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Jiang X, Xu D, Fang Y, Bíró I, Baker JS, Gu Y. PCA of Running Biomechanics after 5 km between Novice and Experienced Runners. Bioengineering (Basel) 2023; 10:876. [PMID: 37508903 PMCID: PMC10376576 DOI: 10.3390/bioengineering10070876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/09/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
Increased running experience appears to lower the risk of running-related injuries, but the mechanisms underlying this are unknown. Studying the biomechanics of runners with different running experiences before and after long-distance running can improve our understanding of the relationship between faulty running mechanics and injury. The purpose of the present study was to investigate if there were any differences in lower-limb biomechanics between runners after a 5 km run. Biomechanical data were collected from 15 novice and 15 experienced runners. Principal component analysis (PCA) with single-component reconstruction was used to identify variations in running biomechanics across the gait waveforms. A two-way repeated-measures ANOVA was conducted to explore the effects of runner and a 5 km run. Significant runner group differences were found for the kinematics and kinetics of lower-limb joints and ground reaction force (GRF) with respect to the magnitude across the stance phase. We found that novice runners exhibited greater changes in joint angles, joint moments, and GRFs than experienced runners regardless of the prolonged running session, and those patterns may relate to lower-limb injuries. The results of this study suggest that the PCA approach can provide unique insight into running biomechanics and injury mechanisms. The findings from the study could potentially guide training program developments and injury prevention protocols for runners with different running experiences.
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Affiliation(s)
- Xinyan Jiang
- Research Academy of Medicine Combining Sports, Ningbo No. 2 Hospital, Ningbo 315010, China
- Faculty of Sports Science, Ningbo University, Ningbo 315211, China
- Doctoral School on Safety and Security Sciences, Obuda University, 1034 Budapest, Hungary
- Faculty of Engineering, University of Szeged, 6720 Szeged, Hungary
| | - Datao Xu
- Research Academy of Medicine Combining Sports, Ningbo No. 2 Hospital, Ningbo 315010, China
- Faculty of Sports Science, Ningbo University, Ningbo 315211, China
- Faculty of Engineering, University of Pannonia, 8201 Veszprém, Hungary
| | - Yufei Fang
- Research Academy of Medicine Combining Sports, Ningbo No. 2 Hospital, Ningbo 315010, China
| | - István Bíró
- Doctoral School on Safety and Security Sciences, Obuda University, 1034 Budapest, Hungary
- Faculty of Engineering, University of Szeged, 6720 Szeged, Hungary
| | - Julien S Baker
- Department of Sport, Physical Education and Health, Hong Kong Baptist University, Hong Kong, China
| | - Yaodong Gu
- Research Academy of Medicine Combining Sports, Ningbo No. 2 Hospital, Ningbo 315010, China
- Faculty of Sports Science, Ningbo University, Ningbo 315211, China
- Department of Radiology, Ningbo No. 2 Hospital, Ningbo 315010, China
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Foch E, Brindle RA, Pohl MB. Lower extremity kinematics during running and hip abductor strength in iliotibial band syndrome: A systematic review and meta-analysis. Gait Posture 2023; 101:73-81. [PMID: 36758425 DOI: 10.1016/j.gaitpost.2023.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 01/26/2023] [Accepted: 02/01/2023] [Indexed: 02/11/2023]
Abstract
BACKGROUND Iliotibial band syndrome is a common overuse injury that is twice as likely to affect female runners compared to male runners. It is unclear if there is a consistent running pattern and strength profile exhibited by female and male runners with iliotibial band syndrome. RESEARCH QUESTION The purpose of this systematic review and meta-analysis was to determine if any differences existed in lower-extremity kinematics and hip strength between runners who retrospectively, currently, or prospectively had iliotibial band syndrome. METHODS Papers included must have reported three-dimensional kinematic running data and/or hip strength data that were statistically analyzed between runners that never developed iliotibial band syndrome and runners with iliotibial band syndrome. Meta-analysis was performed for each kinematic or strength variable reported in at least three studies. Female and male runners were analyzed separately and grouped into three cohorts (retrospective, current, prospective). RESULTS Seventeen articles were included in this systematic review. Data from 10 cross-sectional studies were included for meta-analysis. Female runners with current iliotibial band syndrome exhibited smaller peak hip internal rotation angles and lower isometric hip abductor strength compared to controls. SIGNIFICANCE Although limited biomechanical evidence exists, risk factors for ITBS are different between female and male runners and may vary according to injury status. Specifically, transverse plane hip motion and hip abductor strength weakness may be biomechanical risk factors in female runners with current iliotibial band syndrome only.
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Affiliation(s)
- Eric Foch
- Department of Health Sciences, Central Washington University, Ellensburg, WA, USA.
| | | | - Michael B Pohl
- Department of Exercise Science, University of Puget Sound, Tacoma, WA, USA
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The Effects of Cadence Manipulation on Joint Kinetic Patterns and Stride-to-Stride Kinetic Variability in Female Runners. J Appl Biomech 2022; 38:373-381. [PMID: 36126939 DOI: 10.1123/jab.2022-0077] [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: 03/29/2022] [Revised: 07/18/2022] [Accepted: 08/15/2022] [Indexed: 11/18/2022]
Abstract
Altering running cadence is commonly done to reduce the risk of running-related injury/reinjury. This study examined how altering running cadence affects joint kinetic patterns and stride-to-stride kinetic variability in uninjured female runners. Twenty-four uninjured female recreational runners ran on an instrumented treadmill with their typical running cadence and with a running cadence that was 7.5% higher and 7.5% lower than typical. Ground reaction force and kinematic data were recorded during each condition, and principal component analysis was used to capture the primary sources of variability from the sagittal plane hip, knee, and ankle moment time series. Runners exhibited a reduction in the magnitude of their knee extension moments when they increased their cadence and an increase in their knee extension moments when they lowered their cadence compared with when they ran with their typical cadence. They also exhibited greater stride-to-stride variability in the magnitude of their hip flexion moments and knee extension moments when they deviated from their typical running cadence (ie, running with either a higher or lower cadence). These differences suggest that runners could alter their cadence throughout a run in an attempt to limit overly repetitive localized tissue stresses.
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Willwacher S, Kurz M, Robbin J, Thelen M, Hamill J, Kelly L, Mai P. Running-Related Biomechanical Risk Factors for Overuse Injuries in Distance Runners: A Systematic Review Considering Injury Specificity and the Potentials for Future Research. Sports Med 2022; 52:1863-1877. [PMID: 35247202 PMCID: PMC9325808 DOI: 10.1007/s40279-022-01666-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2022] [Indexed: 01/25/2023]
Abstract
BACKGROUND Running overuse injuries (ROIs) occur within a complex, partly injury-specific interplay between training loads and extrinsic and intrinsic risk factors. Biomechanical risk factors (BRFs) are related to the individual running style. While BRFs have been reviewed regarding general ROI risk, no systematic review has addressed BRFs for specific ROIs using a standardized methodology. OBJECTIVE To identify and evaluate the evidence for the most relevant BRFs for ROIs determined during running and to suggest future research directions. DESIGN Systematic review considering prospective and retrospective studies. (PROSPERO_ID: 236,832). DATA SOURCES PubMed. Connected Papers. The search was performed in February 2021. ELIGIBILITY CRITERIA English language. Studies on participants whose primary sport is running addressing the risk for the seven most common ROIs and at least one kinematic, kinetic (including pressure measurements), or electromyographic BRF. A BRF needed to be identified in at least one prospective or two independent retrospective studies. BRFs needed to be determined during running. RESULTS Sixty-six articles fulfilled our eligibility criteria. Levels of evidence for specific ROIs ranged from conflicting to moderate evidence. Running populations and methods applied varied considerably between studies. While some BRFs appeared for several ROIs, most BRFs were specific for a particular ROI. Most BRFs derived from lower-extremity joint kinematics and kinetics were located in the frontal and transverse planes of motion. Further, plantar pressure, vertical ground reaction force loading rate and free moment-related parameters were identified as kinetic BRFs. CONCLUSION This study offers a comprehensive overview of BRFs for the most common ROIs, which might serve as a starting point to develop ROI-specific risk profiles of individual runners. We identified limited evidence for most ROI-specific risk factors, highlighting the need for performing further high-quality studies in the future. However, consensus on data collection standards (including the quantification of workload and stress tolerance variables and the reporting of injuries) is warranted.
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Affiliation(s)
- Steffen Willwacher
- grid.440974.a0000 0001 2234 6983Department for Mechanical and Process Engineering, Offenburg University of Applied Sciences, Offenburg, Germany ,grid.27593.3a0000 0001 2244 5164Institute for Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany
| | - Markus Kurz
- grid.29050.3e0000 0001 1530 0805Department of Quality Technology & Mechanical Engineering, Mid Sweden University, Östersund, Sweden
| | - Johanna Robbin
- grid.440974.a0000 0001 2234 6983Department for Mechanical and Process Engineering, Offenburg University of Applied Sciences, Offenburg, Germany ,grid.27593.3a0000 0001 2244 5164Institute for Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany
| | - Matthias Thelen
- grid.27593.3a0000 0001 2244 5164Institute for Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany
| | - Joseph Hamill
- grid.266683.f0000 0001 2166 5835Biomechanics Laboratory, University of Massachusetts, Amherst, MA USA
| | - Luke Kelly
- grid.1003.20000 0000 9320 7537School of Human Movement and Nutrition Sciences, University of Queensland, St. Lucia, QLD Australia
| | - Patrick Mai
- grid.440974.a0000 0001 2234 6983Department for Mechanical and Process Engineering, Offenburg University of Applied Sciences, Offenburg, Germany ,grid.27593.3a0000 0001 2244 5164Institute for Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany
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Almonroeder TG, Harding L, Seubert B, Cowley H, Kernozek T. The effects of incremental changes in rucksack load on lower extremity joint Kinetic patterns during ruck marching. ERGONOMICS 2021; 64:971-982. [PMID: 33688792 DOI: 10.1080/00140139.2021.1893391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
Injuries are often attributed to ruck marching. Therefore, it is important to examine how load carriage influences gait mechanics. The purpose of this study was to examine how subtle changes in rucksack load influence joint torque patterns during marching. Fourteen Army ROTC cadets marched with light, moderate, and heavy rucksack loads. Kinetic and kinematic data were recorded via an instrumented treadmill and motion capture system and principal component analysis was used to analyse the joint torque waveforms. Cadets exhibited moderate-large increases in knee extension torques during early stance (effect sizes ≥0.45) and small-moderate increases in ankle plantarflexion torques during push off (effect sizes ≥0.23) with each incremental increase in rucksack load. The lighter load also resulted in lower hip extension torques during early stance and flexion torques during late stance, vs. the moderate and heavier loads (effect sizes ≥0.23). It appears that subtle changes in rucksack load influence marching mechanics. Practitioner Summary: The purpose of this study was to examine how relatively subtle changes in rucksack load influence marching mechanics. Army ROTC cadets marched with relatively light, moderate, and heavy rucksack loads. Our results indicate that even subtle changes in rucksack load influence joint torque patterns of the hip, knee, and ankle. Abbreviations: ROTC: reserve officer training corps; RoF: rating-of-fatigue; PC: principal component; ICC: intraclass correlation coefficient; ES: effect size.
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Affiliation(s)
- Thomas Gus Almonroeder
- Department of Health Professions, Physical Therapy Program, University of Wisconsin - La Crosse, La Crosse, WI, USA
| | - Lauren Harding
- Department of Health Professions, Physical Therapy Program, University of Wisconsin - La Crosse, La Crosse, WI, USA
| | - Brooke Seubert
- Department of Health Professions, Physical Therapy Program, University of Wisconsin - La Crosse, La Crosse, WI, USA
| | - Hanni Cowley
- Department of Health Professions, Physical Therapy Program, University of Wisconsin - La Crosse, La Crosse, WI, USA
| | - Thomas Kernozek
- Department of Health Professions, Physical Therapy Program, University of Wisconsin - La Crosse, La Crosse, WI, USA
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Bramah C, Preece SJ, Gill N, Herrington L. The between-day repeatability, standard error of measurement and minimal detectable change for discrete kinematic parameters during treadmill running. Gait Posture 2021; 85:211-216. [PMID: 33610824 DOI: 10.1016/j.gaitpost.2020.12.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 12/03/2020] [Accepted: 12/30/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Kinematic parameters of the trunk, pelvis and lower limbs are frequently associated with both running injuries and performance, and the target of clinical interventions. Currently there is limited evidence reporting the between-day repeatability of discrete kinematic parameters of the trunk, pelvis and lower limbs during treadmill running. RESEARCH QUESTION What is the between-day repeatability, standard error of measurement and minimal detectable change of discrete kinematic parameters of the trunk, pelvis and lower limbs during treadmill running? METHODS 16 healthy participants attended two kinematic data collection sessions two weeks apart. Three-dimensional kinematic data were collected while participants ran on a motorised treadmill at 3.2 m/s. The interclass correlation coefficient, standard error of measurement and minimal detectable change were calculated for discrete kinematic parameters at initial contact, toe off, peak angles and joint excursions during the stance phase of running. RESULTS Good to excellent repeatability with low standard error of measurement and minimal detectable change values were observed for sagittal and frontal plane kinematics at initial contact (Range: ICC, 0.829-0.941; SEM, 0.6°- 2.6°; MDC, 1.5°- 7.2) and peak angles during stance (Range: ICC, 0.799 - 0.946; SEM, 0.6°- 2.6°; MDC, 1.7°- 7.1°). Peak transverse plane kinematics of the hip (ICC, 0.783; SEM, 3.2°; MDC, 8.7°) and knee (ICC, 0.739; SEM, 3°; MDC, 8.4°) demonstrated moderate between-day repeatability with large SEM and MDC values. Kinematics at toe off demonstrated the lowest ICC values and largest measurement errors of all parameters (Range: ICC, 0.109 - 0.900; SEM, 0.8°- 5.7°; MDC, 2.5°- 15.7°). SIGNIFICANCE This is the first study detailing the measurement error and minimal detectable change for discrete kinematic parameters of the trunk and pelvis during treadmill running. The reported values may provide a useful reference point for future studies investigating between-day differences in running kinematics.
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Affiliation(s)
- Christopher Bramah
- School of Health & Society, Health Sciences Research Centre, University of Salford, Salford, Manchester, M6 6PU, United Kingdom.
| | - Stephen J Preece
- School of Health & Society, Health Sciences Research Centre, University of Salford, Salford, Manchester, M6 6PU, United Kingdom
| | - Niamh Gill
- School of Health & Society, Health Sciences Research Centre, University of Salford, Salford, Manchester, M6 6PU, United Kingdom
| | - Lee Herrington
- School of Health & Society, Health Sciences Research Centre, University of Salford, Salford, Manchester, M6 6PU, United Kingdom
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Effects of iliotibial band syndrome on pain sensitivity and gait kinematics in female runners: A preliminary study. Clin Biomech (Bristol, Avon) 2020; 76:105017. [PMID: 32388078 DOI: 10.1016/j.clinbiomech.2020.105017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 11/22/2019] [Accepted: 04/21/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Runners with iliotibial band syndrome display symptoms similar to chronic tendinopathy and distinct gait patterns compared to healthy controls. Although altered pain processing has been demonstrated in chronic tendinopathies, central pain processing and its relationship to motor control has not been measured in iliotibial band syndrome. The purpose of this study was to examine pain sensitivity, hip strength, and gait kinematics in runners with and without iliotibial band syndrome. METHODS Nine female runners with iliotibial band syndrome and eight healthy controls participated. Subjective pain was reported and pressure pain threshold measured at the bilateral foot, tibialis anterior, contralateral hand. Isometric hip strength was assessed. Three-dimensional joint angles were collected while running. Differences in pain and strength were determined using 1-way ANOVAs. Discrete hip and knee joint angles during stance phase were calculated and waveform analysis performed. FINDINGS Runners with iliotibial band syndrome exhibited bilaterally diminished pain at the foot (injured-limb: 1.54 (SD = 0.51); non-injured limb: 1.54 (SD = 0.55); control: 4.01 (SD = 2.30) kg, P < .001) and ipsilateral tibialis anterior (injured-limb: 2.33 (SD = 1.10); control: 6.13 (SD = 4.89) kg, P = .03). Hip strength was not different between groups. Runners with iliotibial band syndrome had greater hip adduction at touchdown, knee internal rotation during loading, and knee abduction and flexion at toe-off than controls. INTERPRETATION Runners with iliotibial band syndrome demonstrated expanded somatic pain sensitivity without hip strength differences, but concomitant with altered gait patterns. Bilateral pain symptoms and gait deviations exist in runners with iliotibial band syndrome even with unilateral symptoms, highlighting the importance of bilateral assessment.
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Shen P, Mao D, Zhang C, Sun W, Song Q. Effects of running biomechanics on the occurrence of iliotibial band syndrome in male runners during an eight-week running programme-a prospective study. Sports Biomech 2019; 20:560-570. [PMID: 30973056 DOI: 10.1080/14763141.2019.1584235] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Iliotibial band syndrome (ITBS) is a common injury that is related to running biomechanics. This study aimed to determine the gait characteristics that easily induce ITBS and explore the gait changes after the occurrence of ITBS. Thirty healthy male recreational runners participated in our study. Amongst them, 15 developed ITBS and comprised the ITBS group; the other 15 were healthy and comprised the control group. All participants underwent two gait trials, namely, before the first day of their running and after eight weeks, during which a force platform and a motion capture system collected biomechanical data. After running, the ITBS group exhibited greater anterior pelvic tilt and hip flexion angle than the control group. The ITBS group showed increased trunk inclination angle, whereas the control group demonstrated lower hip flexion, hip adduction angle and hip abductor moment than those at the beginning of running. Decreasing hip flexion, adduction angle and abductor moment may be a reasonable strategy to avoid the occurrence of ITBS. The occurrence of ITBS may be due to the lack of timely gait adjustment. Excessive trunk inclination and anterior pelvic tilt angle may be risks factor in the development of ITBS during running.
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Affiliation(s)
| | - Dewei Mao
- Shandong Sport University, Jinan, China
| | - Cui Zhang
- Shandong Institute of Sport Science, Jinan, China
| | - Wei Sun
- Shandong Institute of Sport Science, Jinan, China
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Brown AM, Zifchock RA, Lenhoff M, Song J, Hillstrom HJ. Hip muscle response to a fatiguing run in females with iliotibial band syndrome. Hum Mov Sci 2019; 64:181-190. [PMID: 30743163 DOI: 10.1016/j.humov.2019.02.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 12/20/2018] [Accepted: 02/05/2019] [Indexed: 12/29/2022]
Abstract
Impaired hip muscle function has often been cited as a contributing factor to the development of iliotibial band syndrome (ITBS), yet our full understanding of this relationship is not well established. The objective of this study was to examine the effect of fatigue on hip abductor muscle function in females with ITBS. Female runners, 20 healthy and 12 with a current diagnosis of ITBS, performed a treadmill run to fatigue. Prior-to and following the run to fatigue, gluteus medius strength and median frequency values (an indicator of fatigue resistance) were measured. Additionally, onset activation timing of the gluteus medius and tensor fascia latae was measured during overground running. Both healthy and injured runners demonstrated decreased gluteus medius strength following the run to fatigue (p = 0.01), but there was no interaction between groups (p = 0.78). EMG onset activation timing did not differ between groups for the gluteus medius (P = 0.19) and tensor fascia latae muscles (P = 0.52). Injured runners demonstrated decreased gluteus medius initial median frequency values suggestive of fatigue (P = 0.01). These findings suggest that the gluteus medius muscle of female runners with ITBS does not demonstrate gross strength impairments but does demonstrate less resistance to fatigue. Clinicians should consider implementation of a gluteus medius endurance training regimen into a runner's rehabilitation program.
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Affiliation(s)
- Allison M Brown
- Department of Rehabilitation and Movement Sciences, Rutgers Biomedical and Health Sciences, 65 Bergen Street, Newark, NJ 07107, USA; Leon Root, MD Motion Analysis Laboratory, Hospital for Special Surgery, 510 East 73rd Street, New York, NY 10021, USA.
| | - Rebecca A Zifchock
- Department of Civil & Mechanical Engineering, United States Military Academy, West Point, NY 10996, USA
| | - Mark Lenhoff
- Leon Root, MD Motion Analysis Laboratory, Hospital for Special Surgery, 510 East 73rd Street, New York, NY 10021, USA
| | - Jinsup Song
- Gait Study Center, School of Podiatric Medicine, Temple University, 148 North 8th Street, Philadelphia, PA 19107, USA
| | - Howard J Hillstrom
- Leon Root, MD Motion Analysis Laboratory, Hospital for Special Surgery, 510 East 73rd Street, New York, NY 10021, USA
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Kinematic risk factors for lower limb tendinopathy in distance runners: A systematic review and meta-analysis. Gait Posture 2019; 69:13-24. [PMID: 30658311 DOI: 10.1016/j.gaitpost.2019.01.011] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/05/2018] [Accepted: 01/09/2019] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Abnormal kinematics have been implicated as one of the major risk factors for lower limb tendinopathy (LLT). OBJECTIVE To systematically review evidence for kinematic risk factors for LLT in runners. METHODS Individual electronic searches in PubMed, EMBASE and Web of Science were conducted. Two reviewers screened studies to identify observational studies reporting kinematic risk factors in runners with LLT compared to healthy controls. The Down and Black appraisal scale was applied to assess quality. A meta-analysis was performed provided that at least two studies with similar methodology reported the same factor. RESULTS Twenty-eight studies were included: Achilles tendinopathy (AT) (9), iliotibial band syndrome (ITBS) (17), plantar fasciopathy (PF) (2), patellar tendinopathy (PT) (1), posterior tibial tendon dysfunction (PTTD) (1). Eighteen studies were rated high-quality and ten medium-quality. The meta-analyses revealed strong evidence of higher peak knee internal rotation, moderate evidence of lower peak rearfoot eversion and knee flexion at heel strike and greater peak hip adduction in runners with ITBS. Very limited evidence revealed higher peak ankle eversion in runners with PF and PTTD or higher peak hip adduction in PT. SIGNIFICANCE Peak rearfoot eversion was the only factor reported in all included LLTs; it is a significant factor in ITBS, PT and PTTD but not in AT and PF. More prospective studies are needed to accurately evaluate the role of kinematic risk factors as a cause of LLT. Taken together, addressing rearfoot kinematic and kinematic chain movements accompanied by peak eversion should be considered in the prevention and management of LLT.
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The effect of different running shoes on treadmill running mechanics and muscle activity assessed using statistical parametric mapping (SPM). Gait Posture 2019; 69:1-7. [PMID: 30658310 DOI: 10.1016/j.gaitpost.2019.01.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 12/19/2018] [Accepted: 01/09/2019] [Indexed: 02/02/2023]
Abstract
BACKGROUND Differences in joint mechanics between running shoes are commonly assessed using discrete parameters, yet statistically significant differences in these parameters between shoes are often scarce with small effect sizes. Statistical parametric mapping (SPM) has been suggested as suitable method for analyzing one-dimensional data such as kinematic, kinetic or muscle intensity time series. RESEARCH QUESTION The purpose of this study was to determine differences in treadmill running mechanics between novel running shoes using SPM. METHODS Joint kinematics, muscle activity and ground reaction force were assessed in 19 rearfoot runners in their own shoes and in two test shoes during treadmill running (test shoe 1: 13 distinct rubber elements in the outer sole, springboard within EVA midsole with posterior elements shifted anteriorly by approximately 1.5 cm; test shoe 2: 17 distinct EVA elements with conventional heel geometry). Joint kinematics were measured using an inertial sensor system, and ground reaction force was measured using an instrumented treadmill. RESULTS SPM analysis with repeated measures ANOVA revealed significant reductions in the ankle angle and in tibialis anterior, peroneus longus, vastus medialis and lateralis muscle activity during weight acceptance and in peroneus longus muscle activity during early and late swing and in semitendinosus muscle activity during late swing for the test shoes. Significant differences in muscle activity were observed in the interval of the main activity of the respective muscle. SPM on individual data revealed statistically significant and relevant within-subject differences between conditions in kinematic, muscle activity and ground reaction force patterns. SIGNIFICANCE Inertial sensor systems and SPM may provide an efficient way of detecting changes in joint mechanics between running shoes within runners. Detecting within-subject differences in running mechanics between conditions not only requires statistical criteria but also criteria on the relevance of the magnitude of differences.
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12
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Christopher SM, McCullough J, Snodgrass SJ, Cook C. Do alterations in muscle strength, flexibility, range of motion, and alignment predict lower extremity injury in runners: a systematic review. Arch Physiother 2019; 9:2. [PMID: 30805204 PMCID: PMC6373037 DOI: 10.1186/s40945-019-0054-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 01/20/2019] [Indexed: 12/29/2022] Open
Abstract
Background Injury is common in running and seen to impact up to 94% of recreational runners. Clinicians often use alterations from normal musculoskeletal clinical assessments to assess for risk of injury, but it is unclear if these assessments are associated with future injury. Objectives To identify alterations in muscle strength, flexibility, range of motion, and alignment that may predict lower extremity injury in runners. Methods Articles were selected following a comprehensive search of PubMed, Embase, CINAHL, and SPORTDiscus from database inception to May 2018. Included articles were prospective cohort studies, which specifically analyzed musculoskeletal impairments associated with future running-related injury. Two authors extracted study data, assessed the methodological quality of each study using the Critical Appraisal Tool and assessed the overall quality using the GRADE approach. Results Seven articles met the inclusion criteria. There was very low quality of evidence for the 7 identified clinical assessment alteration categories. Strong hip abductors were significantly associated with running-related injury in one study. Increased hip external-to-internal rotation strength and decreased hip internal range of motion were protective for running injury, each in one study. Decreased navicular drop in females had a protective effect for running-related injury in one study. Conclusions Due to very low quality of evidence for each assessment, confounders present within the studies, a limited number of studies, different measurement methods among studies, measurement variability within clinical assessments, inconsistent definitions of injury and runner, different statistical modeling, and study bias, caution is suggested in interpreting these results.
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Affiliation(s)
- Shefali M Christopher
- 1Department of physical therapy Education, Elon University, Elon, NC 27244 USA.,2School of Health Sciences, The University of Newcastle, Callaghan, Australia
| | | | - Suzanne J Snodgrass
- 2School of Health Sciences, The University of Newcastle, Callaghan, Australia
| | - Chad Cook
- 4Division of Physical Therapy, Duke University, 2200 W. Main Street, Durham, NC 27705 USA
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Kernozek TW, Knaus A, Rademaker T, Almonroeder TG. The effects of habitual foot strike patterns on Achilles tendon loading in female runners. Gait Posture 2018; 66:283-287. [PMID: 30243212 DOI: 10.1016/j.gaitpost.2018.09.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 07/30/2018] [Accepted: 09/10/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND Female runners that habitually use a forefoot/midfoot strike pattern (non-rearfoot runners) may be at greater risk for Achilles tendinopathy compared to runners that habitually use a rearfoot strike pattern. Differences in Achilles tendon loading between non-rearfoot and rearfoot strike runners may be a contributing factor. RESEARCH QUESTION Our purpose was to determine if there were differences in Achilles tendon loading and cross-sectional area between female habitual rearfoot and non-rearfoot strike runners. METHODS Thirty-five female runners participated in this cross-sectional study (17 rearfoot strike runners, 18 non-rearfoot strike runners). Ultrasound images of the Achilles tendon were used to measure cross-sectional area. Kinematic and kinetic data were collected at a set running speed and used in a muscloskeletal model to calculate Achilles tendon force. Achilles tendon stress was determined from specific Achilles tendon cross-sectional area. Principal components (PC) analysis was performed to identify/characterize the primary sources of variability in the Achilles tendon stress time series. The PC scores and cross-sectional area where compared using independent t-tests. RESULTS PC 1 reflected variability in the Achilles tendon stress magnitude from 25 to 100% of stance, PC 2 reflected timing variability, and PC 3 reflected variability in the magnitude during early stance (0-25%). The non-rearfoot strike runners demonstrated higher PC scores for PC 1 and PC 3 compared to the rearfoot strike runners. This reflected greater Achilles tendon stress during mid/late stance (PC 1) and early stance (PC 3) for the non-rearfoot strike runners. For PC 2, there was a trend toward higher PC scores in the non-rearfoot strike runners. Achilles tendon cross-sectional area for the rearfoot and non-rearfoot strike runners were not different. SIGNIFICANCE Habitual non-rearfoot strike runners did not have greater cross-sectional area despite higher Achilles tendon loading, which may pose a higher risk for Achilles tendinopathy.
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Affiliation(s)
- Thomas W Kernozek
- Department of Health Professions, Physical Therapy Program, University of Wisconsin - La Crosse, 1300 Badger Street, La Crosse, WI, United States; La Crosse Institute for Movement Science (LIMS), University of Wisconsin - La Crosse, 1300 Badger Street, La Crosse, WI, United States.
| | - Allie Knaus
- Department of Health Professions, Physical Therapy Program, University of Wisconsin - La Crosse, 1300 Badger Street, La Crosse, WI, United States; La Crosse Institute for Movement Science (LIMS), University of Wisconsin - La Crosse, 1300 Badger Street, La Crosse, WI, United States
| | - Tess Rademaker
- Department of Health Professions, Physical Therapy Program, University of Wisconsin - La Crosse, 1300 Badger Street, La Crosse, WI, United States; La Crosse Institute for Movement Science (LIMS), University of Wisconsin - La Crosse, 1300 Badger Street, La Crosse, WI, United States
| | - Thomas G Almonroeder
- Rinker-Ross School of Health Sciences, Physical Therapy Program, Trine University, 1819 Carew Street, Fort Wayne, IN, United States
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14
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Milner CE, Meardon SA, Hawkins JL, Willson JD. Walking velocity and step length adjustments affect knee joint contact forces in healthy weight and obese adults. J Orthop Res 2018; 36:2679-2686. [PMID: 29704285 DOI: 10.1002/jor.24031] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 04/19/2018] [Indexed: 02/04/2023]
Abstract
Knee osteoarthritis is a major public health problem and adults with obesity are particularly at risk. One approach to alleviating this problem is to reduce the mechanical load at the joint during daily activity. Adjusting temporospatial parameters of walking could mitigate cumulative knee joint mechanical loads. The purpose of this study was to determine how adjustments to velocity and step length affects knee joint loading in healthy weight adults and adults with obesity. We collected three-dimensional gait analysis data on 10 adults with a normal body mass index and 10 adults with obesity during over ground walking in nine different conditions. In addition to preferred velocity and step length, we also conducted combinations of 15% increased and decreased velocity and step length. Peak tibiofemoral joint impulse and knee adduction angular impulse were reduced in the decreased step length conditions in both healthy weight adults (main effect) and those with obesity (interaction effect). Peak knee joint adduction moment was also reduced with decreased step length, and with decreased velocity in both groups. We conclude from these results that adopting shorter step lengths during daily activity and when walking for exercise can reduce mechanical stimuli associated with articular cartilage degenerative processes in adults with and without obesity. Thus, walking with reduced step length may benefit adults at risk for disability due to knee osteoarthritis. Clinical Significance: Adopting a shorter step length during daily walking activity may reduce knee joint loading and thus benefit those at risk for knee cartilage degeneration. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:2679-2686, 2018.
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Affiliation(s)
- Clare E Milner
- ReHAB Group, Department of Physical Therapy and Rehabilitation Science, Drexel University, Philadelphia, Pennsylvania, 19102
| | - Stacey A Meardon
- Department of Physical Therapy, East Carolina University, Greenville, North Carolina, 27834
| | - Jillian L Hawkins
- ReHAB Group, Department of Physical Therapy and Rehabilitation Science, Drexel University, Philadelphia, Pennsylvania, 19102
| | - John D Willson
- Department of Physical Therapy, East Carolina University, Greenville, North Carolina, 27834
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15
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Analysis of Big Data in Gait Biomechanics: Current Trends and Future Directions. J Med Biol Eng 2017; 38:244-260. [PMID: 29670502 PMCID: PMC5897457 DOI: 10.1007/s40846-017-0297-2] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Accepted: 05/09/2017] [Indexed: 12/12/2022]
Abstract
The increasing amount of data in biomechanics research has greatly increased the importance of developing advanced multivariate analysis and machine learning techniques, which are better able to handle “big data”. Consequently, advances in data science methods will expand the knowledge for testing new hypotheses about biomechanical risk factors associated with walking and running gait-related musculoskeletal injury. This paper begins with a brief introduction to an automated three-dimensional (3D) biomechanical gait data collection system: 3D GAIT, followed by how the studies in the field of gait biomechanics fit the quantities in the 5 V’s definition of big data: volume, velocity, variety, veracity, and value. Next, we provide a review of recent research and development in multivariate and machine learning methods-based gait analysis that can be applied to big data analytics. These modern biomechanical gait analysis methods include several main modules such as initial input features, dimensionality reduction (feature selection and extraction), and learning algorithms (classification and clustering). Finally, a promising big data exploration tool called “topological data analysis” and directions for future research are outlined and discussed.
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16
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Loslever P, Schiro J, Gabrielli F, Pudlo P. Comparing multiple correspondence and principal component analyses with biomechanical signals. Example with turning the steering wheel. Comput Methods Biomech Biomed Engin 2017; 20:1038-1047. [PMID: 28562073 DOI: 10.1080/10255842.2017.1331341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The purpose of this article is to compare Principal Component Analysis (PCA) and a much less used method, i.e. MCA (Multiple Correspondence Analysis) with data being first changed into membership values to fuzzy space windows. For such a comparison, data from an experimental study about turning the steering wheel is used. In a didactic perspective, this article only considers one multidimensional signal with 5 components: 3 linked to the steering wheel angle and hand positions and 2 to hand effort variables. A discussion weighs out the pros and the cons of both methods with criteria such as the possibility to show complex relational phenomena, the analysis/computing time or the information loss inherent to the averaging stage (in the perspective to analyze several hundreds of large multidimensional signals).
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Affiliation(s)
- P Loslever
- a Laboratory of Industrial and Human Automation Control, Mechanical Engineering and Computer Sciences , University of Valenciennes , Valenciennes , France
| | - J Schiro
- a Laboratory of Industrial and Human Automation Control, Mechanical Engineering and Computer Sciences , University of Valenciennes , Valenciennes , France
| | - F Gabrielli
- a Laboratory of Industrial and Human Automation Control, Mechanical Engineering and Computer Sciences , University of Valenciennes , Valenciennes , France
| | - P Pudlo
- a Laboratory of Industrial and Human Automation Control, Mechanical Engineering and Computer Sciences , University of Valenciennes , Valenciennes , France
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17
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Tateuchi H, Shiratori S, Ichihashi N. The effect of three-dimensional postural change on shear elastic modulus of the iliotibial band. J Electromyogr Kinesiol 2016; 28:137-42. [PMID: 27151824 DOI: 10.1016/j.jelekin.2016.04.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 04/03/2016] [Accepted: 04/18/2016] [Indexed: 01/26/2023] Open
Abstract
To understand and treat iliotibial band (ITB) syndrome, caused by excessive compression between the ITB and lateral femoral condyle, it is important to identify factors contributing to an increase in ITB stiffness. The purpose of this study was to clarify the factors that contribute to an increase in ITB stiffness by examining the relationship between three-dimensional postural changes and ITB stiffness. Fourteen healthy individuals performed one-leg standing under 7 conditions (including normal one-leg standing as a control condition) in which the pelvic position was changed in three planes. The shear elastic modulus in the ITB was measured using shear-wave elastography, as a measure of ITB stiffness. The three-dimensional joint angles and external joint moments in the hip and knee joints were also measured to confirm the changes in joint angles and external load. Compared to the normal one-leg standing condition, ITB stiffness was significantly increased in the pelvic posterior tilted position (i.e. hip extension), contralateral pelvic dropped position (i.e. hip adduction), and contralateral pelvic posterior rotated position (i.e. hip external rotation). The findings suggest that interventions to reduce hip extension, adduction, and external rotation might be useful if these excessive positional changes are detected in patients with ITB syndrome.
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Affiliation(s)
- Hiroshige Tateuchi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
| | - Sakiko Shiratori
- Division of Physical Therapy, Rehabilitation Units, Shiga University of Medical Science Hospital, Tsukiwa-cho, Seta, Otsu, Shiga 520-2192, Japan
| | - Noriaki Ichihashi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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18
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Phinyomark A, Hettinga BA, Osis S, Ferber R. Do intermediate- and higher-order principal components contain useful information to detect subtle changes in lower extremity biomechanics during running? Hum Mov Sci 2015; 44:91-101. [DOI: 10.1016/j.humov.2015.08.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 08/25/2015] [Accepted: 08/26/2015] [Indexed: 10/23/2022]
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19
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Aderem J, Louw QA. Biomechanical risk factors associated with iliotibial band syndrome in runners: a systematic review. BMC Musculoskelet Disord 2015; 16:356. [PMID: 26573859 PMCID: PMC4647699 DOI: 10.1186/s12891-015-0808-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 11/06/2015] [Indexed: 01/03/2023] Open
Abstract
Background Iliotibial band syndrome is the second most common running injury. A gradual increase in its occurrence has been noted over the past decade. This may be related to the increasing number of runners worldwide. Since the last systematic review, six additional papers have been published, providing an opportunity for this review to explore the previously identified proximal risk factors in more detail. The aim of this systematic review is thus to provide an up to date quantitative synthesis of the trunk, pelvis and lower limb biomechanical risk factors associated with Iliotibial band syndrome in runners and to provide an algorithm for future research and clinical guidance. Methods An electronic search was conducted of literature published up until April 2015. The critical appraisal tool for quantitative studies was used to evaluate methodological quality of eligible studies. Forest plots displayed biomechanical findings, mean differences and confidence intervals. Level of evidence and clinical impact were evaluated for each risk factor. A meta-analysis was conducted where possible. Result Thirteen studies were included (prospective (n = 1), cross-sectional (n = 12)). Overall the methodological score of the studies was moderate. Female shod runners who went onto developing Iliotibial band syndrome presented with increased peak hip adduction and increased peak knee internal rotation during stance. Female shod runners with Iliotibial band syndrome presented with increased: peak knee internal rotation and peak trunk ipsilateral during stance. Conclusion Findings indicate new quantitative evidence about the biomechanical risk factors associated with Iliotibial band syndrome in runners. Despite these findings, there are a number of limitations to this review including: the limited number of studies, small effect sizes and methodological shortcomings. This review has considered these shortcomings and has summarised the best available evidence to guide clinical decisions and plan future research on Iliotibial band syndrome aetiology and risk.
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Affiliation(s)
- Jodi Aderem
- Faculty of Medicine and Health Sciences, Physiotherapy Division, University of Stellenbosch, PO Box 19063, Francie van Zijl Drive, Tygerberg, 7505, South Africa.
| | - Quinette A Louw
- Faculty of Medicine and Health Sciences, Physiotherapy Division, University of Stellenbosch, PO Box 19063, Francie van Zijl Drive, Tygerberg, 7505, South Africa.
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20
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Tateuchi H, Shiratori S, Ichihashi N. The effect of angle and moment of the hip and knee joint on iliotibial band hardness. Gait Posture 2015; 41:522-8. [PMID: 25542398 DOI: 10.1016/j.gaitpost.2014.12.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 10/10/2014] [Accepted: 12/03/2014] [Indexed: 02/02/2023]
Abstract
Although several studies have described kinematic deviations such as excessive hip adduction in patients with iliotibial band (ITB) syndrome, the factors contributing to increased ITB hardness remains undetermined, owing to lack of direct in vivo measurement. The purpose of this study was to clarify the factors contributing to an increase in ITB hardness by comparing the ITB hardness between the conditions in which the angle, moment, and muscle activity of the hip and knee joint are changed. Sixteen healthy individuals performed the one-leg standing under five conditions in which the pelvic and trunk inclination were changed in the frontal plane. The shear elastic modulus in the ITB was measured as an indicator of the ITB hardness using shear wave elastography. The three-dimensional joint angle and external joint moment in the hip and knee joints, and muscle activities of the gluteus maximus, gluteus medius, tensor fasciae latae, and vastus lateralis, which anatomically connect to the ITB, were also measured. ITB hardness was significantly increased in the posture with pelvic and trunk inclination toward the contralateral side of the standing leg compared with that in all other conditions (increase of approximately 32% compared with that during normal one-leg standing). This posture increased both the hip adduction angle and external adduction moment at the hip and knee joint, although muscle activities were not increased. Our findings suggest that coexistence of an increased adduction moment at the hip and knee joints with an excessive hip adduction angle lead to an increase in ITB hardness.
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Affiliation(s)
- Hiroshige Tateuchi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
| | - Sakiko Shiratori
- Division of Physical Therapy, Rehabilitation Units, Shiga University of Medical Science Hospital, Shiga, Japan
| | - Noriaki Ichihashi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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21
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Foch E, Reinbolt JA, Zhang S, Fitzhugh EC, Milner CE. Associations between iliotibial band injury status and running biomechanics in women. Gait Posture 2015; 41:706-10. [PMID: 25701012 DOI: 10.1016/j.gaitpost.2015.01.031] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 01/24/2015] [Accepted: 01/30/2015] [Indexed: 02/02/2023]
Abstract
Iliotibial band syndrome (ITBS) is a common overuse knee injury that is twice as likely to afflict women compared to men. Lower extremity and trunk biomechanics during running, as well as hip abductor strength and iliotibial band flexibility, are factors believed to be associated with ITBS. The purpose of this cross-sectional study was to determine if differences in lower extremity and trunk biomechanics during running exist among runners with current ITBS, previous ITBS, and controls. Additionally, we sought to determine if isometric hip abductor strength and iliotibial band flexibility were different among groups. Twenty-seven female runners participated in the study. Participants were divided into three equal groups: current ITBS, previous ITBS, and controls. Overground running trials, isometric hip abductor strength, and iliotibial band flexibility were recorded for all participants. Discrete joint and segment biomechanics, as well as hip strength and flexibility measures were analyzed using a one-way analysis of variance. Runners with current ITBS exhibited 1.8 (1.5)° greater trunk ipsilateral flexion and 7 (6)° less iliotibial band flexibility compared to runners with previous ITBS and controls. Runners with previous ITBS exhibited 2.2 (2.9) ° less hip adduction compared to runners with current ITBS and controls. Hip abductor strength 3.3 (2.6) %BM×h was less in runners with previous ITBS but not current ITBS compared to controls. Runners with current ITBS may lean their trunk more towards the stance limb which may be associated with decreased iliotibial band flexibility.
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Affiliation(s)
- Eric Foch
- Department of Kinesiology, Recreation, and Sports Studies, University of Tennessee, Knoxville, TN, USA.
| | - Jeffrey A Reinbolt
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN, USA
| | - Songning Zhang
- Department of Kinesiology, Recreation, and Sports Studies, University of Tennessee, Knoxville, TN, USA
| | - Eugene C Fitzhugh
- Department of Kinesiology, Recreation, and Sports Studies, University of Tennessee, Knoxville, TN, USA
| | - Clare E Milner
- Department of Kinesiology, Recreation, and Sports Studies, University of Tennessee, Knoxville, TN, USA
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22
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Phinyomark A, Osis S, Hettinga BA, Leigh R, Ferber R. Gender differences in gait kinematics in runners with iliotibial band syndrome. Scand J Med Sci Sports 2015; 25:744-53. [DOI: 10.1111/sms.12394] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/12/2014] [Indexed: 10/24/2022]
Affiliation(s)
- A. Phinyomark
- Faculty of Kinesiology; University of Calgary; Calgary Alberta Canada
| | - S. Osis
- Faculty of Kinesiology; University of Calgary; Calgary Alberta Canada
- Running Injury Clinic; Calgary Alberta Canada
| | - B. A. Hettinga
- Faculty of Kinesiology; University of Calgary; Calgary Alberta Canada
- Running Injury Clinic; Calgary Alberta Canada
| | - R. Leigh
- Faculty of Kinesiology; University of Calgary; Calgary Alberta Canada
| | - R. Ferber
- Faculty of Kinesiology; University of Calgary; Calgary Alberta Canada
- Running Injury Clinic; Calgary Alberta Canada
- Faculty of Nursing; University of Calgary; Calgary Alberta Canada
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23
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Phinyomark A, Hettinga BA, Osis ST, Ferber R. Gender and age-related differences in bilateral lower extremity mechanics during treadmill running. PLoS One 2014; 9:e105246. [PMID: 25137240 PMCID: PMC4138160 DOI: 10.1371/journal.pone.0105246] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 07/23/2014] [Indexed: 11/19/2022] Open
Abstract
Female runners have a two-fold risk of sustaining certain running-related injuries as compared to their male counterparts. Thus, a comprehensive understanding of the sex-related differences in running kinematics is necessary. However, previous studies have either used discrete time point variables and inferential statistics and/or relatively small subject numbers. Therefore, the first purpose of this study was to use a principal component analysis (PCA) method along with a support vector machine (SVM) classifier to examine the differences in running gait kinematics between female and male runners across a large sample of the running population as well as between two age-specific sub-groups. Bilateral 3-dimensional lower extremity gait kinematic data were collected during treadmill running. Data were analysed on the complete sample (n = 483: female 263, male 220), a younger subject group (n = 56), and an older subject group (n = 51). The PC scores were first sorted by the percentage of variance explained and we also employed a novel approach wherein PCs were sorted based on between-gender statistical effect sizes. An SVM was used to determine if the sex and age conditions were separable and classifiable based on the PCA. Forty PCs explained 84.74% of the variance in the data and an SVM classification accuracy of 86.34% was found between female and male runners. Classification accuracies between genders for younger subjects were higher than a subgroup of older runners. The observed interactions between age and gender suggest these factors must be considered together when trying to create homogenous sub-groups for research purposes.
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Affiliation(s)
| | - Blayne A. Hettinga
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Running Injury Clinic, Calgary, Alberta, Canada
| | - Sean T. Osis
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Running Injury Clinic, Calgary, Alberta, Canada
| | - Reed Ferber
- Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
- Faculty of Nursing, University of Calgary, Calgary, Alberta, Canada
- Running Injury Clinic, Calgary, Alberta, Canada
- * E-mail:
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