The purpose of this study is to examine the effect of one week, sport specific weight loss on the quadriceps and handgrip force production in athletes with two or more years of wrestling experience. There were 6 male wrestlers who participated in the study. After the data was collected, it was analyzed through Microsoft Excel. The primary investigator conducted a T-Test on the peak force production of the leg extension at a resistance of 60 degrees per second before and after weight loss as seen in table 1. The significance for the T-Test was set at α=0.05. The p-value was 0.04795, therefore, showing a significant relationship between the change in power before and after weight loss of the peak force production of the leg extension at a …show more content…
The R-value is -0.908, which is a strong and negative correralation. The primary investigator also conducted a Pearson correlation between the change in power of the mean handgrip force production of the right hand and weight loss as shown in figure 2. The R-value is -0.859, which is a strong and negative correralationIn addition, the primary investigator conducted a Pearson correlation between the change in power of the peak handgrip force production of the left hand and weight loss as shown in figure 3. The R-value is 0.0392, which is a weak correralation. Finally, the primary investigator conducted a Pearson correlation between the change in power of the mean handgrip force production of the left hand and weight loss as shown in figure 3. The R-value is 0.1412, which is a weak correralation. The leg extension peak and mean force production at both 60 degrees and 120 degrees per second results showed a significant relationship between change of force before and after weight loss. Further, the handgrip force production results showed a strong and negative correlation between the peak and mean results of the right hand and weight loss. However, the results revealed that there was a weak correlation between the peak and
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The definition of power training is training is most commonly used to develop a muscle group’s ability to contract at maximum force in the shortest amount of time possible (McArdle, Katch & Katch 2015). Weight training is defined as a system of conditioning involving lifting weights especially for strength and endurance (Merriam and Webster 2015). Power is important to acceleration as the runner’s feet are in contact with the floor for longer than if they were at full speed and so more power is needed to create movement and quickly (Mansfield athletics club 2012). Research, by Mohamed Souhaiel Chelly (2009), showed the effect of back squat and other forms of power training over a 2 months period (twice a week) on acceleration and other forms of explosive movements by football players. They found that in the first 5 meters in a 40m sprint the velocity of the players improved after using the power training techniques. This is specific to junior soccer players and so may not be specific to other sports or those of different athletic standards. In the book ‘strength and power in sport’, it is noted by the author (Latif Thomas 2010) that “The use of training methods involving, maximal and near maximal contractions, cause a remarkable increase in RFD accompanied by an
I stumbled awkwardly as I held the door open behind one of my friends. Walking into a large matted room filled with weight benches, large football players, and screaming coaches, I acted as if I knew the ropes of everything, as that was the key to success. I joined the tiny group of much smaller athletes huddled in the corner, separating themselves clearly from the football side of the room. This was my first day of wrestling practice. I had no idea what to expect, no idea how it would challenge me, and I was only there because I heard it was hard and I wanted to push myself. What would come to happen in the next several weeks would cause my head to spin, body to be broken, and would change my entire life mentality forever.
Dr. Delp’s research analyzes muscle movement, structure, and purpose with the use of model simulations mechanisms and other software technology. In Running with a load increases leg stiffness, it is identified that added loads to the body impacts running posture, causing crouching of the body, and does contribute to higher leg stiffness. In line with Dr. Delp’s talk today of the “Dynamics of walking and running,” a comparison is established between both types of movement and the authors delve into how each are impacted when under a load (ranging from 10-30% body fat). Subjects walking and running under a load, compared to zero load, were to found to have longer ground
There were 24 men and 16 women who were physically active to participate in the study. The participants were asked to not complete any exhaustive exercise 48 hours prior to the session. To assess strength,
Gymnasts must train for maximum strength gains, with little hypertrophy, in order maintain a slim physique (Sands, McNeal, Jenni, & Delong, 2000). Gymnasts have to be careful, because they cannot gain too much muscle mass, to the point where they are too heavy for their event (Sands et al., 2000). If they are too heavy it will weigh them down, decrease performance, and limit their range of motion. Gymnasts must be able to train for strength relative to body weight rather than total strength (Sands et al.,
The Journal of Strength and Conditioning Research, 17(3), 503-509. Retrieved September 5, 2014, from http://journals.lww.com/nsca-jscr/Abstract/2003/08000/Concurrent_Strength_and_Endurance_Training__The.13.aspx
Besides hand length, some other factors could also affect the strength of hand grip. Thus this experiment is done to investigate if athletes’ strong upper limb muscles also contribute to their high grip strength. The difference in the maximum right hand grip strength between college athletes and non-athletes were compared. The null hypothesis is that the maximum right hand grip strength is the same for college athletes and non-athletes. The alternative hypothesis is that the maximum right hand grip strength is different between college athletes and non-athletes.
ANSWER: It is correct as the p-values for Hamstring strength indices 60°/s and all variables remained grander than 0.05. The p-values were 0.08, 0.06, 0.424, 0.506, and 0.802. These p-values do not suggest significance at the 5% level. The r values among Hamstring strength indices 60%/s and functional solidity all are not significant at 0.05 and 0.01 both significant level. Therefore, suggests no significant connection and because of this cause, this can be conclude that not any significant connection possibly will be defined among Hamstring strength indices 60%/s and functional solidity.
It was the beginning of the new wrestling season and all that Tom Allen could think of was his match he lost last year against Joe Kendall. Joe beat Tom at the state tournament to win the 145-pound bracket. The whole day he thought about the entire match and how he should win the final score of the match was 3-2. He was up to the entire match until the third period when Joe got a takedown with 30 seconds left in the match. Tom tried extremely had to get an escape however he wasn’t able to cause him to lose the match. That match ruined the rest of Tom’s week because all he could think of was that disappointing loss. That match also broke his perfect record of 27-0.
A wrestler will use almost every muscle in their body during a match that will last seven minutes if the match is played to the end and may sometimes consist of overtime in the event of a tie (Ratamess, 2011). More specifically, according to Jones and Ledford (2012) the major muscle groups needed to be trained are the biceps, triceps, deltoids, erector spinae, gastrocnemius and soleus, hamstrings, latissimus dorsi and rhomboids, pectoralis, posterior chain, quadriceps, and the trapezius (Jones and Ledford, 2012). According to (Papachristou, 2013) Wrestlers report to experience fatigue to be the highest "in the flexors of the forearm (53.3%) followed by the deltoids (17.4%) then the biceps brachii muscles (12.0)" (Papachristou, 2013). Although wrestling is highly taxing on the whole body, there should be greater emphasis on the upper and lower body muscular systems, due to the pulling and pushing nature of the
Weaknesses: Blood samples were not collected post-exercise to measure the serum testosterone. 12 weeks could be short period to see muscle mass & strength improvement. They did not measure amino acid composition in diets. They did not consider the differences in participant’s BMI and age. The highest values achieved for handgrip & isometric strength were used for
The differing results are likely because of differences in skill level among test subjects, methods of evaluation, and erratic sprint distances. The main strength qualities being explored in this data analysis are: absolute strength, relative strength, high-load speed strength, and low-load speed strength. Every sport requires several combinations of these strength qualities to be successful (13). Absolute strength is the measurement of how much force a subject can exert with no regard to body size (3). Relative strength is the measurement of strength to body size. High-load speed strength is the ability for the muscle to exert a high amount of force while contracting at a high speed. The tests to gauge high-load speed strength are typically short in nature, executed at maximal speeds, and produce high power outputs, and include exercises such as the power clean, snatch, and push jerk (1). Triple extension of the hips, knees, and ankles during these movements allows the athletes to express force against the ground rapidly. Low-load speed strength involves low velocity movements, and is a quality that “reflects the dynamic abilities necessary for sport. They are the maximal strength tests of choice for strength and conditioning professionals”
They defined one independent variable as group, referring to either healthy control or GH injury. The other independent variable was defined as functional exercise, which consisted of bow and arrow (BA), external rotation with scapular squeeze (ERSS), lawnmower, and robbery. The dependent variables were identified as normalized muscle-activation from the serratus anterior (SA), upper trapezius (UT), middle trapezius (MT), and lower trapezius (LT). These values were used to calculate ratios of muscle-activation (Moeller, Huxel Bliven, & Snyder Valier,
Handgrip strength, a simple, easy, rapid, reliable, valid, and cheap approach, has been commonly used to measure muscle strength (Lauretani et al., 2003). Handgrip strength is intensely associated with lower muscle power, knee extension and calf cross-sectional muscle area (Cruz-Jentoft et al., 2010). Handgrip strength is also a predictor of disability of activities of daily living (ADL) among older adults (Al Snih et al., 2004). Handgrip strength is an element of the comprehensive older adult screening tool (COAST).