The Elevated Track in Pole Vault: An Advantage During Run-Up?

2018 ◽  
Vol 13 (6) ◽  
pp. 717-723 ◽  
Author(s):  
Johan Cassirame ◽  
Hervé Sanchez ◽  
Jean-Benoit Morin
Keyword(s):  
Small Reduction ◽  
Approach Speed ◽  
Stride Rate ◽  
Final Approach ◽  
Rate Improvement ◽  
Long Jump ◽  
Run Up ◽  
High Level ◽  
Pole Vault ◽  
Final Speed

Background: Approach speed is a major determinant of pole-vault performance. Athletic jump events such as long jump, triple jump, and pole vault can utilize an elevated track for the runway. Feedback from athletes indicates a benefit of using an elevated track on their results. However, there is no evidence that elevated tracks increase athletes’ performance. Purpose: To investigate the potential advantage of using an elevated track during elite pole-vault competitions on run-up speed parameters. Methods: Performance and run-up criteria (speed, stride rate, contact, and aerial time) were measured from 20 high-level male pole-vaulters during official competitions on either a regular or an elevated track. Parameters comparisons were made between both conditions, and run-up parameters were confronted to speed modification on the elevated track. Results: Statistical analyses indicated that for the elevated track, there was a small improvement in final speed (1.1%), stride rate (1.1%), and takeoff distance (3.1%) and a small reduction in aerial time (−1.9%). The study highlighted different individual responses depending on athletes’ capabilities. The authors noted that speed improvement was largely correlated with stride-rate improvement (r = .61) and contact-time reduction (r = −.51) for slower athletes. Conclusions: Elevated tracks can increase final approach speed in pole vault and positively influence performance. Interindividual responses were observed in these findings.

scholarly journals The effects of supplementary plyometric training on the development of selected motor skills of young football players from Akademia Raków Częstochowa football club

2021 ◽  
Vol 4 (1) ◽  
pp. 129-138
Author(s):  
Marta Szymanek-Pilarczyk
Keyword(s):  
Motor Skills ◽  
Football Players ◽  
Plyometric Training ◽  
Short Term ◽  
Football Club ◽  
Sprint Time ◽  
Long Jump ◽  
Run Up ◽  
High Level ◽  
Football Training

Contemporary football requires from players a high level of fitness and efficiency on the pitch. Match statistics display an increased number of short-term movements of high intensity. Due to the changes in the nature of this sports discipline, optimal proportions of shaping motor parameters in football training are sought for.The aim of the research was to learn how plyometric training influences better results in long jump and decreased sprint time for the distance of 5m in a selected group of young players from Akademia Raków Częstochowa football club.24 football players from Akademia Raków Częstochowa football club, aged 16–18, were subject of the research.After using plyometric training, there were statistically relevant better results obtained, both in long jump (p < 0.001) and in a 5m sprint (p < 0.001). One could also notice negative correlation between the jump length and 5m sprint time. The obtained result was statistically relevant (p < 0.001).The use of a selected set of plyometric exercises in supplementary football training in Akademia Raków Częstochowa football club led to better results in long jump without a run-up and shortened 5 m distance sprint time. The results were observed already after 8 weeks of training.

Climate Justice

2018 ◽  
Keyword(s):  
Climate Change ◽  
Sustainable Development Goals ◽  
Climate Justice ◽  
Policy Discourse ◽  
Mary Robinson ◽  
The Public ◽  
Development Goals ◽  
To Come ◽  
Run Up ◽  
High Level

Climate justice requires sharing the burdens and benefits of climate change and its resolution equitably and fairly. It brings together justice between generations and justice within generations. The United Nations Sustainable Development Goals summit in September 2015, and the Conference of Parties to the Framework Convention on Climate Change in Paris in December 2015, brought climate justice center stage in global discussions. In the run up to Paris, Mary Robinson, former president of Ireland and the UN Secretary General’s Special Envoy for Climate Change, instituted the Climate Justice Dialogue. The editors of this volume, an economist and a philosopher, served on the High Level Advisory Committee of the Climate Justice Dialogue. They noted the overlap and mutual enforcement between the economic and philosophical discourses on climate justice. But they also noted the great need for these strands to come together to support the public and policy discourse. This volume is the result.

scholarly journals Injuries in Collegiate Track and Field Jumping: A 2-Year Prospective Surveillance Study

2021 ◽  
Vol 9 (1) ◽  
pp. 232596712097339
Author(s):  
Shota Enoki ◽  
Mami Nagao ◽  
Soju Ishimatsu ◽  
Takuya Shimizu ◽  
Rieko Kuramochi
Keyword(s):  
Track And Field ◽  
Flexor Hallucis Longus ◽  
Injury Incidence ◽  
Hamstring Strain ◽  
Muscle Rupture ◽  
Baseline Information ◽  
Long Jump ◽  
Reaction Forces ◽  
Pole Vault ◽  
Type Of Injury

Background: Athletes participating in track and field jumping events (long jump, triple jump, high jump, and pole vault) are exposed to ground-reaction forces on the takeoff leg that are several times their body weight. This can cause injuries specific to such activities. Purpose: To determine the incidence of injuries in collegiate jumpers using the guidelines set forth by a 2014 consensus statement on injury surveillance during track and field events. Study Design: Descriptive epidemiology study. Methods: A total of 51 jumpers between April 2016 and March 2017 and 54 jumpers between April 2017 and March 2018 participated in this study. All athletes were from a single college in Japan. Baseline information on athletes participating in the long jump, triple jump, high jump, and pole vault was collected at study enrollment. Practice and competition exposures were reported by the team trainer. Injury incidence was calculated as the number of injuries per 1000 athlete-exposures (AEs). Results: A total of 147 injuries were reported among 16,998 exposures (8.65 injuries per 1000 AEs). The most common injury locations were the posterior thigh and lateral ankle (17.0%), followed by the posterior foot or toe (12.9%); the most frequent type of injury was strain/muscle rupture/tear (21.1%). The most common injury for long jumpers was ankle sprain (23.3%); for high jumpers, flexor hallucis longus tendinosis (15.8%); and for pole vaulters, hamstring strain (13.2%). Conclusion: The overall characteristics are different for each event; therefore, injuries for each event need to be investigated.

Measurement of Noise inside the Compartment and Vibration on both Sides of Elastomeric Powertrain Mounts of Passenger Car

2013 ◽  
Vol 471 ◽  
pp. 59-63
Author(s):  
Mohd Noor Arib Rejab ◽  
Roslan Abd Rahman ◽  
Raja Ishak Raja Hamzah ◽  
Jawaid Iqbal Inayat Hussain ◽  
Nazirah Ahmad ◽  
...  
Keyword(s):  
Fast Response ◽  
Sound Level ◽  
Measurement Noise ◽  
The Other ◽  
Vibration Level ◽  
Test Conditions ◽  
Exhaust Noise ◽  
Run Up ◽  
Level Meter ◽  
High Level

This paper presents an evaluation on elastomeric mount used to isolate vibration from powertrain to chassis or structure vehicle. The assessments started with measurement of noise inside compartment, and exhaust noise. This is followed by the measurement of vibration on both sides of elastomeric mounts. The noise in the compartment and exhaust noise is measured according to BS 6086: 1981 and BS ISO 5130: 2007. The noise in the compartment and vibration is tested in three conditions. Firstly, engine is run-up with load (driving at second gear); secondly, without load; and thirdly, without load but hanging. A microphone is fixed at the ear of the mannequin. The fast response and A weighting sound level meter were used for measurement noise in the compartment and exhaust noise. The vibration is measured in terms of acceleration on both sides of each elastomeric powertrain mounts. Two accelerometer transducers are fixed on both sides of powertrain elastomeric mounts. One side was identified as a source of vibration and the other as receiver of vibrations. The results showed that the pattern of overall vibration level on source and receiver increased from 1050 RPM (idling) to 4000 RPM on all test conditions. Vibration transmitted to chassis or receiver structure was analyzed using transmissibility concept. By evaluating test condition of engine run-up without load, informed that the front and rear mounts showed a high level transmissibility contributing to structure-borne noise.

The Owl of Minerva Flies Only at Dusk?

2013 ◽  
Vol 27 (3) ◽  
pp. 545-563
Author(s):  
Josip Glaurdić
Keyword(s):  
Foreign Policy ◽  
The Other ◽  
Clear Picture ◽  
The West ◽  
Policy Makers ◽  
True Nature ◽  
Foreign Office ◽  
Run Up ◽  
British Foreign Office ◽  
High Level

Could the Western foreign policy makers have done anything to prevent the violence accompanying the breakup of Yugoslavia? The answer to that question largely depends on their level of awareness of what was happening in the South Slavic federation in the run-up to war. This article analyzes a string of newly declassified documents of the British Foreign Office related to the February 1991 visit of a high-level British political delegation to Yugoslavia, together with interviews with some of the meetings’ protagonists. These declassified documents and interviews offer a unique snapshot in the development of the Yugoslav crisis and Britain’s policy in the region. They give us a clear picture of the goals and strategies of the principal Yugoslav players and show us what the West knew about the true nature of the Yugoslav crisis and when. The article’s conclusions are clear. Yugoslavia’s breakup and impending violence did not require great foresight. Their cause was known well in advance because it was preannounced—it was the plan of the Serbian regime of Slobodan Milošević to impose a centralized Yugoslavia upon the other republics or, if that failed, to use force to create a Greater Serbia on Yugoslavia’s ruins. Crucially, British policy at the time did nothing to dissuade Milošević from his plan and likely contributed to his confidence in using violence to pursue the creation of a new and enlarged Serbian state.

Effect of take-off from prosthetic versus intact limb on transtibial amputee long jump technique

2012 ◽  
Vol 36 (3) ◽  
pp. 297-305 ◽  
Author(s):  
L Nolan ◽  
Benjamin L Patritti ◽  
Kathy J Simpson
Keyword(s):  
Vertical Velocity ◽  
Sagittal Plane ◽  
Similar Amount ◽  
Prosthetic Limb ◽  
Approach Speed ◽  
Jump Distance ◽  
Long Jump ◽  
Correct Technique ◽  
Nonparametric Comparison ◽  
Intact Limb

Background: Increasing numbers of long jumpers with lower limb amputations choose to take off from their prosthetic limb. It is not yet known what difference in technique, if any, this requires, or which is more advantageous. Objectives: To investigate kinematic differences in long jump technique in athletes with a unilateral transtibial ampution (TT) who take off from their prosthetic limb versus those who take off from their intact limb. Study Design: Naturalistic, field-based, observational; independent group, nonparametric comparison. Methods: Two-dimensional sagittal plane kinematic analysis was performed on all athletes competing in the men’s Paralympic TT long jump finals. Five athletes took off from their prosthetic limb (TOprosth) and five from their intact limb (TOintact). Results: No differences were seen between the two groups in terms of jump distance, approach speed or vertical velocity at touch down. While in contact with the take-off board, the two groups gained a similar amount of vertical velocity. However, the TOprosth group appeared to conserve horizontal velocity by using the prosthesis as a ‘springboard’, minimizing the large hip and knee range of motion displayed by the TOintact group and athletes in previous studies. Conclusions: While differences in technique were observed, no difference was found for jump distance. Clinical relevance Athletes choosing to take-off from their prosthetic limb in long jump require a different technique to those who choose to take-off from their intact limb. Knowledge of the correct technique can help reduce excessive training which can lead to injury, particularly in the residual limb.

scholarly journals An Examination of Approach Run Kinematics in Track and Field Jumping Events

2016 ◽  
Vol 23 (2) ◽  
pp. 82-87 ◽  
Author(s):  
Hubert Makaruk ◽  
Marak Porter ◽  
Marcin Starzak ◽  
Edward Szymczak
Keyword(s):  
Contact Time ◽  
Movement Pattern ◽  
Gait Pattern ◽  
Flight Time ◽  
Track And Field ◽  
Male Athletes ◽  
Step Velocity ◽  
Long Jump ◽  
Pole Vault

Abstract Introduction. The aim of this study was to examine the changes in selected kinematics in the long jump, triple jump, and pole vault to highlight the unique movement pattern characteristics in the approach runs utilised in these events. Material and methods. Data were collected during 1 international and 2 national competitions from 36 male athletes (12 in each event) using an Optojump Next system. Results. This study showed the long jumpers achieved the highest mean step velocity, with the pole vaulters showing the lowest velocity. The velocity of the last step before the take-off was greater (p < 0.05) than the velocity of the penultimate step in all groups of athletes. The length of the last step before the take-off was greater (p < 0.01) than the length of the penultimate step in long jump and pole vault athletes compared to the triple jumpers. The long jumpers demonstrated less contact time (p < 0.01) than the pole vaulters. The contact time of the take-off leg was shorter (p < 0.01) compared to that of the non-take-off leg in pole vaulters. The pole vaulters demonstrated less flight time (p < 0.05) compared to the triple jumpers. Lastly, the flight time during the last step before the take-off was shorter (p < 0.01) than the flight time during the penultimate step in all groups. Conclusions. These findings revealed that each of the track and field jumping events required a distinctive approach run. Therefore, training workouts need to be designed specifically to train the unique gait pattern of the long jump, triple jump, and pole vault.

Environmental and task constraints influence footfall variability in track and field jumping events

2017 ◽  
Vol 13 (4) ◽  
pp. 552-558
Author(s):  
Hubert Makaruk ◽  
Jared Marak Porter ◽  
Marcin Starzak
Keyword(s):  
Step Length ◽  
Gait Pattern ◽  
Track And Field ◽  
Environmental Constraints ◽  
Male Athletes ◽  
Task Constraints ◽  
Long Jump ◽  
Pointing Control ◽  
Pole Vault ◽  
And Task

By analysis of footfall variability in the long jump, triple jump, and pole vault, the present study was designed to highlight gait variability patterns required in varied nested tasks. Twelve male athletes in each event who participated in one international and two national competitions were involved in this study. Twenty five pairs of 1-m Optojump Next system bars were used to evaluate relevant footfall placement. The footfall variability was taken to present the pattern of step regulation and onset of visual regulation. The main results of this study showed that pole vaulters manifested a highly consistent gait pattern, which was different than the pattern which appeared in the horizontal jumps. The results also revealed that the onset of step length adjustments in the horizontal jumps occurred significantly later during the zeroing-in phase of the approach run in comparison to those utilized by the pole vaulters. These findings indicate that locomotor pointing control in the long jump, triple jump, and pole vault produce specific footfall variability patterns due to different task and environmental constraints that need to be taken into account during training and competition settings.

scholarly journals Tsunami risk levels mapping in Puger Sub-District, Jember Regency

2021 ◽  
Vol 930 (1) ◽  
pp. 012094
Author(s):  
E P Anindia ◽  
E Hidayah ◽  
R U A Wiyono
Keyword(s):  
Tsunami Hazard ◽  
Weighting Method ◽  
Risk Levels ◽  
Low Level ◽  
Prone Area ◽  
Medium Level ◽  
Run Up ◽  
Hazard Level ◽  
Tsunami Run Up ◽  
High Level

Abstract Puger sub-district is categorized as a tsunami-prone area because of its location in the South Coast, directly facing the Indian Ocean, which is the meeting point for two active tectonic plates. The active plate zone is prone to causing earthquakes that raise tsunamis. This article will describe the tsunami hazard and vulnerability level in Puger sub-district using the Geographic Information System (GIS) application. The method in this study uses a weighted overlay method. The weighting method is carried out to determine the level of tsunami hazard and vulnerability by following the weighting criteria in previous studies. Physical vulnerability criteria include land elevation, slope, beach type, land use, coastline distance, and rivers. The tsunami hazard level is determined based on the tsunami run-up map from previous studies. Based on the results of the risk mapping, it was found that there were five risk categories in Puger sub-district, namely the very low level (13.90 Ha), low level (271.99 Ha), medium level (7133.25 Ha), high level (644.22 Ha), and very high level (23.29 Ha).

scholarly journals Melt Rate Improvement for High-Level Waste Glass

2002 ◽  
Author(s):  
Josef Matyas ◽  
Pavel R. Hrma ◽  
Dong-Sang Kim
Keyword(s):  
Waste Glass ◽  
High Level Waste ◽  
Rate Improvement ◽  
High Level
Sign in / Sign up

Export Citation Format

Share Document