Published Research

Read about our numerous scientific studies and research papers

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Published research

To return-to-play or not to return-to-play: Assessing quadriceps strain in a professional soccer player

Written by: Hembre, A.1 and Eriksrud, O.2 1 Apex klinikken, Oslo, Norway 2 1080 Motion AB, Stockholm, Sweden Background In soccer, muscle injuries account for 25-31% of all injuries (Ueblacker, Muller-Wohlfahrt & Ekstrand, 2015; Ekstrand, Hagglund & Walden, 2011). Muscle injuries of the lower extremities dominate (92%), with injuries to the major muscle groups as […]

May 23, 2018

Ghelem A. Eriksrud O. the effect of strength and mobility training on vertical jump performance in a professional basketball player

Jumping and sprinting are key performance indicators in basketball as indicated by their inclusion in the NBA Combine. Vertical jump is a classical power test, which is determined by the ability to generate force into the ground at increasing velocities. The interaction of force and velocity can be determined from single or multiple jumps and presented as a force-velocity (F-v) curve. In a single jump F-v curve information of how the athlete is able to generate force as the velocity increases is provided. From multiple jumps both F-v and load-velocity curves can be generated to determine how an athlete is able to generate force and speed across a continuum of loads.

April 06, 2018

Eriksrud O. (2014) Measuring sports performance using robotic technology. icsports 2014

Measuring sports performance using new robotic technology Eriksrud O. Eriksrud1, O., 1Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway. Objective measures of the physical factors (force, speed, power, work and energy) in different movement patterns is important in both testing and training as well as for rehabilitation and athletic development. Different technologies, […]

November 08, 2016

Eriksrud O, Ghelem A, Parnevik-muth J. Relationship of rotational force, speed and power to golf performance.

Relationship of rotational force, speed and power to golf performance Ola Eriksrud1 , Ali Ghelem1 , Jessica Parnevik-Muth1 1 1080 Motion, Stockholm, Sweden Introduction The physical factors that determine athletic performance are mobility, stability, force, speed, power and endurance. Current methods of testing of these physical factors have a tendency to focus on isolated joints […]

November 08, 2016

Ghelem A, Eriksrud O. (2014) rotational power and hitting speed baseball.

Athletic performance, such as throwing, kicking and hitting, can be quantified by the accuracy and velocity of the performance. For a batter in baseball this is to hit and give the ball high velocity in the right direction. High velocity of the ball after impact with the bat is dependent upon both the speed of the bat at impact and the type of collision between the bat and the ball. Speed of the bat is dependent upon the ability of the body to generate force and speed (power) throughout the body.

November 07, 2016

Ghelem A, Eriksrud O. (2014) the combined effect of improved mobility and power in a professional golfer.

Performance in golf is measured by accuracy and distance, where the type of shot will determine their relative importance. The physical factors that determine golf performance are; mobility, stability, strength, power and endurance. Mobility and power have been reported to be more important than maximum strength in determining maximum club head speed (Hellstrom, 2009). Mobility, and in particular axial rotation, will provide the important distance needed to create speed. Power is important, since the downswing takes about 0.2–0.3 seconds for the average tour player, and the mass of the club is light as compared to 1 Repetition Maximum in axial rotation. Well trained top-class players with high club speed may therefore develop a slower club speed after a period of slow velocity strength training (Hellstrom, 2009). The purpose of this case study was to document the combined effect of flexibility and power training on club speed in a professional golfer.

November 07, 2016

Eriksrud O, Parnevik-muth J, Ghelem A. (2014) 1080 map as a quantitative and qualitative tool in the rehabilitation of a high level triathlete with low back and shoulder pain.

One reason why athletes and patients come to rehabilitation is to decrease pain and dysfunction, and to enhance physical performance. Any functional performance is dependent upon the interaction of mobility of different joints. Global movements, where subject engage the entire kinematic chain, will quantify total movement, or output of the body. One part of 1080 Movement Assessment Profile (1080 MAP) is based upon the unique combination of upper extremity reaches in different directions either measured in centimeters or degrees. Performance on these different global movements will give indications as to what joint(s) or region(s) to target in an intervention that is based upon movement and not symptoms. Furthermore, 1080 MAP can also guide combinations of movements to be used in treatment. The quantitative component of 1080 MAP does not say anything about the quality of the movement. The addition of qualitative assessment to the quantitative measures will provide further information as to what joints and regions to target in follow-up testing and treatment. The purpose of this case study is to investigate the effectiveness of the quantitative and qualitative components of 1080 MAP in guiding treatments for a high level triathlete with low back and shoulder pain.

November 07, 2016

Eriksrud O, Parnevik-muth J, Ghelem A. (2014) 1080 map as a measure joint mobility in a patient with bilateral hip resurfacing.

One reason why athletes and patients come to training and rehabilitation is to increase physical performance. Any functional performance is dependent upon the interaction of the mobility of different joints and regions. Joint mobility is traditionally tested joint-byjoint and plane-by-plane in open kinematic chains. This may be one of the reasons why current methods of joint mobility testing fail to correlate with functional movement patterns (Moreside & McGill, 2012) and performance (McGill, Andersen, & Horne, 2012). As a response to this lack relationship to performance Athletic 1080 has developed a whole body mobility screen. 1080 Movement Assessment Profile (1080 MAP) is based upon the unique combination of upper extremity reaches in different directions that are measured in centimeters and degrees. The ability to perform the different reaches is dependent upon the combination of specific joint mobilities. Consequently, the results and analysis of different tests will give information about restricted or normal mobility of different joints and regions (Eriksrud, 2013). The purpose of this case study is to use 1080 MAP movement screen as a measure of mobility and to determine what joint(s) that should be targeted by a mobility intervention.

November 07, 2016

Riggberger K, Eriksrud O. (2015) the effect of high intensity power training during a competitive international track and field season.

Many elite athletes have difficulty maintaining the ability to generate power during a long competitive season. Competitions or games are frequent and therefore it is difficult to schedule the necessary training sessions to maintain the power generation capacity in the lower extremities. The purpose of this case study is to investigate if it is possible to maintain and even enhance the power generation capacity of the lower extremities during a competition season

November 07, 2016

Riggberger K, Eriksrud O. (2015) the effect of short duration high load strength training on international level long jumper.

Power is fundamental to elite athletic performance (J. Cronin & Sleivert, 2005; Frost, Cronin, & Newton, 2010). Increasing either maximum force or velocity, or both can increase maximum power. Strength training programs designed to increase maximum strength and power commonly last 8-12 weeks (J. Cronin & Sleivert, 2005). It is difficult to obtain information about effective maximum strength training programs for track and field athletes at the international level. The purpose of this case study was to study the effect of a high load short duration maximum strength-training program on power in an international track and field (long jump) athlete.

November 07, 2016

Ghelem A, Eriksrud O. (2016) the effect of heavy strength training on power development in cycling.

Power and force output is important in cycling. It has been shown that adding heavy strength training improves performance in well-trained female cyclists (Vikmoen et al., 2015). The purpose of this case study was to look at the effect of heavy strength training in 1080 Quantum on power development in cycling in an elite male triathlete.

November 07, 2016