scholarly journals The Relationship Between Isometric and Dynamic Strength in College Football Players

2008 ◽  
Vol 40 (Supplement) ◽  
pp. S390 ◽  
Author(s):  
Arnold G. Nelson ◽  
Michael R. McGuigan ◽  
Jason B. Winchester
Keyword(s):  
Dynamic Strength ◽  
College Football ◽  
Football Players ◽  
The Relationship

Relationship Between Pretraining Subjective Wellness Measures, Player Load, and Rating-of-Perceived-Exertion Training Load in American College Football

2018 ◽  
Vol 13 (1) ◽  
pp. 95-101 ◽  
Author(s):  
Andrew D. Govus ◽  
Aaron Coutts ◽  
Rob Duffield ◽  
Andrew Murray ◽  
Hugh Fullagar
Keyword(s):  
Muscle Soreness ◽  
Perceived Exertion ◽  
Training Session ◽  
College Football ◽  
Training Load ◽  
Rating Of Perceived Exertion ◽  
Football Players ◽  
Unit Increase ◽  
Relationship Of ◽  
The Relationship

Context:The relationship between pretraining subjective wellness and external and internal training load in American college football is unclear.Purpose:To examine the relationship of pretraining subjective wellness (sleep quality, muscle soreness, energy, wellness Z score) with player load and session rating of perceived exertion (s-RPE-TL) in American college football players.Methods:Subjective wellness (measured using 5-point, Likert-scale questionnaires), external load (derived from GPS and accelerometry), and s-RPE-TL were collected during 3 typical training sessions per week for the second half of an American college football season (8 wk). The relationship of pretraining subjective wellness with player load and s-RPE training load was analyzed using linear mixed models with a random intercept for athlete and a random slope for training session. Standardized mean differences (SMDs) denote the effect magnitude.Results:A 1-unit increase in wellnessZscore and energy was associated with trivial 2.3% (90% confidence interval [CI] 0.5, 4.2; SMD 0.12) and 2.6% (90% CI 0.1, 5.2; SMD 0.13) increases in player load, respectively. A 1-unit increase in muscle soreness (players felt less sore) corresponded to a trivial 4.4% (90% CI −8.4, −0.3; SMD −0.05) decrease in s-RPE training load.Conclusion:Measuring pretraining subjective wellness may provide information about players’ capacity to perform in a training session and could be a key determinant of their response to the imposed training demands American college football. Hence, monitoring subjective wellness may aid in the individualization of training prescription in American college football players.

Revenue per Quality of College Football Recruit

2020 ◽  
Vol 21 (6) ◽  
pp. 571-592 ◽  
Author(s):  
Stephen A. Bergman ◽  
Trevon D. Logan
Keyword(s):  
Team Performance ◽  
College Football ◽  
Football Players ◽  
Compensation Scheme ◽  
Football Bowl Subdivision ◽  
Data Set ◽  
Unique Data ◽  
Ex Ante ◽  
The Relationship

There is significant debate about compensation of college athletes in revenue generating sports. In college football, the potential heterogeneity in player value has received little attention in the discussion. The relationship between player quality, team performance, and sport-specific revenue should inform any compensation scheme for college football players. In this article, we provide estimates of player monetary value in college football. This is the first study to exploit player-specific ex ante recruit ratings, team performance, and football-specific revenue and profit (revenue net of expenditures) to infer player valuations. This allows us to estimate value for players whose performance can be difficult to measure given traditional sport metrics. We use a unique data set which records individual recruits by ex ante star rating annually for every Football Bowl Subdivision (FBS) school and combine that data with data on team performance, bowl appearances by type, and football-specific revenue. Using a valuation approach which links player-specific quality to team performance and subsequently to revenue, we infer the value of recruits by their ex ante recruit rating. We estimate that five-star recruits increase annual revenue by US$650,000, four-star recruits increase revenue by roughly US$350,000, and three-star recruits increase revenue by US$150,000. Two-star recruits, however, are negatively related to revenue and profit, with two-star athletes reducing annual revenue by US$13,000. Overall, our results imply that player valuations are heterogeneous and that ex ante ratings of player quality are strongly related to school-specific football revenue and profit and may be predictive measures in a compensation scheme.

Assessment of Sprint and Change-of-Direction Performance in College Football Players

2013 ◽  
Vol 8 (2) ◽  
pp. 211-212 ◽  
Author(s):  
Giancarlo Condello ◽  
Kevin Schultz ◽  
Antonio Tessitore
Keyword(s):  
College Football ◽  
Football Players ◽  
Change Of Direction ◽  
Football Game ◽  
The Relationship ◽  
Split Time

The aim of the current study was to investigate the relationship between straight-sprint and change-of-direction performance. Total sprinting time and split time at 5 m were collected from 44 college football players during a 15-m straight sprint (SS15m) and a 15-m zigzag sprint with two 60° changes of direction (COD15m). Differences in sprinting time between COD15m and SS15m and between COD5m and SS5m were expressed as percentage of decrement at 5 m and 15 m (Δ%5m and Δ%15m). Significant and high correlations emerged between SS15m and COD15m (r = .86, P < .0001), SS5m and SS15m (r = .92, P < .0001), SS5m and COD5m (r = .92, P < .0001), and COD5m and COD15m (r = .71, P < .0001). Δ%5m and Δ%15m showed a range of 1.2–30.0% and 34.9–59.4%, respectively. These results suggested how straight-sprint and change-of-direction performance are similar abilities in college football players, in particular when a smaller angle of the change of direction is considered. Moreover, it seems necessary to have athletes undergo tests that mimic the demands of football game, which is characterized by sprint on short distances and with changes of direction.

scholarly journals The relationship between cam morphology and hip and groin symptoms and signs in young male football players

2020 ◽  
Vol 30 (7) ◽  
pp. 1221-1231 ◽  
Author(s):  
Pim Klij ◽  
Abida Z. Ginai ◽  
Marinus P. Heijboer ◽  
Jan A. N. Verhaar ◽  
Jan H. Waarsing ◽  
...  
Keyword(s):  
Young Male ◽  
Football Players ◽  
The Relationship ◽  
Cam Morphology ◽  
Symptoms And Signs

Effect of Turf Toe on Foot Contact Pressures in Professional American Football Players

2009 ◽  
Vol 30 (5) ◽  
pp. 405-409 ◽  
Author(s):  
Robert H. Brophy ◽  
Seth C. Gamradt ◽  
Scott J. Ellis ◽  
Ronnie P. Barnes ◽  
Scott A. Rodeo ◽  
...  
Keyword(s):  
Body Mass Index ◽  
National Football League ◽  
Peak Pressure ◽  
American Football ◽  
Football Players ◽  
Plantar Pressures ◽  
History Of ◽  
Turf Toe ◽  
The Relationship ◽  
Contact Pressures

Background: The relationship between turf toe and plantar foot pressures has not been extensively studied. Two hypotheses were tested in a cohort of professional American football players: first, that a history of turf toe is associated with increased peak hallucal and first metatarsophalangeal (MTP) plantar pressures; second, that decreased range of motion (ROM) of the first MTP correlates with increased peak hallucal and first MTP plantar pressures. Materials and Methods: Forty-four athletes from one National Football League (NFL) team were screened for a history of turf toe during preseason training. Dorsal passive MTP ROM and dynamic plantar pressures were measured in both feet of each player. Anatomical masking was used to assess peak pressure at the first MTP and hallux. Results: First MTP dorsiflexion was significantly lower in halluces with a history of turf toe (40.6 ± 15.1 degrees versus 48.4 ± 12.8 degrees, p = 0.04). Peak hallucal pressures were higher in athletes with turf toe (535 ± 288 kPa versus 414 ± 202 kPa, p = 0.05) even after normalizing for athlete body mass index ( p = 0.0003). Peak MTP pressure was not significantly different between the two groups tested. First MTP dorsiflexion did not correlate with peak hallucal or first MTP pressures. Conclusion: This study showed that turf toe is associated with decreased MTP motion. In addition, increased peak hallucal pressures were found. Further study is warranted to determine whether these pressures correlate with the severity of symptoms or progression of turf toe to first MTP arthritis.

Relationship between Multidimensional Perfectionism and Goal Orientations in Sport

2002 ◽  
Vol 24 (4) ◽  
pp. 376-395 ◽  
Author(s):  
John G.H. Dunn ◽  
Janice Causgrove Dunn ◽  
Daniel G. Syrotuik
Keyword(s):  
Canonical Correlation ◽  
Goal Orientations ◽  
Football Players ◽  
Task Orientation ◽  
Personal Standards ◽  
Parental Pressure ◽  
Multidimensional Construct ◽  
Maladaptive Perfectionism ◽  
Concern Over Mistakes ◽  
The Relationship

This study examined the relationship between perfectionism and goal orientations among male Canadian Football players (M age = 18.24 years). Athletes (N = 174) completed inventories to assess perfectionist orientations and goal orientations in sport. Perfectionism was conceptualized as a multidimensional construct and was measured with a newly constructed sport-specific version of the Multidimensional Perfectionism Scale (MPS; Frost, Marten, Lahart, & Rosenblate, 1990). Exploratory factor analysis of the modified MPS revealed four sport-related perfectionism dimensions: perceived parental pressure, personal standards, concern over mistakes, and perceived coach pressure. Canonical correlation analysis obtained two significant canonical functions (RC1 = .36; RC2 = .30). The first one revealed that task orientation was positively correlated with an adaptive profile of perfectionism. The second one revealed that ego orientation was positively associated with a maladaptive profile of perfectionism. Results are discussed in the context of Hamachek’s (1978) conceptualization of adaptive and maladaptive perfectionism.

scholarly journals The Hammer and the Nail: Biomechanics of Striking and Struck Canadian University Football Players

2021 ◽  
Author(s):  
Jeffrey S. Brooks ◽  
Adam Redgrift ◽  
Allen A. Champagne ◽  
James P. Dickey
Keyword(s):  
College Football ◽  
Head Impact ◽  
Football Players ◽  
Video Footage ◽  
Impact Location ◽  
Rule Changes ◽  
Left And Right ◽  
The Brain

AbstractThis study sought to evaluate head accelerations in both players involved in a football collision. Players on two opposing Canadian university teams were equipped with helmet mounted sensors during one game per season, for two consecutive seasons. A total of 276 collisions between 58 instrumented players were identified via video and cross-referenced with sensor timestamps. Player involvement (striking and struck), impact type (block or tackle), head impact location (front, back, left and right), and play type were recorded from video footage. While struck players did not experience significantly different linear or rotational accelerations between any play types, striking players had the highest linear and rotational head accelerations during kickoff plays (p ≤ .03). Striking players also experienced greater linear and rotational head accelerations than struck players during kickoff plays (p = .001). However, struck players experienced greater linear and rotational accelerations than striking players during kick return plays (p ≤ .008). Other studies have established that the more severe the head impact, the greater risk for injury to the brain. This paper’s results highlight that kickoff play rule changes, as implemented in American college football, would decrease head impact exposure of Canadian university football athletes and make the game safer.

Sign in / Sign up

Export Citation Format

Share Document