Influence of New Military Athletic Footwear on the Kinetics and Kinematics of Running in Relation to Army Boots

Abstract Sinclair, J and Taylor, PJ. The influence of new military athletic footwear on the kinetics and kinematics of running in relation to army boots. J Strength Cond Res 28(10): 2900–2908, 2014—Musculoskeletal injuries in the lower extremities are common in military recruits. Army boots have frequently been cited as a potential mechanism behind these high injury rates. In response to this, the British Army introduced new footwear models, the PT-03 (cross-trainer) and PT1000 (running shoes), which are issued to each new recruit in an attempt to reduce the incidence of these injuries. The aim of the current investigation was to examine the kinetics and kinematic of the PT-03 and PT1000 footwear in relation to conventional army boots. Thirteen participants ran at 4.0 m·s−1 in each footwear condition. Three-dimensional kinematics from the hip, knee, and ankle were measured using an 8-camera motion analysis system. In addition, simultaneous ground reaction forces were obtained. Kinetic parameters were obtained alongside joint kinematics and compared using repeated-measures analyses of variance. The kinetic analysis revealed that impact parameters were significantly greater when running in the army boot compared with the PT-03 and PT1000. The kinematic analysis indicated that, in comparison with the PT-03 and PT1000, running in army boots was associated with significantly greater eversion and tibial internal rotation. It was also found that when running in the PT-03 footwear, participants exhibited significantly greater hip adduction and knee abduction compared with the army boots and PT1000. The results of this study suggest that the army boots and PT-03 footwear are associated with kinetic and kinematic parameters that have been linked to the etiology of injury; thus, it is recommended that the PT1000 footwear be adopted for running exercises.

[1]  T. Noakes,et al.  Prevention of common overuse injuries by the use of shock absorbing insoles , 1990, The American journal of sports medicine.

[2]  J. Ross,et al.  A review of lower limb overuse injuries during basic military training. Part 1: Types of overuse injuries. , 1993, Military medicine.

[3]  J. Ross A review of lower limb overuse injuries during basic military training. Part 2: Prevention of overuse injuries. , 1993, Military medicine.

[4]  Sharon J Dixon,et al.  The influence of simulated wear upon the ability of insoles to reduce peak pressures during running when wearing military boots. , 2002, Gait & posture.

[5]  Timothy A Mitchener,et al.  Medical surveillance of injuries in the u.s. Military descriptive epidemiology and recommendations for improvement. , 2010, American journal of preventive medicine.

[6]  Joseph Hamill,et al.  Kinematic adaptations during running: effects of footwear, surface, and duration. , 2004, Medicine and science in sports and exercise.

[7]  R. Ferber,et al.  Gender differences in lower extremity mechanics during running. , 2003, Clinical biomechanics.

[8]  D. De Clercq,et al.  A prospective study of gait related risk factors for exercise-related lower leg pain. , 2006, Gait & posture.

[9]  B. Koes,et al.  Incidence and determinants of lower extremity running injuries in long distance runners: a systematic review , 2007, British Journal of Sports Medicine.

[10]  Clare E. Milner,et al.  Biomechanical factors associated with tibial stress fracture in female runners. , 2006, Medicine and science in sports and exercise.

[11]  P J Taylor,et al.  Influence of the helical and six available Cardan sequences on 3D ankle joint kinematic parameters , 2012, Sports biomechanics.

[12]  Joseph Hamill,et al.  Proximal and distal influences on hip and knee kinematics in runners with patellofemoral pain during a prolonged run. , 2008, The Journal of orthopaedic and sports physical therapy.

[13]  Richard S. Gilbert,et al.  Stress Fractures in Military Recruits—A Review of Twelve Years' Experience , 1966 .

[14]  D. Kowal Nature and causes of injuries in women resulting from an endurance training program , 1980, The American journal of sports medicine.

[15]  G. J. Gouw,et al.  Athletic footwear: unsafe due to perceptual illusions. , 1991, Medicine and science in sports and exercise.

[16]  J J Knapik,et al.  Injuries during Marine Corps officer basic training. , 2000, Military medicine.

[17]  R. Brand,et al.  Prediction of hip joint centre location from external landmarks , 1989 .

[18]  John R. Robinson,et al.  Epidemiology of injuries associated with physical training among young men in the army. , 1993, Medicine and science in sports and exercise.

[19]  E. Hennig GENDER DIFFERENCES FOR RUNNING IN ATHLETIC FOOTWEAR , 2001 .

[20]  Jonathan Kenneth Sinclair,et al.  The influence of barefoot and barefoot-inspired footwear on the kinetics and kinematics of running in comparison to conventional running shoes , 2013 .

[21]  M. Cunningham,et al.  The effect of a modified physical training program in reducing injury and medical discharge rates in Australian Army recruits. , 1999, Military medicine.

[22]  M. Yeadon,et al.  Mechanical analysis of the landing phase in heel-toe running. , 1992, Journal of biomechanics.

[23]  F. O’Connor,et al.  Managing overuse injuries: a systematic approach. , 1997, The Physician and sportsmedicine.

[24]  M. Whittle,et al.  Generation and attenuation of transient impulsive forces beneath the foot: a review. , 1999, Gait & posture.

[25]  B. Hanley,et al.  Cypriot and greek army military boot cushioning: ground reaction forces and subjective responses. , 2013, Military medicine.

[26]  Do lower extremity kinematics and training variables affect the development of overuse injuries in runners? - a prospective study , 2012, Journal of Foot and Ankle Research.

[27]  C. Powers The influence of altered lower-extremity kinematics on patellofemoral joint dysfunction: a theoretical perspective. , 2003, The Journal of orthopaedic and sports physical therapy.

[28]  K R Kaufman,et al.  Military training-related injuries: surveillance, research, and prevention. , 2000, American journal of preventive medicine.

[29]  S. A. Almeida,et al.  A Physical Training Program to Reduce Musculoskeletal Injuries in U.S. Marine Corps Recruits, Version 1.0. , 1997 .

[30]  J. Hamill,et al.  The Influence of Midsole Cushioning on Mechanical and Hematological Responses during a Prolonged Downhill Run , 2002, Research quarterly for exercise and sport.

[31]  Joseph P DeAngelis,et al.  Does Shoe Insole Modification Prevent Stress Fractures? A Systematic Review , 2009, HSS Journal.

[32]  Bruce H Jones,et al.  Prevention of physical training-related injuries recommendations for the military and other active populations based on expedited systematic reviews. , 2010, American journal of preventive medicine.

[33]  J. Sinclair,et al.  Gender Differences in the Kinetics and Kinematics of Distance Running: Implications for Footwear Design , 2012 .

[34]  A Leardini,et al.  Position and orientation in space of bones during movement: anatomical frame definition and determination. , 1995, Clinical biomechanics.

[35]  Torsten Bumgarner,et al.  Biomechanics and Motor Control of Human Movement , 2013 .

[36]  Joseph Hamill,et al.  Biomechanical Analysis of Military Boots: Phase 2. Volume 2. Human User Testing of Military and Commercial Footwear. , 1996 .

[37]  K J Rothman,et al.  No Adjustments Are Needed for Multiple Comparisons , 1990, Epidemiology.

[38]  Jonathan Kenneth Sinclair,et al.  Evaluation of Kinematic Methods of Identifying Gait Events during Running , 2011 .

[39]  E. Chao,et al.  Q‐angle influences tibiofemoral and patellofemoral kinematics , 2001, Journal of orthopaedic research : official publication of the Orthopaedic Research Society.

[40]  Jukka T. Vtasalo,et al.  Some biomechanical aspects of the foot and ankle in athletes with and without shin splints , 1983, The American journal of sports medicine.

[41]  Masayoshi Kubo,et al.  Increased musculoskeletal stiffness during load carriage at increasing walking speeds maintains constant vertical excursion of the body center of mass. , 2003, Journal of biomechanics.

[42]  Clare E. Milner,et al.  Biomechanical predictors of retrospective tibial stress fractures in runners. , 2008, Journal of biomechanics.

[43]  M. G. Horton,et al.  Quadriceps femoris muscle angle: normal values and relationships with gender and selected skeletal measures. , 1989, Physical therapy.