Farzad Jalilvand

Cardiff Metropolitan University | cardiffmet

As the demands of training and competition increase so does the potential risk of injury and illness to the athlete whilst seeking to maximize their adaptive processes to promote optimal performance. Therefore, as a strategy to mitigate this risk, strength and conditioning coaches need reliable and valid monitoring tools to track an athlete's statu...

The primary purpose of this study was to measure the acute effects on muscle thickness, arm circumference, and peak force between unilateral seated row and unilateral biceps curl exercises for elbow flexors after a RT session in recreationally-trained subjects. MeThodS: fourteen resistance-trained men (25.3±2.5years, 76.5±6.4kg, 174.6±7cm) performe...

Background: The primary purpose of this study was to measure the acute effects on muscle thickness, arm circumference, and peak force between unilateral seated row and unilateral biceps curl exercises for elbow flexors after a RT session in recreationally-trained subjects. Methods: Fourteen resistance-trained men (25.3 ± 2.5years, 76.5± 6.4kg, 1...

It has been well established that plyometric and speed training have positive impacts on fitness parameters in soccer players. The aim of this study was to compare short-term effects of a combined plyometric and speed training implemented on the same or separate days of a week on change of direction (COD), linear speed (LS), and repeated sprint abi...

Journal of Biomedical Engineering and Medical Imaging

Journal of Biomedical Engineering and Medical Imaging_The lunge exercise is considered a bilateral and multi-joint exercise; in this way, each lower limb presents different force distributions in different techniques and body positions. The purpose of this study was to measure the vertical force distribution between lower limbs in different lunge e...

Purpose: Strength and conditioning coaches have two main goals when training athletes, firstly to improve athletic abilities to reach maximum potential, and secondly to develop specific training protocols that will facilitate appropriate timing of peak performance. Athletes are monitored to provide objective information on the effect of training pr...

Strength and conditioning for collegiate American football (AF) players follows basic principles of training, adapted within numerous contextual challenges. Some challenges include seasonal calendars, contact time restrictions, academic model and, academic requirements. The greatest expertise of the strength and conditioning coach in an academic se...

Jalilvand, F, Banoocy, NK, Rumpf, MC, and Lockie, RG. Relationship between body mass, peak power, and power-to-body mass ratio on sprint velocity and momentum in high-school football players. J Strength Cond Res XX(X): 000-000, 2018-The ability to rapidly shift one's body mass horizontally or vertically is common within American football irrespecti...

THIS ARTICLE WILL PROVIDE PRACTICAL EXAMPLES OF HOW FIELD TESTING DATA CAN BE PRESENTED TO HIGHLIGHT THE CHARACTERISTICS OF INDIVIDUAL SOCCER PLAYERS. AN EXAMPLE TESTING BATTERY WILL BE DESCRIBED, AS WILL THE PROCESS FOR CONVERTING TEST DATA INTO STANDARDIZED SCORES. DATA WILL BE PRESENTED TO SHOW THE STRENGTHS AND WEAKNESSES OF CERTAIN PLAYERS, AN...

The Arrowhead change-of-direction (COD) speed test was originally designed for soccer, and features three direction changes over a running distance of approximately 37 m. This study aimed to determine the reliability and criterion validity of the Arrowhead test in collegiate soccer players. Twenty Division I female players from the same team comple...

To determine the influence of body mass (BM), and peak anaerobic power measured in watts (PAPw) and power-to-body mass ratio (P:BM) as measured by the vertical countermovement jump (VJ), on sprint velocity (SV) and sprint momentum (SM) in high school American football players.

International Journal of Exercise Science 10(4): 568-579, 2017. NCAA soccer features different substitution rules compared to FIFA-sanctioned matches, with a greater availability of players who can enter the game. This could influence the physiological characteristics of the field position starters (ST) and non-starters (NST) within a collegiate wo...

The ability to complete high-intensity running is essential for soccer. The Yo-Yo Intermittent Recovery Test Level 2 (YYIRT2) can measure this capacity, but there is limited information regarding this assessment in collegiate female soccer players. This study investigated the YYIRT2 as a measure of high-intensity running in this population, and its...

Playing positions in soccer can exhibit different movement demands during a match, contributing to variations in physical and performance characteristics. NCAA soccer features different substitution rules when compared to FIFA-sanctioned matches, which could influence each players' characteristics. Therefore, this study determined the athletic perf...

This study investigated relationships between lower-body power, measured by a vertical jump (VJ) and standing broad jump (SBJ), with multidirectional speed in collegiate female rugby players. The rugby player data was compared to that of general team sport athletes to ascertain whether there were characteristics specific to collegiate rugby players...

The 505 involves a 10-m sprint past a timing gate, followed by a 180° change-of-direction (COD) performed over 5 m. This methodological report investigated an adapted 505 (A505) designed to be football-specific by changing the distances to 10 and 5 yd. Twenty-five high school football players (6 linemen [LM]; 8 quarterbacks, running backs, and line...

A cross-sectional analysis of the characteristics of division I collegiate female soccer field players across year of eligibility. J. Aust. Strength Cond. 24(4) 6-15. 2016 © ASCA. BLUF This research found worthwhile differences in performance (vertical and standing broad jump, 30-m sprint, Yo-Yo Intermittent Recovery Test) in collegiate female socc...

This study investigated relationships between 10 m sprint acceleration, step kinematics (step length and frequency, contact and flight time), and leg muscle performance (power, stiffness, strength). Twenty-eight field sport athletes completed 10 m sprints that were timed and filmed. Velocity and step kinematics were measured for the 0-5, 5-10, and...

This study investigated relationships between dynamic stability and multidirectional jumping. A modified Star Excursion Balance Test (mSEBT), incorporating unilateral lower-body reaching in posteromedial, medial, and anteromedial directions, assessed dynamic stability. Unilateral vertical (VJ), standing broad (SBJ) and lateral jumps (LJ) assessed l...

Cricket batsmen will typically use a rolling start where they walk and drag the bat past the crease before attempting a quick single. Although part of coaching practice, the impact of the rolling start has not been clearly documented. This study investigated the impact of using a static or rolling start prior to a quick single in cricketers. Fourte...

Dynamic stability is an essential physical component for team sport athletes. Certain Functional Movement Screen (FMS) exercises (deep squat; left-and right-leg hurdle step; left-and right-leg in-line lunge [ILL]; left-and right-leg active straight-leg raise; and trunk stability push-up [TSPU]) have been suggested as providing an indication of dyna...

Junior college football: physical and physiological profiling and differences between linemen, offensive backfield, and defensive backfield players.

Linear sprinting speed is an essential physical quality for many athletes. There are a number of different training modalities that can be used to improve sprint performance. Strength and conditioning coaches must select the most appropriate modalities for their athletes, taking into consideration the sprint distances that typically occur during co...

Soccer-specific training (SST) drills are used to develop physiological adaptations, technical and tactical skills, and provide coaches with greater control of external training load. Despite widespread use, there has been little analysis of SST drills. This study quantified the effect of manipulating player numbers on the physiological demands of...

Soccer players must complete a high volume of direction changes during a match. Thus, change-of-direction (COD) ability is an important characteristic to measure, and numerous tests have been designed for this purpose. The Arrowhead test was created specifically for soccer, and is completed by cutting around markers in a set direction, with an init...

There are limitations in using the traditional Functional Movement Screen (FMS) to identify deficiencies affecting athletic performance. Despite this, no research has analyzed the research-grade FMS scoring system with regards to athletic performance, where screens are weighted to increase their sensitivity. This research investigated relationships...