Effect of aging on the marginal fit of milled and printed zirconia crowns: an in-vitro study.

Background: The additive manufacturing is one of the promising methods for fabrication of zirconia based restorations: However, studies on the marginal fit of zirconia restorations fabricated with this technique are sparse. This in vitro study was to measure and compare the marginal fit of milled and printed zirconia based crowns.

Methods: Twenty-two human premolars were prepared to receive zirconia crowns.

A Modified ResNeXt for Android Malware Identification and Classification.

It is critical to successfully identify, mitigate, and fight against Android malware assaults, since Android malware has long been a significant threat to the security of Android applications. Identifying and categorizing dangerous applications into categories that are similar to one another are especially important in the development of a safe Android app ecosystem. The categorization of malware families may be used to improve the efficiency of the malware detection process as well as to systematically identify malicious trends.

Effects of posture and ergometer-specific exercise modality on plasma viscosity and plasma fibrinogen: the role of plasma volume changes.

The aim of the present study was ascertain the effects posture and exercise modality on the main determinants of blood rheology. Thirteen subjects performed two exercise trials, in random order, at approximately 70% VO(2) max for 45-min. One trial was performed on a motorized treadmill at an intensity corresponding to 70% VO(2) max, while the other was performed on a stationary pike at an intensity corresponding to 70% VO(2) max.

Does ambient temperature affect exercise-induced changes in the main determinants of blood rheology?

To ascertain the effects of environmental temperature on blood rheology, ten subjects performed two exercise trials, in random order, at approximately 60% VO(2) max for 45-min. One trial was conducted in thermoneutral environment (20 ± 1°C), while the other was performed in hot dry condition (36 ± 1°C). Venous blood was removed at rest; following exercise and recovery.

Effects of time of day and acute resistance exercise on platelet activation and function.

The present study was designed to ascertain the interaction between time of day and resistance exercise on platelet activation and function. Ten healthy male subjects (age, 29.3 +/- 4.

Aerobic power and the main determinants of blood rheology: is there a relationship?

This cross-sectional study aimed to explore the relationship between aerobic power and the main determinants of blood rheology namely plasma viscosity, plasma fibrinogen concentration and haematocrit. Ninety-three normal healthy individuals (VO2max 48.3 ml/kg per min), who were familiarized with the laboratory environment and testing procedures, participated in the study.

Bone health in men: influencing factors.

Objective: To describe osteoporosis health beliefs, osteoporosis risk factors, and lifestyle habits that affect bone health in men.

Methods: Data were collected from 272 men using the Bone Health in Men questionnaire.

Results: The majority of participants reported that they were unlikely to develop osteoporosis, that osteoporosis in men is less serious than in women, and that osteoporosis is preventable.

Physical fitness indices and anthropometrics profiles in schoolchildren with sickle cell trait/disease.

The current studies aimed at determining physical fitness indices and anthropometrics profiles of school children with sickle cell trait (SCT) and sickle cell disease (SCD). Male school children (150) comprising 3 Groups participated in the studies. Group 1 has 50 normal healthy controls, while Groups 2 and 3 each has 50 children who were suffering from SCT and SCD, respectively.

Effects of water intake on the responses of haemorheological variables to resistance exercise.

To examine the effects of drinking an amount of water equal to weight loss on the responses of blood rheological variables, eleven healthy male subjects performed three resistance exercise trials. The aim of the first session was to determine the amount of weight loss following a resistance exercise trial at 80% of one repletion maximum (1RM). In the second and third sessions subjects performed the same resistance exercise protocol without and with drinking an amount of water equal to that recorded for body weight loss.

Responses of platelet activation and function to a single bout of resistance exercise and recovery.

The present study was designed to investigate the effects of resistance exercise and recovery on platelet activation and function. Twenty one healthy male subjects (27.9 +/- 4.

Haemorheology in exercise and training.

Disruption of the normal rheological properties of blood is considered an independent risk factor for cardiovascular disease and plays a significant role in the aetiology of atherothrombogenesis. The acute increase in whole blood viscosity may unfavourably affect the microcirculatory blood flow and oxygen delivery to the tissues. It is universally accepted that exercise and physical activity performed on a regular basis has health benefits.

The acute effects of resistance exercise on the main determinants of blood rheology.

The aim of this study was to examine short-term changes in blood rheological variables after a single bout of resistance exercise. Twenty-one healthy males completed three sets of 5 - 7 repetitions of six exercises at an intensity corresponding to 80% of one-repetition maximum (1-RM). The average duration of the exercise bout was 35 min.

Interaction between alcohol and exercise: physiological and haematological implications.

Alcohol use, particularly excessive alcohol consumption is one of the most serious health risks in the world. A relationship between sport, exercise and alcohol consumption is clear and long-standing. Alcohol continues to be the most frequently consumed drug among athletes and habitual exercisers and alcohol-related problems appear to be more common in these individuals.

Aggregation and activation of blood platelets in exercise and training.

This article presents an overview of the progress that has been made in recent years in our understanding of the interaction between exercise and platelets in health and disease. Although platelets are important in normal haemostasis, recent evidence emphasises the pivotal role of abnormal platelet function in acute coronary artery diseases, myocardial infarction, unstable angina and stroke. In light of the positive health benefits of exercise, interest has been heightened on the association between exercise and platelet aggregation and function, not only in normal healthy subjects but also in patients.

The effects of arm cranking exercise and training on platelet aggregation in male spinal cord individuals.

Platelet aggregation at rest and in responses to exercise and training were compared between spinal cord injured (SCI) individuals (N=5) and able-bodied subjects (N=7). All participants performed arm cranking exercise at 60-65% VO(2peak) for 30 min. Venous blood samples were obtained before and after sub-maximal exercise and measured for platelet aggregation using ADP and collagen.

Exercise and training effects on blood haemostasis in health and disease: an update.

In recent years, the dysfunction of the haemostatic system in relation to the clinical complications from arterioscleroses and cardiovascular diseases has become more recognised. Blood coagulation and fibrinolysis comprise two important physiological systems, which are regulated by a balance between activators and inhibitors. Activation of blood coagulation is associated with accelerated clot formation, whereas activation of blood fibrinolysis enhances the breakdown of the blood clot.

The effects of graded resistance exercise on platelet aggregation and activation.

Purpose: The purpose of this study was to examine the effects of resistance exercise with varying intensity but with similar volume on platelet aggregation and activation.

Methods: Thirteen healthy male subjects randomly completed three resistance exercise test trials at an intensity corresponding to 40%, 60%, and 80% of one repetition maximum (1-RM) in which the subjects performed six exercises including upper- and lower-body parts. Venous blood samples were obtained before and immediately after each exercise trial and analyzed for platelet count (PLT), plateletcrit (PCT), mean platelet volume (MPV), platelet aggregation, and beta-thromboglobulin (B-TG).

Exercise and training effects on platelets in health and disease.

In recent years the involvement of platelets dysfunction in atherogenesis and in the clinical complications from atherosclerosis has become more recognised. Systemic platelet-related thrombogenic factors have been shown to be involved in the initiation and progression of atherogenesis and plaque growth. Over the last two decades, interest has been heightened regarding the changes in platelet aggregation and functions that are associated with exercise in normal subjects and also patients, particularly those suffering from coronary artery disease.

Effects of alcohol ingestion post-exercise on platelet aggregation.

The present study examined the influence of ingesting a moderate dose of alcohol on platelet count and platelet aggregation during recovery following exercise. Nineteen subjects (11 male and 8 female) were studied immediately after a standardised cycle ergometer test and during the 24-h period of recovery. In random order, alcohol (0.