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Cabarkapa D, Cabarkapa DV, Aleksic J, Scott AA, Fry AC. Relationship between vertical jump performance and playing time and efficiency in professional male basketball players. Front Sports Act Living 2024; 6:1399399. [PMID: 38887688 PMCID: PMC11180803 DOI: 10.3389/fspor.2024.1399399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 05/17/2024] [Indexed: 06/20/2024] Open
Abstract
With innovative force plate technology being available to many sports organizations worldwide that allow for time-efficient in-depth neuromuscular performance assessment, the purpose of the present study was to examine the relationship between some of the most commonly analyzed countermovement vertical jump (CVJ) force-time metrics and basketball playing time and efficiency. Twenty-four professional male basketball players volunteered to participate in the present study. The CVJ testing procedures were conducted within the first quarter of the competitive season span. Following a standardized warm-up protocol, each athlete stepped on a dual uni-axial force plate system sampling at 1,000 Hz and performed three maximum-effort CVJs with no arm swing. To minimize the possible influence of fatigue, each jump trial was separated by a 10-15 s rest interval and the average value across three jumps was used for performance analysis purposes. Basketball playing efficiency and average playing time were obtained at the end of the regular season competitive period from the coaching staff records and the official team records. Pearson product-moment correlation coefficients (r) were used to examine the strength of the relationships between force-time metrics and basketball playing time and efficiency, separately for each dependent variable (p < 0.05). A significant positive association was observed between playing efficiency and eccentric mean force and eccentric mean and peak power (r = 0.406-0.552). Similarly, an increase in eccentric mean power was positively correlated with the number of minutes played during the competitive season (r = 0.464). Moreover, the aforementioned relationship remained present even when eccentric mean power was expressed relative to the player's body mass (r = 0.406). Thus, the findings of the present study indicate that, at the professional level of men's basketball competition, CVJ eccentric strength and power have a positive impact on both playing time and efficiency.
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Affiliation(s)
- Dimitrije Cabarkapa
- Jayhawk Athletic Performance Laboratory—Wu Tsai Human Performance Alliance, Department of Health, Sport and Exercise Sciences, University of Kansas, Lawrence, KS, United States
| | - Damjana V. Cabarkapa
- Jayhawk Athletic Performance Laboratory—Wu Tsai Human Performance Alliance, Department of Health, Sport and Exercise Sciences, University of Kansas, Lawrence, KS, United States
| | - Jelena Aleksic
- Faculty of Sport and Physical Education, University of Belgrade, Belgrade, Serbia
| | - Angeleau A. Scott
- Jayhawk Athletic Performance Laboratory—Wu Tsai Human Performance Alliance, Department of Health, Sport and Exercise Sciences, University of Kansas, Lawrence, KS, United States
| | - Andrew C. Fry
- Jayhawk Athletic Performance Laboratory—Wu Tsai Human Performance Alliance, Department of Health, Sport and Exercise Sciences, University of Kansas, Lawrence, KS, United States
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Collings TJ, Lima YL, Dutaillis B, Bourne MN. Concurrent validity and test-retest reliability of VALD ForceDecks' strength, balance, and movement assessment tests. J Sci Med Sport 2024:S1440-2440(24)00144-0. [PMID: 38777737 DOI: 10.1016/j.jsams.2024.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 04/26/2024] [Accepted: 04/28/2024] [Indexed: 05/25/2024]
Abstract
OBJECTIVES To evaluate the concurrent validity and test-retest reliability of common movement, strength, and balance tests using portable uniaxial dual force plates. DESIGN Repeated measures cross-sectional study. METHODS Sixteen healthy individuals participated in two testing sessions, where they performed 12 different movement, strength, and balance tests. Vertical ground reaction force and centre of pressure data were collected using the VALD ForceDecks simultaneously with ground-embedded laboratory force plates. Concurrent validity was assessed using root mean square error for raw time-series data and Bland-Altman plots for discrete metrics. Test-retest reliability was assessed using intraclass correlation coefficients and minimal detectable changes. RESULTS ForceDecks recorded vertical ground reaction forces and center of pressure with high accuracy compared to laboratory force plates. The mean bias between systems was negligible (<2 N or 0.1 mm), with small limits of agreement (<5 N or 1 mm). Overall, 530/674 (79%) showed good or excellent validity (<10% difference) and 611/773 (79%) had good or excellent reliability (intraclass correlation coefficient >0.75). ForceDecks reliability was similar to laboratory force plates (<0.07 intraclass correlation coefficient median difference for all metrics). CONCLUSIONS Portable uniaxial force plates record highly accurate vertical ground reaction forces and center of pressure during a range of movement, strength, and balance tests. The VALD ForcDecks are a valid and reliable alternative to laboratory force plates when strict standardized testing and data analysis procedures are followed. Users should be aware of the validity and reliability characteristics of the tests and metrics they choose.
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Affiliation(s)
- Tyler J Collings
- School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia; Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia.
| | - Yuri Lopes Lima
- School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia; Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia. https://twitter.com/YuriLimaPT
| | - Benjamin Dutaillis
- School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia; Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia. https://twitter.com/benji_dutaillis
| | - Matthew N Bourne
- School of Health Sciences and Social Work, Griffith University, Gold Coast Campus, Australia; Griffith Centre of Biomedical and Rehabilitation Engineering (GCORE), Menzies Health Institute Queensland, Griffith University, Gold Coast Campus, Australia. https://twitter.com/MBourne5
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Soriano MA, Paredes V, Comfort P, Jiménez-Ormeño E, Areces-Corcuera F, Giráldez-Costas V, Gallo-Salazar C, Alonso-Aubín DA, Menchén-Rubio M, McMahon JJ. "You Are Not Wrong About Getting Strong:" An Insight Into the Impact of Age Group and Level of Competition on Strength in Spanish Football Players. Int J Sports Physiol Perform 2024:1-8. [PMID: 38648884 DOI: 10.1123/ijspp.2023-0510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/25/2024] [Accepted: 03/03/2024] [Indexed: 04/25/2024]
Abstract
OBJECTIVE This study aimed to compare the maximum and rapid force production of Spanish football players and explore the differences between age group and level of competition. METHODS A cross-sectional study was developed to evaluate the peak force (PF), relative PF, and rate of force development over 250 ms (RFD0-250) during the isometric midthigh pull between groups of football players based on age group (senior vs junior) and level of competition (national vs regional). Using a portable isometric rig, 111 football players performed 2 isometric midthigh-pull trials on a force plate. Two-way analysis of variance with Bonferroni post hoc correction was applied, and statistical significance was set at P ≤ .05. The PF, relative PF, and RFD0-250 0, 25, 50, 75, and 100 percentiles were also calculated and descriptively reported, separated by age group and level of competition. RESULTS The analysis of variance revealed a significant main effect of the level of competition for the PF (P < .001), relative PF (P = .003), and RFD0-250 (P < .001). There was a significant main effect of age group for the PF (P < .001). There was a significant interaction effect of the age group × level of competition for relative PF (P = .014). National players were stronger than regional players on the PF and RFD0-250 (P < .001). Senior players were stronger than junior players for the PF (P < .001). CONCLUSIONS Maximum and rapid force production are crucial for Spanish football players as they progress in both level of competition and age group. Practitioners should encourage young football players to prioritize strength development to improve their athletic performance.
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Affiliation(s)
- Marcos A Soriano
- Grupo de Investigación en Entrenamiento de Fuerza y Rendimiento Neuromuscular (STreNgthP_RG), Facultad HM Hospitales de Ciencias de la Salud de la UCJC, Universidad Camilo José Cela,Madrid, España
- Center for Human Movement and Rehabilitation, University of Salford, Salford, United Kingdom
- Center for Sport Studies, Rey Juan Carlos University,Madrid, Spain
| | - Víctor Paredes
- Grupo de Investigación en Entrenamiento de Fuerza y Rendimiento Neuromuscular (STreNgthP_RG), Facultad HM Hospitales de Ciencias de la Salud de la UCJC, Universidad Camilo José Cela,Madrid, España
| | - Paul Comfort
- Center for Human Movement and Rehabilitation, University of Salford, Salford, United Kingdom
- Strength and Power Research Group, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - Ester Jiménez-Ormeño
- Grupo de Investigación en Entrenamiento de Fuerza y Rendimiento Neuromuscular (STreNgthP_RG), Facultad HM Hospitales de Ciencias de la Salud de la UCJC, Universidad Camilo José Cela,Madrid, España
| | - Francisco Areces-Corcuera
- Grupo de Investigación en Entrenamiento de Fuerza y Rendimiento Neuromuscular (STreNgthP_RG), Facultad HM Hospitales de Ciencias de la Salud de la UCJC, Universidad Camilo José Cela,Madrid, España
| | - Verónica Giráldez-Costas
- Grupo de Investigación en Entrenamiento de Fuerza y Rendimiento Neuromuscular (STreNgthP_RG), Facultad HM Hospitales de Ciencias de la Salud de la UCJC, Universidad Camilo José Cela,Madrid, España
| | - César Gallo-Salazar
- Grupo de Investigación en Entrenamiento de Fuerza y Rendimiento Neuromuscular (STreNgthP_RG), Facultad HM Hospitales de Ciencias de la Salud de la UCJC, Universidad Camilo José Cela,Madrid, España
| | - Diego A Alonso-Aubín
- Grupo de Investigación en Entrenamiento de Fuerza y Rendimiento Neuromuscular (STreNgthP_RG), Facultad HM Hospitales de Ciencias de la Salud de la UCJC, Universidad Camilo José Cela,Madrid, España
| | - María Menchén-Rubio
- Grupo de Investigación en Entrenamiento de Fuerza y Rendimiento Neuromuscular (STreNgthP_RG), Facultad HM Hospitales de Ciencias de la Salud de la UCJC, Universidad Camilo José Cela,Madrid, España
| | - John J McMahon
- Center for Human Movement and Rehabilitation, University of Salford, Salford, United Kingdom
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Merrigan JJ, Stone JD, Kraemer WJ, Vatne EA, Onate J, Hagen JA. Female National Collegiate Athletic Association Division-I Athlete Injury Prediction by Vertical Countermovement Jump Force-Time Metrics. J Strength Cond Res 2024; 38:783-786. [PMID: 38513181 DOI: 10.1519/jsc.0000000000004758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
ABSTRACT Merrigan, JJ, Stone, JD, Kraemer, WJ, Vatne, EA, Onate, J, and Hagen, JA. Female National Collegiate Athletic Association Division-I athlete injury prediction by vertical countermovement jump force-time metrics. J Strength Cond Res 38(4): 783-786, 2024-Vertical countermovement jump (CMJ) assessments on force plates have been purported to screen for musculoskeletal injury risk (MSKI) but with little scientific support. Thus, this study aimed to identify associations and noncontact lower-body injury predictability with CMJ force-time metrics in female athletes. The study entailed a retrospective analysis of routine injury and performance monitoring from 155 female National Collegiate Athletics Association Division I athletes. Noncontact lower-body injuries included in analysis were confirmed by medical staff, occurred during competition or training, resulted in time loss from training, and occurred within 3 months following CMJ testing (2 maximal effort, no arm swing, jumps on dual force plates). A total of 44 injuries occurred within 3 months following CMJ baseline testing and resulted in an average of 24.5 missed days from training. Those who sustained an injury were more likely to sustain another injury (15 of 44 injuries [33.1%]; odds ratio = 3.05 [95% CI = 1.31-6.99]). For every 1-unit increase from the mean in eccentric mean power and minimum eccentric force, there was a decrease in odds of sustaining a MSKI. Despite high overall model accuracy (85.6%), the receiving operating characteristic area under the curve (65.9%) was unacceptable and the true positive rate (recall) was 0.0%. Thus, no injuries in the testing data set were correctly classified by the logistic regression model with CMJ force-time metrics as predictors. Baseline CMJ assessment may not be useful for noncontact lower-body musculoskeletal injury screening or predictability in National Collegiate Athletics Association female athletes.
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Affiliation(s)
- Justin J Merrigan
- Human Performance Collaborative, Office of Research, The Ohio State University, Columbus, Ohio
| | | | - William J Kraemer
- Human Performance Collaborative, Office of Research, The Ohio State University, Columbus, Ohio
- Department of Human Sciences, The Ohio State University, Columbus, Ohio
| | - Emaly A Vatne
- Human Performance Collaborative, Office of Research, The Ohio State University, Columbus, Ohio
| | - James Onate
- James Crane Sports Medicine Research Institute, The Ohio State University, Columbus, Ohio; and
- Division of Athletic Training, School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, Ohio
| | - Josh A Hagen
- Human Performance Collaborative, Office of Research, The Ohio State University, Columbus, Ohio
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Merrigan JJ, Strang A, Eckerle J, Mackowski N, Hierholzer K, Ray NT, Smith R, Hagen JA, Briggs RA. Countermovement Jump Force-Time Curve Analyses: Reliability and Comparability Across Force Plate Systems. J Strength Cond Res 2024; 38:30-37. [PMID: 37815253 DOI: 10.1519/jsc.0000000000004586] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
ABSTRACT Merrigan, JJ, Strang, A, Eckerle, J, Mackowski, N, Hierholzer, K, Ray, NT, Smith, R, Hagen, JA, and Briggs, RA. Countermovement jump force-time curve analyses: reliability and comparability across force plate systems. J Strength Cond Res 38(1): 30-37, 2024-Considering the growing prevalence of commercial force plates providing automated force-time analyses, understanding levels of agreement across force plate systems is warranted. Countermovement jump (CMJ) metrics across Vald ForceDecks (FD), Hawkin Dynamics (HD), and Sparta Science (SS) force plate systems were compared. Twenty-two subjects completed CMJ testing (∼128 comparisons) on each force plate system separately with rest between jumps. Baseline testing occurred 3 times and demonstrated poor test-retest reliability for modified reactive strength index (mRSI) and rate of force development (RFD). ForceDecks and HD comparisons yielded acceptable agreement for concentric/propulsive relative force and net impulse, jump height, eccentric/braking RFD, and mRSI, but systematic and proportionate bias existed for RFD. Sparta Science jump height and reactive strength index (RSI) demonstrated systematic overestimations compared with HD and FD, but jump height had acceptable agreement according to concordance correlation coefficients (CCC = 0.92-0.95). Agreement between SS load (eccentric RFD) and HD braking RFD was acceptable (CCC = 0.91), whereas agreement between SS load and FD deceleration RFD was considered acceptable (CCC = 0.81-0.87) but demonstrated systematic and proportionate bias. ForceDecks (CCC = 0.89) and HD (CCC = 0.85) average relative concentric/propulsive force yielded acceptable agreement with SS explode (average relative concentric force), but SS explode demonstrated systematically lower values than FD and HD. Sparta Science drive (concentric impulse) yielded acceptable agreement with HD relative propulsive impulse (CCC = 0.85), but not FD concentric impulse. Human performance practitioners need to be aware of inconsistencies among testing procedures and analyses across force plate systems, such as differences in metric definitions and units of measurement, before making comparisons across systems.
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Affiliation(s)
- Justin J Merrigan
- STRONG Lab, Air Force Research Laboratory, Wright-Patterson Air Force Base (WPAFB), Ohio
- Human Performance Collaborative, Office of Research, The Ohio State University, Ohio; and
| | - Adam Strang
- STRONG Lab, Air Force Research Laboratory, Wright-Patterson Air Force Base (WPAFB), Ohio
| | - Jason Eckerle
- STRONG Lab, Air Force Research Laboratory, Wright-Patterson Air Force Base (WPAFB), Ohio
| | - Nick Mackowski
- STRONG Lab, Air Force Research Laboratory, Wright-Patterson Air Force Base (WPAFB), Ohio
| | - Kaela Hierholzer
- STRONG Lab, Air Force Research Laboratory, Wright-Patterson Air Force Base (WPAFB), Ohio
| | - Nicole T Ray
- STRONG Lab, Air Force Research Laboratory, Wright-Patterson Air Force Base (WPAFB), Ohio
- Infoscitex, Inc., WPAFB, Ohio
| | - Roger Smith
- STRONG Lab, Air Force Research Laboratory, Wright-Patterson Air Force Base (WPAFB), Ohio
| | - Joshua A Hagen
- STRONG Lab, Air Force Research Laboratory, Wright-Patterson Air Force Base (WPAFB), Ohio
- Human Performance Collaborative, Office of Research, The Ohio State University, Ohio; and
| | - Robert A Briggs
- STRONG Lab, Air Force Research Laboratory, Wright-Patterson Air Force Base (WPAFB), Ohio
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McMahon JJ, Ripley NJ, Comfort P, Robles-Palazón FJ, Fahey JT, Badby AJ, Bramah C. The Kneeling Isometric Plantar Flexor Test: Preliminary Reliability and Feasibility in Professional Youth Football. J Funct Morphol Kinesiol 2023; 8:164. [PMID: 38132719 PMCID: PMC10744255 DOI: 10.3390/jfmk8040164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/20/2023] [Accepted: 11/28/2023] [Indexed: 12/23/2023] Open
Abstract
Calf injuries are common in professional football; thus, the establishment of reliable and time-efficient methods of measuring the peak force capabilities of the plantar flexors with equipment that is accessible to football practitioners is valuable. In this study, we determined the preliminary reliability and feasibility of a new test, termed the kneeling isometric plantar flexion test (KIPFT), for footballers. Twenty-one male youth footballers (age = 17.8 ± 1.1 years, height = 182 ± 5 cm, weight = 77.6 ± 5.9 kg) from English League One football clubs completed three trials of the KIPFT on a wireless force plate at the end (2022-2023) and start (2023-2024) of the season. The within-session reliability of the peak force (relative to body weight) was good-excellent for both limbs and both occasions. On average, performance of the KIPFT took just over 1 min per limb and ~2 min to set up. The peak force values were larger for the non-dominant limbs only at the start versus the end of the season, but there were no between-limb differences. From these results, it was determined that (1) the KIPFT is feasible, (2) a minimum of 32 footballers would be required to establish its between-session reliability with ≥80% statistical power and (3) large-cohort normative data for the KIPFT may be best collected at the start of the football season.
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Affiliation(s)
- John J. McMahon
- Centre for Human Movement and Rehabilitation Research, University of Salford, Salford M6 6PU, UK; (N.J.R.); (P.C.); (F.J.R.-P.); (J.T.F.); (A.J.B.); (C.B.)
| | - Nicholas J. Ripley
- Centre for Human Movement and Rehabilitation Research, University of Salford, Salford M6 6PU, UK; (N.J.R.); (P.C.); (F.J.R.-P.); (J.T.F.); (A.J.B.); (C.B.)
| | - Paul Comfort
- Centre for Human Movement and Rehabilitation Research, University of Salford, Salford M6 6PU, UK; (N.J.R.); (P.C.); (F.J.R.-P.); (J.T.F.); (A.J.B.); (C.B.)
- Centre for Exercise and Sport Science Research, Edith Cowan University, Joondalup, WA 6027, Australia
| | - Francisco Javier Robles-Palazón
- Centre for Human Movement and Rehabilitation Research, University of Salford, Salford M6 6PU, UK; (N.J.R.); (P.C.); (F.J.R.-P.); (J.T.F.); (A.J.B.); (C.B.)
- Department of Physical Activity and Sport, Faculty of Sport Sciences, Campus of Excellence Mare Nostrum, University of Murcia, 30720 Murcia, Spain
| | - Jack T. Fahey
- Centre for Human Movement and Rehabilitation Research, University of Salford, Salford M6 6PU, UK; (N.J.R.); (P.C.); (F.J.R.-P.); (J.T.F.); (A.J.B.); (C.B.)
| | - Andrew J. Badby
- Centre for Human Movement and Rehabilitation Research, University of Salford, Salford M6 6PU, UK; (N.J.R.); (P.C.); (F.J.R.-P.); (J.T.F.); (A.J.B.); (C.B.)
| | - Christopher Bramah
- Centre for Human Movement and Rehabilitation Research, University of Salford, Salford M6 6PU, UK; (N.J.R.); (P.C.); (F.J.R.-P.); (J.T.F.); (A.J.B.); (C.B.)
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Robles-Palazón FJ, Comfort P, Ripley NJ, Herrington L, Bramah C, McMahon JJ. Force plate methodologies applied to injury profiling and rehabilitation in sport: A scoping review protocol. PLoS One 2023; 18:e0292487. [PMID: 37812631 PMCID: PMC10561863 DOI: 10.1371/journal.pone.0292487] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 09/19/2023] [Indexed: 10/11/2023] Open
Abstract
Musculoskeletal injuries are a common health problem among sporting populations. Such injuries come with a high financial burden to the involved organisations and can have a detrimental impact on the career attainment of injured individuals. Force plates are now a common tool available to sport and exercise science and medicine professionals to enable them to profile injury risk predisposition and modulate the rehabilitation process within sporting environments. This is because contemporary force plate technology is portable and affordable and often comes with software that enables the automatic and immediate feedback of test variables to key stakeholders. However, to our knowledge, to date, there has been no comprehensive review of the scientific literature pertaining to clinical applications of force plate technology. Therefore, this article presents a protocol and a methodological framework to perform a scoping review to identify and map the available scientific literature in which force plates have been applied to the injury profiling and rehabilitation of athletes. The specific aims of the scoping review are 1) to identify and describe the force plate tests, methodologies, and metrics used to screen for injury risk and guide the return of injured athletes to full-time training and competition, 2) to identify potential trends and/or differences by participants' age, sex, and/or level of performance in tests, methodologies, and metrics selected, and 3) to identify key gaps in the existing evidence base and new questions that should be addressed in future research. The global aim of the scoping review is to improve practitioner decision-making around force plate test and variable selection when applied to the injury prevention and rehabilitation of sporting populations.
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Affiliation(s)
- Francisco Javier Robles-Palazón
- Centre for Human Movement and Rehabilitation, University of Salford, Salford, United Kingdom
- Faculty of Sport Sciences, Department of Physical Activity and Sport, Campus of Excellence Mare Nostrum, University of Murcia, Murcia, Spain
| | - Paul Comfort
- Centre for Human Movement and Rehabilitation, University of Salford, Salford, United Kingdom
- Centre for Exercise and Sport Science Research, Edith Cowan University, Joondalup, WA, Australia
| | - Nicholas J. Ripley
- Centre for Human Movement and Rehabilitation, University of Salford, Salford, United Kingdom
| | - Lee Herrington
- Centre for Human Movement and Rehabilitation, University of Salford, Salford, United Kingdom
| | - Christopher Bramah
- Centre for Human Movement and Rehabilitation, University of Salford, Salford, United Kingdom
| | - John J. McMahon
- Centre for Human Movement and Rehabilitation, University of Salford, Salford, United Kingdom
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Badby AJ, Mundy PD, Comfort P, Lake JP, McMahon JJ. The Validity of Hawkin Dynamics Wireless Dual Force Plates for Measuring Countermovement Jump and Drop Jump Variables. SENSORS (BASEL, SWITZERLAND) 2023; 23:4820. [PMID: 37430733 DOI: 10.3390/s23104820] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/06/2023] [Accepted: 05/15/2023] [Indexed: 07/12/2023]
Abstract
Force plate testing is becoming more commonplace in sport due to the advent of commercially available, portable, and affordable force plate systems (i.e., hardware and software). Following the validation of the Hawkin Dynamics Inc. (HD) proprietary software in recent literature, the aim of this study was to determine the concurrent validity of the HD wireless dual force plate hardware for assessing vertical jumps. During a single testing session, the HD force plates were placed directly atop two adjacent Advanced Mechanical Technology Inc. in-ground force plates (the "gold standard") to simultaneously collect vertical ground reaction forces produced by 20 participants (27 ± 6 years, 85 ± 14 kg, 176.5 ± 9.23 cm) during the countermovement jump (CMJ) and drop jump (DJ) tests (1000 Hz). Agreement between force plate systems was determined via ordinary least products regression using bootstrapped 95% confidence intervals. No bias was present between the two force plate systems for any of the CMJ and DJ variables, except DJ peak braking force (proportional bias) and DJ peak braking power (fixed and proportional bias). The HD system may be considered a valid alternative to the industry gold standard for assessing vertical jumps because fixed or proportional bias was identified for none of the CMJ variables (n = 17) and only 2 out of 18 DJ variables.
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Affiliation(s)
- Andrew J Badby
- Centre for Human Movement and Rehabilitation, University of Salford, Salford M6 6PU, UK
- Hawkin Dynamics, Inc., Westbrook, ME 04092, USA
| | | | - Paul Comfort
- Centre for Human Movement and Rehabilitation, University of Salford, Salford M6 6PU, UK
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA 6027, Australia
| | - Jason P Lake
- Hawkin Dynamics, Inc., Westbrook, ME 04092, USA
- Chichester Institute of Sport, University of Chichester, Chichester PO19 6PE, UK
| | - John J McMahon
- Centre for Human Movement and Rehabilitation, University of Salford, Salford M6 6PU, UK
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