scholarly journals Vastus and Patellar Protection with Range of motion Pad – Advanced Personal Protective Equipment for the Lower Body

2018 ◽  
Vol 62 (1) ◽  
pp. 1363-1367
Author(s):  
Richard T. Stone ◽  
Brandon Moeller ◽  
Thomas Schnieders ◽  
Ahmad Mumani
Keyword(s):  
Gait Analysis ◽  
Range Of Motion ◽  
Personal Protective Equipment ◽  
American Football ◽  
Football Players ◽  
Protective Equipment ◽  
Lower Body ◽  
Physical Testing ◽  
Initial Survey ◽  
And Performance

The standard knee pad is considered the most ineffective personal protective equipment in the American football player’s uniform. This study quantitatively and qualitatively assesses personal protective equipment for the lower body for U.S. football players against the VAPPR Pad (Vastus And Patellar Protection with Range of motion), the next iteration of lower body protection. The study consisted of player surveys, material drop testing, and Performance Drill testing including broad-jump, L-drill, pro-agility, and gait analysis with 138 participants in the initial survey and 25 men in the physical testing. Results of the Performance Drill Testing proved that unpadded players perform at higher levels than padded players; established no difference in performance between the unpadded players and players wearing the VAPPR Pad; and validated the VAPPR Pad’s superiority to the standard knee pad.

Physical and performance characteristics related to starter status, position, and division in Japanese collegiate American-football players

2021 ◽  
pp. 1-8
Author(s):  
Junta Iguchi ◽  
Minoru Matsunami ◽  
Tatsuya Hojo ◽  
Yoshihiko Fujisawa ◽  
Kenji Kuzuhara ◽  
...  
Keyword(s):  
Performance Test ◽  
Vertical Jump ◽  
American Football ◽  
Football Players ◽  
Jump Height ◽  
Test Results ◽  
Repetition Maximum ◽  
Vertical Jump Height ◽  
Division 1 ◽  
And Performance

BACKGROUND: Few studies have investigated the variations in body composition and performance in Japanese collegiate American-football players. OBJECTIVE: To clarify what characterizes competitors at the highest levels – in the top division or on the starting lineup – we compared players’ body compositions and performance test results. METHODS: This study included 172 players. Each player’s body composition and performance (one-repetition maximum bench press, one-repetition maximum back squat, and vertical jump height) were measured; power was estimated from vertical jump height and body weight. Players were compared according to status (starter vs. non-starter), position (skill vs. linemen), and division (1 vs. 2). Regression analysis was performed to determine characteristics for being a starter. RESULTS: Players in higher divisions and who were starters were stronger and had more power, greater body size, and better performance test results. Players in skill positions were relatively stronger than those in linemen positions. Vertical jump height was a significant predictor of being a starter in Division 1. CONCLUSION: Power and vertical jump may be a deciding factor for playing as a starter or in a higher division.

scholarly journals Characterizing the Effects of Explosive Ordnance Disposal Operations on the Human Body While Wearing Heavy Personal Protective Equipment

2021 ◽  
pp. 001872082199262
Author(s):  
Yi-Ning Wu ◽  
Adam Norton ◽  
Michael R. Zielinski ◽  
Pei-Chun Kao ◽  
Andrew Stanwicks ◽  
...  
Keyword(s):  
Human Body ◽  
Personal Protective Equipment ◽  
Evaluation Methodology ◽  
Protective Equipment ◽  
Physiological Measurement ◽  
Cognitive Stress ◽  
Explosive Ordnance Disposal ◽  
And Performance ◽  
Inspection Tasks ◽  
Muscle Activations

Objective To provide a comprehensive characterization of explosive ordnance disposal (EOD) personal protective equipment (PPE) by evaluating its effects on the human body, specifically the poses, tasks, and conditions under which EOD operations are performed. Background EOD PPE is designed to protect technicians from a blast. The required features of protection make EOD PPE heavy, bulky, poorly ventilated, and difficult to maneuver in. It is not clear how the EOD PPE wearer physiologically adapts to maintain physical and cognitive performance during EOD operations. Method Fourteen participants performed EOD operations including mobility and inspection tasks with and without EOD PPE. Physiological measurement and kinematic data recording were used to record human physiological responses and performance. Results All physiological measures were significantly higher during the mobility and the inspection tasks when EOD PPE was worn. Participants spent significantly more time to complete the mobility tasks, whereas mixed results were found in the inspection tasks. Higher back muscle activations were seen in participants who performed object manipulation while wearing EOD PPE. Conclusion EOD operations while wearing EOD PPE pose significant physical stress on the human body. The wearer’s mobility is impacted by EOD PPE, resulting in decreased speed and higher muscle activations. Application The testing and evaluation methodology in this study can be used to benchmark future EOD PPE designs. Identifying hazards posed by EOD PPE lays the groundwork for developing mitigation plans, such as exoskeletons, to reduce physical and cognitive stress caused by EOD PPE on the wearers without compromising their operational performance.

scholarly journals Return to Play and Performance After Primary ACL Reconstruction in American Football Players: A Systematic Review

2020 ◽  
Vol 8 (10) ◽  
pp. 232596712095965
Author(s):  
Bailey J. Ross ◽  
Ian Savage-Elliott ◽  
Symone M. Brown ◽  
Mary K. Mulcahey
Keyword(s):  
Systematic Review ◽  
Acl Reconstruction ◽  
Study Design ◽  
Acl Injury ◽  
Performance Level ◽  
American Football ◽  
Return To Play ◽  
Football Players ◽  
Cochrane Central Register ◽  
And Performance

Background: Anterior cruciate ligament (ACL) injuries are among the most common sports-related injuries, and they can have a negative impact on players’ ability to return to play (RTP). There is a paucity of literature focused on RTP after ACL reconstruction (ACLR) in collision sports. Purpose: To characterize the impact that an ACL injury has on the ability to RTP and the post-ACLR performance level in American football players. Study Design: Systematic review; Level of evidence, 4. Methods: An electronic search was performed using the following databases: the Cochrane Database of Systematic Reviews, the Cochrane Central Register of Controlled Trials, PubMed, Embase, and the Cumulative Index to Nursing and Allied Health Literature. Included studies were written in English; were published since the year 2000; examined only American football players; and reported on RTP, performance, and/or career length after primary ACLR. Results: The initial search yielded 442 unique studies. Of these, 427 were removed after screening, leaving 15 studies that met inclusion criteria. An additional 2 studies were identified in these studies’ references, yielding a total of 17. The rate of RTP after ACLR for football players was 67.2% (1249/1859), and the mean time to return was 11.6 months (range, 35.8-55.8 weeks). Although considerable heterogeneity existed in the study design and outcomes measured, in general, a majority of football players experienced greater declines from their preinjury performance level than controls over the same time period. Conclusion: An ACL injury negatively affected football players’ ability to RTP and their post-ACLR performance. The degree of effect varied by several factors, including playing position, preinjury performance level, and National Football League Draft round. These results may be used by physicians and football players to develop reasonable expectations for returning to play and performance after an ACL injury.

Effects of In-Season (5 Weeks) Creatine and Pyruvate Supplementation on Anaerobic Performance and Body Composition in American Football Players

1999 ◽  
Vol 9 (2) ◽  
pp. 146-165 ◽  
Author(s):  
Michael H. Stone ◽  
Kimberly Sanborn ◽  
Lucille L. Smith ◽  
Harold S. O'Bryant ◽  
Tommy Hoke ◽  
...  
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Bench Press ◽  
Vertical Jump ◽  
American Football ◽  
Mass Composition ◽  
Football Players ◽  
Supplementation Period ◽  
And Performance ◽  
Body Mass Composition

The purpose of this investigation was to study the efficacy of two dietary supplements on measures of body mass, body composition, and performance in 42 American football players. Group CM (n = 9) received creatine monohy-drate, Group P (n = 11) received calcium pyruvate. Group COM (n = 11) received a combination of calcium pyruvate (60%) and creatine (40%), and Group PL received a placebo. Tests were performed before (Tl) and after (T2) the 5-week supplementation period, during which the subjects continued their normal training schedules. Compared to P and PL. CM and COM showed significantly greater increases for body mass, lean body mass, 1 repetition maximum (RM) bench press, combined 1 RM squat and bench press, and static vertical jump (SVJ) power output. Peak rate of force development for SVJ was significantly greater for CM compared to P and PL. Creatine and the combination supplement enhanced training adaptations associated with body mass/composition, maximum strength, and SVJ; however, pyruvate supplementation alone was ineffective.

RANGE OF MOTION AND PERCEIVED COMFORT OF PERSONAL PROTECTIVE EQUIPMENT ON WOODWORKERS

1998 ◽  
Vol 30 (Supplement) ◽  
pp. 316
Author(s):  
B. H. Reuter ◽  
G. A. Wright ◽  
C. G. Bloomfield ◽  
D. D. Pascoe
Keyword(s):  
Range Of Motion ◽  
Personal Protective Equipment ◽  
Protective Equipment

Cervical Spine CT Can Miss Fractures in American Football Players When Protective Equipment is in Place: A Cadaver Study

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Amit Piple ◽  
Carol Bernier ◽  
Mark Rogers ◽  
Kelley K. Whitmer ◽  
David Keyes ◽  
...  
Keyword(s):  
Cervical Spine ◽  
Cadaver Study ◽  
American Football ◽  
Football Players ◽  
Protective Equipment ◽  
Spine Ct

scholarly journals Physical Characteristics and Performance of Japanese Top-Level American Football Players

2017 ◽  
Vol 31 (9) ◽  
pp. 2455-2461
Author(s):  
Daichi Yamashita ◽  
Masaki Asakura ◽  
Yoshihiko Ito ◽  
Shinzo Yamada ◽  
Yosuke Yamada
Keyword(s):  
Physical Characteristics ◽  
American Football ◽  
Football Players ◽  
And Performance

scholarly journals Effect of Wearing Personal Protective Equipment (PPE) on CPR Quality in Times of the COVID-19 Pandemic—A Simulation, Randomised Crossover Trial

2021 ◽  
Vol 10 (8) ◽  
pp. 1728
Author(s):  
Simon Rauch ◽  
Michiel Jan van Veelen ◽  
Rosmarie Oberhammer ◽  
Tomas Dal Cappello ◽  
Giulia Roveri ◽  
...  
Keyword(s):  
Personal Protective Equipment ◽  
Protective Equipment ◽  
Resuscitation Guidelines ◽  
Significant Difference ◽  
Negative Effect ◽  
Cpr Quality ◽  
The Difference ◽  
Analyse Data ◽  
And Performance

Cardiopulmonary resuscitation (CPR) is considered an aerosol-generating procedure. Consequently, COVID-19 resuscitation guidelines recommend the use of personal protective equipment (PPE) during resuscitation. In this simulation of randomised crossover trials, we investigated the influence of PPE on the quality of chest compressions (CCs). Thirty-four emergency medical service BLS-providers performed two 20 min CPR sequences (five 2 min cycles alternated by 2 min of rest) on manikins, once with and once without PPE, in a randomised order. The PPE was composed of a filtering facepiece 3 FFP3 mask, safety glasses, gloves and a long-sleeved gown. The primary outcome was defined as the difference between compression depth with and without PPE; secondary outcomes were defined as differences in CC rate, release and the number of effective CCs. The participants graded fatigue and performance, while generalised estimating equations (GEE) were used to analyse data. There was no significant difference in CC quality between sequences without and with PPE regarding depth (mean depth 54 ± 5 vs. 54 ± 6 mm respectively), rate (mean rate 119 ± 9 and 118 ± 6 compressions per minute), release (mean release 2 ± 2 vs. 2 ± 2 mm) and the number of effective CCs (43 ± 18 vs. 45 ± 17). The participants appraised higher fatigue when equipped with PPE in comparison to when equipped without PPE (p < 0.001), and lower performance was appraised when equipped with PPE in comparison to when equipped without PPE (p = 0.031). There is no negative effect of wearing PPE on the quality of CCs during CPR in comparison to not wearing PPE.

scholarly journals Anthropometric and Performance Parameters of Japanese High School American Football Players: A Case Study of Selection for International Matches

2020 ◽  
pp. 1-7
Author(s):  
Daichi Yamashita ◽  
Takafumi Kubo
Keyword(s):  
High School ◽  
Body Mass ◽  
American Football ◽  
Normative Values ◽  
Football Players ◽  
Performance Parameters ◽  
Strength And Conditioning ◽  
High School Grades ◽  
Grade Difference ◽  
And Performance

This study aimed to compare the anthropometric and performance parameters between American football players from different high school grades and to compare their physical characteristics to the normative values for U.S. and Japanese players from previous studies. The analysis included 240 grade 10 and 11 American football players. The testing included height, body mass, broad jump, 40-yard dash, and pro-agility shuttle. The analysis was stratified by position: linemen (offensive and defensive), big skill players (fullbacks, tight ends, and linebackers), and skill players (wide receivers, running backs, and defensive backs). The only between-grade difference was body mass for linemen (Cohen’s d>0.6), with no moderate effects for all other measured variables (|d| ≦0.6). No Japanese players were better in both mass and performance measures than U.S. elite high school players. The strength and conditioning program for long-term athlete development should be established for American football players in Japan.

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