Raziye Gul Tiryaki-Sonmez

Lehman College | CUNY · Department of Health Sciences

We carried out a prospective case study in a high-level amateur natural male bodybuilder throughout preparation for 4 competitions and during the ensuing post-contest recovery period. Laboratory testing was conducted monthly over a 1-year period, which included the following assessments: B-mode ultrasound evaluation of muscle thickness (MT), multi-...

zet Bu araştırmanın amacı direnç antrenmanının obestatin hormonu düzeyine etkisini araştırmaktı. Çalışmaya gönüllü olarak katılan 18 aktif erkek rastgele yöntemle direnç antrenmanı grubu (n=9) ve kontrol grubu (n=9) olarak ikiye ayrılmıştır. Direnç antrenmanı grubu 8 haftalık direnç egzersizi antrenmanı programına katılırken kontrol grubu herhangi...

This study investigated the effects of 60 min acute exercise on energy regulating hormones. Eight healthy female subjects undertook three, 2 h trials in a randomized crossover design. In the exercise trials subjects ran for 60 min at 50% of maximal oxygen uptake and 50 min at 50% of maximal oxygen uptake and 10 min at 80% of maximal oxygen uptake f...

The aim of the study was to determine the degree of adiposity and the incidence of body mass disorders, including abdominal obesity, in healthy short children and children with growth hormone deficiency. The study included 134 short children (height < 10th percentile) aged 7-15. In this cohort there were 63 (31 boys and 32 girls) children without d...

OBJECTIVE: The purpose of this study was to compare activation of the upper body musculature during the barbell bench press at varying training intensities. METHODS: Twelve young, resistance-trained men performed sets of the bench press to momentary muscular failure with two different loads: a high-load (HIGH) set at 80% of 1RM and a low-load (LOW)...

The purpose of this case study was to describe the acute effects of contract-relax proprioceptive neuromuscular facilitation (CRPNF) and static stretching (SS) on hamstring flexibility, vertical jump performance and electromyography (EMG) of vastus lateralis (VL), vastus medialis (VM) and gastrocnemius (GAS) in two sedantary males. Each participant...

The purpose of this study was to compare body composition changes as measured by A-mode ultrasound (US) versus a criterion densitometry-based measure, air displacement plethysmography (ADP), over a 4-week weight-loss protocol in healthy, non-obese young women. Twenty healthy, young female volunteers were provided with customized dietary plans for t...

This study investigated the effects of different acute exercise mode on subjective hunger rating. Ten healthy woman subjects participated voluntarily in the study and written informed consent was obtained from all subjects before participation. Subjects undertook four, 1,5 h trials (3exercises and 1 control) in a randomized crossover design. In the...

This study investigates the effects of different acute exercise modes on appetite marker ratings. Twelve healthy male subjects participated voluntarily in the study and written informed consent was obtained from all subjects before participation. The subjects underwent four, 120 minute trials (exercise and control) in a randomized crossover design....

The purpose of this study was to investigate the effects of training muscle groups 1 day per week using a split-body routine versus 3 days per week using a total-body routine on muscular adaptations in well-trained men. Subjects were 20 male volunteers (height = 1.76 ± 0.05 m; body mass = 78.0 ± 10.7 kg; age = 23.5 ± 2.9 years) recruited from a uni...

The purpose of this study was to compare the effect of low- versus high-load resistance training (RT) on muscular adaptations in well-trained subjects. Eighteen young men experienced in RT were matched according to baseline strength, and then randomly assigned to 1 of 2 experimental groups: a low-load RT routine (LL) where 25-35 repetitions were pe...

The purpose of this study was to examine that the effects of a six week of two different stretching exercises together with plyometric training on hamstring flexibility (HF), vertical jump performance (VJ) and electromyographic (EMG) activities of vastus lateralis (VL) and vastus medialis (VM) muscles. Twenty-seven track and field athletes voluntee...

Obesity, a disorder of body composition, is defined by a relative or absolute excess of body fat. In general adult population, obesity has been associated with a diverse array of adverse health outcomes, including major causes of death such as cancer, diabetes, cardiovascular disease, as well as functional impairment from problems such as osteoarth...

This study investigated the effects of different acute exercise mode on subjective hunger rating. Ten healthy woman subjects participated voluntarily in the study and written informed consent was obtained from all subjects before participation. Subjects undertook four, 1,5 h trials (3exercises and 1 control) in a randomized crossover design. In the...

Background: Obesity is spreading all around the world rapidly, especially in developed and developing countries, due to physical inactivity related to technological developments and increase in the consumption on energy rich food. Discovery of the new stimulants that affect various parts of the hypothalamus and produced from some peripheral tissues...

Background: Obesity is spreading all around the world rapidly, especially in developed and developing countries, due to physical inactivity related to technological developments and increase in the consumption on energy rich food. Discovery of the new stimulants that affect various parts of the hypothalamus and produced from some peripheral tissues...

It has been hypothesized that performing aerobic exercise after an overnight fast accelerates the loss of body fat. The purpose of this study was to investigate changes in fat mass and fat-free mass following four weeks of volume-equated fasted versus fed aerobic exercise in young women adhering to a hypocaloric diet. Twenty healthy young female vo...

The purpose of the study was to compare core muscle activation of the tradition prone plank with a modified version performed with a long-lever and posterior-tilt using surface electromyography. To further determine if a specific component of this modified plank was more effective than the other in enhancing muscle activity, the plank with a long l...

Purpose It has been hypothesized that lifting light loads to muscular failure will activate the full spectrum of MUs and thus bring about muscular adaptations similar to high-load training. The purpose of this study was to investigate EMG activity during low- versus high-load training during performance of a multi-joint exercise by well-trained su...

It is believed that regional activation within a muscle may lead to greater site-specific muscular adaptations in the activated portion of the muscle. Because the hamstrings are a biarticular muscle, it can be theorized that single-joint exercises where movement originates at the hip versus the knee will result in differential activation of the mus...

Regimented resistance training has been shown to promote marked increases in skeletal muscle mass. Although muscle hypertrophy can be attained through a wide range of resistance training programs, the principle of specificity, which states that adaptations are specific to the nature of the applied stimulus, dictates that some programs will promote...

Over the past decade, our knowledge of how homeostatic systems regulate food intake and body weight has increased with the discovery of circulating peptides such as leptin, acyl ghrelin, des-acyl ghrelin and obestatin. These hormones regulate the appetite and food intake by sending signals to the brain regarding the body's nutritional status. The p...

TARGETED HIP EXTENSION EXERCISES ARE OFTEN PERFORMED TO DEVELOP STRENGTH, POWER, AND ENDURANCE IN THE HIP EXTENSORS. ALTHOUGH THESE EXERCISES CAN POSSESS SIMILAR MOVEMENT PATTERNS, BIOMECHANICALLY THE INSTANTANEOUS TORQUE AT DIFFERENT RANGES OF HIP EXTENSION VARIES DEPENDING ON BODY POSITION RELATIVE TO SPACE. FOR THESE REASONS, IT IS PROPOSED THAT...

The reverse fly machine is a popular exercise for strengthening the horizontal shoulder abductors including the posterior deltoid. . There seems to be little consensus as to which hand position most effectively targets the posterior deltoid despite this option on most machines. This study investigated the impact of varying one's hand position, and...

THE PUSH-UP IS WIDELY USED BY FITNESS PROFESSIONALS TO DEVELOP UPPER-BODY STRENGTH, POWER, AND LOCAL MUSCULAR ENDURANCE. ALTHOUGH THE LOAD DURING A PUSH-UP IS LIMITED BY AN INDIVIDUAL'S BODYWEIGHT AND ANTHROPOMETRY, MANY BIOMECHANICAL VARIATIONS OF THE EXERCISE CAN BE PERFORMED. THESE VARIATIONS MAY INVOLVE ALTERING HAND AND FOOT POSITIONS, WHICH I...

This study investigated the effects of a long bout of aerobic exercise on hunger and energy intake and circulating levels of leptin and acylated ghrelin. Ten healthy male subjects undertook two, 4 h trials in a randomized crossover design. In the exercise trial subjects ran for 105 min at 50% of maximal oxygen uptake and the last 15 min at 70% of m...

Ghrelin and Leptin hormones play roles in energy homeostasis and food intake. The purpose of this study was to examine the effects of moderate-intensity exercise on plasma acylated ghrelin and serum leptin levels. Seven trained male subjects (age: 19.42±0.97 yr, body mass: 70.6±4.0 kg, VO2max: 63.14±6.09 ml·kg-1·min-1) voluntarily participated in t...

Summary Study aim: To determine the effects of oral L-arginine supplementation on vasodilation, blood flow and maximum oxygen uptake (‡O2max) in soccer players. Material and methods: A group of 24 healthy male soccer players aged 20 – 26 years volunteered to participate in the study. The subjects were randomly assigned into 3 groups: experimental,...

Background. Malnourished infants are small for age and weight. Objectives. Determine profiles in 24-hour energy metabolism in recovering malnourished infants and compare to similarly aged healthy controls. Methods. 10 malnourished infants (58.1 +/- 5.9 cm, 7.7 +/- 5.6 months) were healthy prior to spending 22 hours in the Enhanced Metabolic Testing...

The purpose of this study was to determine the effects of arousal level on reaction time of the eight-year old children 111 karate. The subjects were ten (N=IO) volunteer male children. All the subjects were 8 years old. Subjects' optimal, low and high level of arousal were measured via heart rate, blood pressure and, reaction time parameters. A re...