Time And Energy

Abstract In animal contests, the value an individual assigns to limited resources can directly impact the level of aggression they demonstrate. For territorial species, individuals often assess their territory quality and appropriately modify the time and energy invested in its defense. In this study, male and female convict cichlids, Amatitlania nigrofasciata, were acclimated to one of three territorial treatments representing either a Low, Medium, or High resource value. Territories with a “Low Value” included substrate alone, “Medium Value” territories included substrate and a nest site, and a “High Value” territory included substrate, a nest site, and constant food source. After three days of acclimation, a size-matched intruder was introduced to elicit territorial aggression and behaviors were observed. Territory quality affected one measure of low-intensity aggression (displays) in residents but had no effect on high-intensity aggression (bites and chases). Moreover, there was a significant effect of sex, with males and females differing in the types of aggressive behaviors demonstrated across all treatments. Females showed more low-intensity aggressive behaviors toward intruders than males did. Additionally, a significant interaction of sex and territory quality was observed on two measures of high-intensity aggressive behavior (bites and chases), with females more likely than males to increase aggressive behaviors along with increasing territory quality. This suggests that females may be more sensitive and/or responsive to changes in the quality of a territory, possibly due to the necessity of a suitable nest site for egg deposition within a territory.

Inhibition rather than Enhancement of Hemostatic System Activation during Initiation of Oral Anticoagulant Treatment

1997 ◽  
Vol 77 (04) ◽  
pp. 685-689 ◽  
Author(s):  
Paul A Kyrle ◽  
Johannes Brockmeier ◽  
Ansgar Weltermann ◽  
Sabine Eichinger ◽  
Wolfgang Speiser ◽  
...  
Keyword(s):  
High Intensity ◽  
Oral Anticoagulant ◽  
Protein C ◽  
Venous Blood ◽  
Rapid Decline ◽  
Oral Anticoagulant Treatment ◽  
Shed Blood ◽  
Low Intensity ◽  
Hemostatic System ◽  
System Activation

SummaryCoumarin-induced skin necrosis is believed to be due to a transient hypercoagulable state resulting from a more rapid decline of the protein C activity relative to that of coagulation factors (F) II, IX and X during initiation of oral anticoagulant therapy. We studied hemostatic system activation during early oral anticoagulant treatment with a technique that investigates coagulation activation in the microcirculation.We determined in 10 healthy volunteers the concentrations of prothrombin fragment F1+2 (f1.2) and thrombin-antithrombin complex (TAT) in blood emerging from an injury of the microvasculature (bleeding time incision) before and after initiation of both high-inten- sity and low-intensity coumarin therapy. In addition, f1.2, TAT, activated F VII (F Vila) and the activities of FII, F VII, F X and protein C were measured in venous blood.A rapid decline of F VII and protein C was observed in venous blood with activities at 24 h of 7 ± 1% and 43 ± 2%, respectively, during the high-intensity regimen. A 20 to 30% reduction of f1.2 and TAT was seen in venous blood at 72 h with no major difference between the high- and the low-intensity regimen. F Vila levels were substantially affected by anticoagulation with a >90% reduction at 48 h during the high-intensity regimen. Following high-intensity coumarin, a >50% decrease in the fl.2 and TAT levels was found in shed blood at 48 h suggesting substantial inhibition of thrombin generation during early oral anticoagulation. An increase in the f1.2 and TAT levels was seen neither in shed blood nor in venous blood.Our data do not support the concept of a transient imbalance between generation and inhibition of thrombin as the underlying pathomechanism of coumarin-induced skin nekrosis.

Contralateral training effects of low-intensity blood-flow restricted and high-intensity unilateral resistance training

2021 ◽  
Author(s):  
Goncalo V. Mendonca ◽  
Carolina Vila-Chã ◽  
Carolina Teodósio ◽  
André D. Goncalves ◽  
Sandro R. Freitas ◽  
...  
Keyword(s):  
Blood Flow ◽  
Resistance Training ◽  
High Intensity ◽  
Training Effects ◽  
Low Intensity

scholarly journals Comparison of two different models of rehabilitation programs following total knee replacement operations

2020 ◽  
Vol 47 (1) ◽  
Author(s):  
Rabab S. Zaghlol ◽  
Sahar S. Khalil ◽  
Ahmed M. Attia ◽  
Ghada A. Dawa
Keyword(s):  
Total Knee Replacement ◽  
Knee Replacement ◽  
High Intensity ◽  
Rating Scale ◽  
Rehabilitation Program ◽  
Low Intensity ◽  
Rehabilitation Programs ◽  
Patient Reported ◽  
Total Knee ◽  
Functional Gain

Abstract Background Total knee replacement operation (TKR) is the treatment of choice in severe knee osteoarthritis (OA). Rehabilitation post-TKR is still not well studied. The aim of this study was to compare between the high-intensity (HI) rehabilitation program and the low-intensity (LI) rehabilitation program following TKR. Results At 1 month following the TKR operations, significant improvements were found in the first group compared to the second group in all the measured parameters except for the knee range of motion (ROM). At 3 and 12 months follow-up periods, there were statistically significant differences between both groups in all the evaluated parameters except for the numeric pain rating scale and the knee ROM. Conclusions Both high-intensity and low-intensity rehabilitation programs are effective; however, HI program had superior functional gain and patient-reported outcomes compared to the LI program. Moreover, HI group has a long-term functional gain.

Concentration of roselle (Hibiscus sabdariffa L) and sucrose in beverages: Effects on physicochemical characteristics and acceptance

2020 ◽  
pp. 108201322097379
Author(s):  
Jahir Antonio Barajas-Ramírez ◽  
Ana Luisa Gutiérrez-Salomón ◽  
Sonia Guadalupe Sáyago-Ayerdi
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
High Intensity ◽  
Physicochemical Characteristics ◽  
Hibiscus Sabdariffa ◽  
Color Parameters ◽  
Low Intensity ◽  
Red Color

The calyces of roselle ( Hibiscus sabdariffa L.) are used to make a refreshing drink with high content of anthocyanins and other phenolic compounds, although the process for obtaining the beverage is not standardized. In this research it was determined physicochemical characteristics, total soluble polyphenols content, antioxidant activity and acceptance for beverages prepared by decoction at four concentrations of calyces in water (1.0, 2.5, 5.0 and 10.0%) and two concentrations of sucrose (11 and 16%). Color parameters in beverages permitted to describe them as red, which turned darker as the content of hibiscus increased. Total soluble polyphenols content and antioxidant activity were directly correlated with content of calyces in beverages and inversely correlated with pH, which means that beverages with higher content of calyces could be perceived as more acidic and more intense in characteristics associated with hibiscus presence, such as acid, astringent and the presence of intense dark red color, although the higher concentration of sucrose might have contributed to mask slightly the sourness and astringency. Acceptance for hibiscus beverages allowed to observe two segments of consumers, high-intensity and low-intensity likers but both confluence in overall liking values for beverages prepared with 2.5% calyces and 16% sucrose.

scholarly journals Competences Required for the Delivery of High and Low-Intensity Cognitive Behavioural Interventions for Chronic Fatigue, Chronic Fatigue Syndrome/ME and Irritable Bowel Syndrome

2014 ◽  
Vol 42 (6) ◽  
pp. 760-764 ◽  
Author(s):  
Katharine A. Rimes ◽  
Janet Wingrove ◽  
Rona Moss-Morris ◽  
Trudie Chalder
Keyword(s):  
Irritable Bowel Syndrome ◽  
Chronic Fatigue Syndrome ◽  
High Intensity ◽  
Chronic Fatigue ◽  
Behavioural Interventions ◽  
Low Intensity ◽  
Fatigue Syndrome ◽  
Cognitive Behavioural ◽  
Irritable Bowel ◽  
Cognitive Behavioural Interventions

Background: Cognitive behavioural interventions are effective in the treatment of chronic fatigue, chronic fatigue syndrome (sometimes known as ME or CFS/ME) and irritable bowel syndrome (IBS). Such interventions are increasingly being provided not only in specialist settings but in primary care settings such as Improving Access to Psychological Therapies (IAPT) services. There are no existing competences for the delivery of “low-intensity” or “high-intensity” cognitive behavioural interventions for these conditions. Aims: To develop “high-intensity” and “low-intensity” competences for cognitive behavioural interventions for chronic fatigue, CFS/ME and IBS. Method: The initial draft drew on a variety of sources including treatment manuals and other information from randomized controlled trials. Therapists with experience in providing cognitive behavioural interventions for CF, CFS/ME and IBS in research and clinical settings were consulted on the initial draft competences and their suggestions for minor amendments were incorporated into the final versions. Results: Feedback from experienced therapists was positive. Therapists providing low intensity interventions reported that the competences were also helpful in highlighting training needs. Conclusions: These sets of competences should facilitate the training and supervision of therapists providing cognitive behavioural interventions for chronic fatigue, CFS/ME and IBS. The competences are available online (see table of contents for this issue: http://journals.cambridge.org/jid_BCP) or on request from the first author.

scholarly journals Service Use, Drop-Out Rate and Clinical Outcomes: A Comparison Between High and Low Intensity Treatments in an IAPT Service

2014 ◽  
Vol 42 (6) ◽  
pp. 747-759 ◽  
Author(s):  
Stella W. Y. Chan ◽  
Malcolm Adams
Keyword(s):  
Clinical Outcomes ◽  
High Intensity ◽  
Recovery Rate ◽  
Service Use ◽  
Evaluation Study ◽  
Drop Out ◽  
Stepped Care ◽  
Depression And Anxiety ◽  
Low Intensity ◽  
Drop Out Rate

Background: The IAPT services provide high and low intensity psychological treatments for adults suffering from depression and anxiety disorders using a stepped care model. The latest national evaluation study reported an average recovery rate of 42%. However, this figure varied widely between services, with better outcomes associated with higher “step-up” rates between low and high intensity treatments. Aims: This study aimed to compare the two intensity groups in an IAPT service in Suffolk. Method: This study adopted a between groups design. A sample of 100 service users was randomly selected from the data collected from an IAPT service in Suffolk between May 2008 and February 2011. The treatment outcomes, drop-out rate, and other characteristics were compared between those who received high and low intensity treatments. Results: The high intensity group received, on average, more sessions and contact time. They received more CBT sessions and less guided self-help. There were no group differences in terms of the drop-out and appointment cancellation rates. Analyses on clinical outcomes suggested no group difference but demonstrated an overall recovery rate of 52.6% and significant reduction in both depression and anxiety symptoms. Conclusions: Despite methodological limitations, this study concludes that the service as a whole achieved above-average clinical outcomes. Further research building upon the current study in unpacking the relative strengths and weaknesses for the high and low intensity treatments would be beneficial for service delivery.

scholarly journals Therapist Characteristics and their Effect on Training Outcomes: What Counts?

2015 ◽  
Vol 43 (3) ◽  
pp. 374-380 ◽  
Author(s):  
Amanda Branson ◽  
Roz Shafran
Keyword(s):  
High Intensity ◽  
Clinical Performance ◽  
Clinical Skill ◽  
Individual Characteristics ◽  
Therapist Characteristics ◽  
Training Outcomes ◽  
Low Intensity ◽  
Cognitive Behavioural ◽  
The Impact ◽  
And Training

Background:Evidence exists for a relationship between individual characteristics and both job and training performance; however relationships may not be generalizable. Little is known about the impact of therapist characteristics on performance in postgraduate therapist training programmes.Aims:The aim of this study was to investigate associations between the grades of trainee Low-Intensity and High-Intensity cognitive behavioural therapists and individual characteristics.Method:Trainee Low-Intensity (n= 81) and High-Intensity (n= 59) therapists completed measures of personality and cognitive ability; demographic and course grade data for participants were collected.Results:Degree classification emerged as the only variable to be significantly associated with performance across assessments and courses. Higher undergraduate degree classifications were associated with superior academic and clinical performance. Agreeableness was the only dimension of personality to be associated (positively) with clinical skill. Age was weakly and negatively associated with performance.Conclusions:Relationships between individual characteristics and training outcomes are complex and may be context specific. These results could have important implications for the selection and development of therapists for Low or High-Intensity cognitive behavioural therapy (CBT) training.

scholarly journals A comparison of low intensity UV-C and high intensity pulsed polychromatic sources as elicitors of hormesis in tomato fruit

2017 ◽  
Vol 125 ◽  
pp. 52-58 ◽  
Author(s):  
G. Scott ◽  
M. Rupar ◽  
A.G.D. Fletcher ◽  
M. Dickinson ◽  
G. Shama
Keyword(s):  
High Intensity ◽  
Tomato Fruit ◽  
Low Intensity ◽  
Uv C

Phenylephrine decreases frontal lobe oxygenation at rest but not during moderately intense exercise

2010 ◽  
Vol 108 (6) ◽  
pp. 1472-1478 ◽  
Author(s):  
Patrice Brassard ◽  
Thomas Seifert ◽  
Mads Wissenberg ◽  
Peter M. Jensen ◽  
Christian K. Hansen ◽  
...  
Keyword(s):  
Frontal Lobe ◽  
High Intensity ◽  
Sympathetic Activity ◽  
Near Infrared ◽  
Cerebral Metabolism ◽  
High Intensity Exercise ◽  
Mean Flow ◽  
Intense Exercise ◽  
Low Intensity ◽  
Low Intensity Exercise

Whether sympathetic activity influences cerebral blood flow (CBF) and oxygenation remains controversial. The influence of sympathetic activity on CBF and oxygenation was evaluated by the effect of phenylephrine on middle cerebral artery (MCA) mean flow velocity ( Vmean) and the near-infrared spectroscopy-derived frontal lobe oxygenation (ScO2) at rest and during exercise. At rest, nine healthy male subjects received bolus injections of phenylephrine (0.1, 0.25, and 0.4 mg), and changes in mean arterial pressure (MAP), MCA Vmean, internal jugular venous O2 saturation (SjvO2), ScO2, and arterial Pco2 (PaCO2) were measured and the cerebral metabolic rate for O2 (CMRO2) was calculated. In randomized order, a bolus of saline or 0.3 mg of phenylephrine was then injected during semisupine cycling, eliciting a low (∼110 beats/min) or a high (∼150 beats/min) heart rate. At rest, MAP and MCA Vmean increased ∼20% ( P < 0.001) and ∼10% ( P < 0.001 for 0.25 mg of phenylephrine and P < 0.05 for 0.4 mg of phenylephrine), respectively. ScO2 then decreased ∼7% ( P < 0.001). Phenylephrine had no effect on SjvO2, PaCO2, or CMRO2. MAP increased after the administration of phenylephrine during low-intensity exercise (∼15%), but this was attenuated (∼10%) during high-intensity exercise ( P < 0.001). The reduction in ScO2 after administration of phenylephrine was attenuated during low-intensity exercise (−5%, P < 0.001) and abolished during high-intensity exercise (−3%, P = not significant), where PaCO2 decreased 7% ( P < 0.05) and CMRO2 increased 17% ( P < 0.05). These results suggest that the administration of phenylephrine reduced ScO2 but that the increased cerebral metabolism needed for moderately intense exercise eliminated that effect.

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