Physiological and Biomechanical Responses to Prolonged Heavy Load Carriage During Level Treadmill Walking in Females

in Journal of Applied Biomechanics
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Heavy load carriage has been identified as a main contributing factor to the high incidence of overuse injuries in soldiers. Peak vertical ground reaction force (VGRFMAX) and maximal vertical loading rates (VLRMAX) may increase during heavy prolonged load carriage with the development of muscular fatigue and reduced shock attenuation capabilities. The objectives of the current study were (1) to examine physiological and biomechanical changes that occur during a prolonged heavy load carriage task, and (2) to examine if this task induces neuromuscular fatigue and changes in muscle architecture. Eight inexperienced female participants walked on an instrumented treadmill carrying operational loads for 60 minutes at 5.4 km·h–1. Oxygen consumption (V˙O2), heart rate, rating of perceived exertion (RPE), trunk lean angle, and ground reaction forces were recorded continuously during task. Maximal force and in-vivo muscle architecture were assessed pre- and posttask. Significant increases were observed for VGRFMAX, VLRMAX, trunk lean angle, V˙O2, heart rate, and RPE during the task. Increased vastus lateralis fascicle length and decreased maximal force production were also observed posttask. Prolonged heavy load carriage, in an inexperienced population carrying operational loads, results in progressive increases in ground reaction force parameters that have been associated with overuse injury.

Lidstone, Stewart, Gurchiek, Needle, van Werkhoven, and McBride are with the Department of Health and Exercise Science, Appalachian State University, Boone, NC, USA.

Address author correspondence to Daniel E. Lidstone at lidstoned@appstate.edu.
  • 1.

    Roy TC, Knapik JJ, Ritland BM, Murphy N, Sharp MA. Risk factors for musculoskeletal injuries for soldiers deployed to Afghanistan. Aviat Space Environ Med. 2012;83(11):10601066. PubMed doi: 10.3357/ASEM.3341.2012

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 2.

    Orr RM, Johnston V, Coyle J, Pope R. Reported load carriage injuries of the Australian army soldier. J Occup Rehabil. 2015;25(2):316322. PubMed doi: 10.1007/s10926-014-9540-7

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 3.

    Birrell SA, Hooper RH, Haslam RA. The effect of military load carriage on ground reaction forces. Gait Posture. 2007;26(4):611614. PubMed doi: 10.1016/j.gaitpost.2006.12.008

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 4.

    Wang H, Frame J, Ozimek E, Leib D, Dugan EL. Influence of fatigue and load carriage on mechanical loading during walking. Mil Med. 2012;177(2):152156. PubMed doi: 10.7205/MILMED-D-11-00210

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 5.

    Zadpoor AA, Nikooyan AA: The relationship between lower-extremity stress fractures and the ground reaction force: a systematic review. Clin Biomech. 2011;26(1):2328. PubMed doi: 10.1016/j.clinbiomech.2010.08.005

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 6.

    Birrell SA, Haslam RA. The effect of load distribution within military load carriage systems on the kinetics of human gait. Appl Ergon. 2010;41(4):585590. PubMed doi: 10.1016/j.apergo.2009.12.004

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 7.

    Attwells RL, Birrell SA, Hooper RH, Mansfield NJ. Influence of carrying heavy loads on soldiers posture, movements and gait. Ergonomics. 2006;49(14):15271537. PubMed doi: 10.1080/00140130600757237

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 8.

    Majumdar D, Pal MS, Majumdar D. Effects of military load carriage on kinematics of gait. Ergonomics. 2010;53(6):782791. PubMed doi: 10.1080/00140131003672015

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 9.

    Simpson KM, Munro BJ, Steele JR. Effects of prolonged load carriage on ground reaction forces, lower limb kinematics and spatio-temporal parameters in female recreational hikers. Ergonomics. 2012;55(3):316326. PubMed doi: 10.1080/00140139.2011.642004

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 10.

    Grenier JG, Peyrot N, Castells J, Oullion R, Messonnier L, Morin JB. Energy cost and mechanical work of walking during load carriage in soldiers. Med Sci Sports Exerc. 2012;44(6):11311140. PubMed doi: 10.1249/MSS.0b013e3182456057

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 11.

    Blacker SD, Fallowfield JL, Bilzon JL, Willems ME. Physiological responses to load carriage during level and downhill treadmill walking. Medicina Sportiva. 2009;13(2):116124. 10.2478/v10036-009-0018-1

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 12.

    Grenier JG, Millet GY, Peyrot N, Samozino P, Oullion R, Messonnier L, Morin JB. Effects of extreme-duration heavy load carriage on neuromuscular function and locomotion: a military-based study. PloS One. 2012;7(8):43586. PubMed doi: 10.1371/journal.pone.0043586

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 13.

    Fallowfield JL, Blacker SD, Willems ME, Davey T, Layden J. Neuromuscular and cardiovascular responses of Royal Marine recruits to load carriage in the field. Appl Ergon. 2012;43(6):11311137. PubMed doi: 10.1016/j.apergo.2012.04.003

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 14.

    Blacker SD, Fallowfield JL, Bilzon JL, Willems ME. Neuromuscular impairment following backpack load carriage. J Hum Kinet. 2013;37(1):9198. PubMed doi: 10.2478/hukin-2013-0029

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 15.

    Simpson KM, Munro BJ, Steele JR. Backpack load affects lower limb muscle activity patterns of female hikers during prolonged load carriage. J Electromyogr Kinesiol. 2011;21(5):782788. PubMed doi: 10.1016/j.jelekin.2011.05.012

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 16.

    Ishikawa M, Dousset E, Avela J et al. Changes in the soleus muscle architecture after exhausting stretch-shortening cycle exercise in humans. Eur J Appl Physiol. 2006;97(3):298306. PubMed doi: 10.1007/s00421-006-0180-2

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 17.

    Mitsukawa N, Sugisaki N, Kanehisa H, Fukunaga T, Kawakami Y. Fatigue-related changes in fascicle–tendon geometry over repeated contractions: difference between synergist muscles. Muscle Nerve. 2009;40(3):395401. PubMed doi: 10.1002/mus.21303

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 18.

    Edgerton VR, Smith JL, Simpson DR. Muscle fibre type populations of human leg muscles. Histochem J. 1975;7(3):259266. PubMed doi: 10.1007/BF01003594

  • 19.

    Nindl BC, Leone CD, Tharion WJ et al. Physical performance responses during 72 h of military operational stress. Med Sci Sports Exerc. 2002;34(11):18141822. PubMed doi: 10.1097/00005768-200211000-00019

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 20.

    Kelly KR, Jameson JT. Preparing for combat readiness for the fight: physical performance profile of female US marines. J Strength Cond Res. 2016;30(3):595604. PubMed doi: 10.1519/JSC.0000000000001269

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 21.

    Astorino TA, Rietschel JC, Tam PA et al. Reinvestigation of optimal duration of VO2 max testing. J Exerc Physiol Online. 2004;7:OR0OR0.

    • Search Google Scholar
    • Export Citation
  • 22.

    Howley E, Bassett D, Welsch H. Criteria for maximal oxygen uptake: review and commentary. Med Sci Sports Exerc. 1995;27:12921301. PubMed doi: 10.1249/00005768-199509000-00009

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 23.

    Dean CE. The Modern Warrior’s Combat Load. Dismounted Operations in Afghanistan April–May 2003. Fort Leavenworth, KS: Army Center for Lessons Learned; 2004.

    • Search Google Scholar
    • Export Citation
  • 24.

    Kang GE, Gross MM. Concurrent validation of magnetic and inertial measurement units in estimating upper body posture during Gait. Measurement. 2016;82(2016):240245. 10.1016/j.measurement.2016.01.007

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 25.

    Jurman D, Jankovec M, Kamnik R, Topič M. Calibration and data fusion solution for the miniature attitude and heading reference system. Sens Actuators A Phys. 2007;138(2):411420. 10.1016/j.sna.2007.05.008

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 26.

    Wundersitz DWT, Gastin PB, Richter C, Robertson SJ, Netto KJ. Validity of a trunk-mounted accelerometer to assess peak accelerations during walking, jogging and running. Eur J Sport Sci. 2015;15(5):382390. PubMed doi: 10.1080/17461391.2014.955131

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 27.

    Bergamini E, Guillon P, Camomilla V, Pillet H, Skalli W, Cappozzo A. Trunk inclination estimate during the sprint start using an inertial measurement unit: a validation study. J Appl Biomech. 2013;29:622627. PubMed doi: 10.1123/jab.29.5.622

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 28.

    Borg GA. Psychophysical bases of perceived exertion. Med Sci Sports Exerc. 1982;14:377381. PubMed doi: 10.1249/00005768-198205000-00012

  • 29.

    Bénard MR, Becher JG, Harlaar J, Huijing PA, Jaspers RT. Anatomical information is needed in ultrasound imaging of muscle to avoid potentially substantial errors in measurement of muscle geometry. Muscle Nerve. 2009;39(5):652665. PubMed doi: 10.1002/mus.21287

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 30.

    Kurokawa S, Fukunaga T, Fukashiro S. Behavior of fascicles and tendinous structures of human gastrocnemius during vertical jumping. J Appl Physiol. 2001;90(4):13491358. PubMed

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 31.

    Kumagai K, Abe T, Brechue WF, Ryushi T, Takano S, Mizuno M. Sprint performance is related to muscle fascicle length in male 100-m sprinters. J Appl Physiol. 2000;88(3):811816.PubMed

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 32.

    Zifchock RA, Davis I, Hamill J. Kinetic asymmetry in female runners with and without retrospective tibial stress fractures. J Biomech. 2006;39(15):27922797. PubMed doi: 10.1016/j.jbiomech.2005.10.003

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 33.

    Hreljac A. Impact and overuse injuries in runners. Med Sci Sports Exerc. 2004;36(5):845849. PubMed doi: 10.1249/01.MSS.0000126803.66636.DD

  • 34.

    Milner CE, Ferber R, Pollard CD, Hamill J, Davis IS. Biomechanical factors associated with tibial stress fracture in female runners. Med Sci Sports Exerc. 2006;38(2):323328. PubMed doi: 10.1249/01.mss.0000183477.75808.92

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 35.

    Knapik JJ, Reynolds K. Load carriage-related injury mechanisms, risk factors, and prevention. In: Gefen A, Epstein Y, eds. Mechanobiology and Mechanophysiology of Military-Related Injuries. Berlin, Germany: Springer Publishing; 2015.

    • Search Google Scholar
    • Export Citation
  • 36.

    Simons C, Bradshaw EJ. Do accelerometers mounted on the back provide a good estimate of impact loads in jumping and landing tasks? Sports Biomech. 2016;15(1):7688. PubMed doi: 10.1080/14763141.2015.1123765

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 37.

    Singh T, Koh M. Effects of backpack load position on spatiotemporal parameters and trunk forward lean. Gait Posture. 2009;29(1):4953. PubMed doi: 10.1016/j.gaitpost.2008.06.006

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 38.

    Harman E, Han K, Frykman P, Pandorf C. The Effects of Backpack Weight on the Biomechanics of Load Carriage. Report No. 00–14. Natick, MA: U.S. Army Research Institute of Environmental Medicine; 2000.

    • Search Google Scholar
    • Export Citation
  • 39.

    Simpson KM, Munro BJ, Steele JR. Effect of load mass on posture, heart rate and subjective responses of recreational female hikers to prolonged load carriage. Appl Ergon. 2011;42(3):403410. PubMed doi: 10.1016/j.apergo.2010.08.018

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 40.

    Qu X, Yeo JC. Effects of load carriage and fatigue on gait characteristics. J Biomech. 2011;44(7):12591263. PubMed doi: 10.1016/j.jbiomech.2011.02.016

  • 41.

    Granata KP, Slota GP, Wilson SE. Influence of fatigue in neuromuscular control of spinal stability. Hum Factors. 2004;46(1):8191. 10.1518/hfes.46.1.81.30391

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 42.

    Mullins AK, Annett LE, Drain JR, Kemp JG, Clark RA, Whyte DG. Lower limb kinematics and physiological responses to prolonged load carriage in untrained individuals. Ergonomics. 2015;58(5):770780. PubMed doi: 10.1080/00140139.2014.984775

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 43.

    Tay CS, Lee JK, Teo YS, Foo PQ, Tan PM, Kong PW. Using gait parameters to detect fatigue and responses to ice slurry during prolonged load carriage. Gait Posture. 2016;43:1723. PubMed doi: 10.1016/j.gaitpost.2015.10.010

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 44.

    Phillips DB, Stickland MK, Petersen SR. Ventilatory responses to prolonged exercise with heavy load carriage. Eur J Appl Physiol. 2016;116(1):1927. PubMed doi: 10.1007/s00421-015-3240-7

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
  • 45.

    Shekerdemian L, Bohn D. Cardiovascular effects of mechanical ventilation. Arch Dis Child. 1999;80(5):475480. PubMed doi: 10.1136/adc.80.5.475

  • 46.

    Liu BS. Backpack load positioning and walking surface slope effects on physiological responses in infantry soldiers. Int J Ind Ergonom. 2007;37(9):754760. 10.1016/j.ergon.2007.06.001

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 47.

    Sagiv M, Ben-Gal S, Ben-Sira D. Effects of gradient and load carried on human haemodynamic responses during treadmill walking. Eur J Appl Physiol. 2000;83(1):4750. PubMed doi: 10.1007/s004210000250

    • Crossref
    • PubMed
    • Search Google Scholar
    • Export Citation
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