The Changes of Physiological and Biomechanical Indices and Their Relations to Fatigue During Treadmill Walking with Different Loads

  • Jiewen Zheng
  • Yuhong Shen
  • Chenming Li
  • Pengfei Ren
  • Yafei Guo
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 318)


Objectives To analyze the changes of physiological and biomechanical signals and their relations to fatigue in treadmill walking with backpack load. Methods Cardiopulmonary function parameters, shoulder force, trunk pressure, and perceived fatigues are sampled simultaneously with six healthy men during 30-min treadmill walking experiments under five different conditions of backpack loads. Results HR, BR, VE, and VO2 gradually increased as the load increased, and the increasing rate became bigger during 37–39 kg tests. Shoulder force and shoulder pressure were strongly correlated with load. Pressures at waist and back regions were influenced by the tension degree of waist and chest belts. The 37-kg load was the turning point of human cardiopulmonary function starting working overload. The perceived fatigues in shoulder and whole body are more intense than those of back and waist. Conclusions The coordinate ability of cardiopulmonary system should be considered when studying treadmill walking with loads greater than 37 kg. Shoulder force and pressure are considered as main factors for fatigue evaluation.


Backpack Load carriage Perceived fatigue Physiological signals Biomechanical signals 


  1. 1.
    Knapik JJ, Reynolds KL, Harman E (2004) Soldier load carriage: historical, physiological, biomechanical, and medical aspects. Mil Med 169(1):45–56Google Scholar
  2. 2.
    Roy TC, Knapik JJ, Ritland BM, Murphy N, Sharp MA (2012) Risk factors for musculoskeletal injuries for soldiers deployed to Afghanistan. Aviat Space Environ Med 83(11):1060–1066CrossRefGoogle Scholar
  3. 3.
    Park H, Branson D, Petrova A, Peksoz S, Jacobson B, Warren A, Goad C, Kamenidis P (2013) Impact of ballistic body armour and load carriage on walking patterns and perceived comfort. Ergonomics 56(7):1167–1179CrossRefGoogle Scholar
  4. 4.
    Simpson KM, Munro BJ, Steele JR (2012) Effects of prolonged load carriage on ground reaction forces, lower limb kinematics and spatio-temporal parameters in female recreational hikers. Ergonomics 55(3):316–326CrossRefGoogle Scholar
  5. 5.
    Coalition Task Force 82, Coalition Joint Task Force 180 (2010) The modern warrior’s combat load: dismounted operations in Afghanistan. CreateSpace Independent Publishing Platform, Seattle Google Scholar
  6. 6.
    Deepti M, Madhu SP, Dhurjati M (2010) Effects of military load carriage on kinematics of gait. Ergonomics 53(6):728–791Google Scholar
  7. 7.
    Grenier JG, Millet GY, Peyrot N, Samozino P, Oullion R, Messonnier L, Morin JB (2012) Effects of extreme-duration heavy load carriage on neuromuscular function and locomotion: a military-based study. PLoS ONE 7(8):e43586CrossRefGoogle Scholar
  8. 8.
    Zhang WC, Shao YX, Tian Y, Chen MQ (1991) Physiological evaluation of three kinds of individual load-carrying equipments. Chin J Ind Hyg Occup Dis 9(5):257–262Google Scholar
  9. 9.
    Chen YH, Hao JQ (2008) Study on optimum load carriage for soldiers under different marching speed. Chin J Ind Hyg Occup Dis 26(12):743–744Google Scholar
  10. 10.
    Sun XJ, Tian F, Gao WY (2004) Ergonomic study on trunk lean angle and structure of backpack. Chin J Ergon 10(3):29–30, 51Google Scholar
  11. 11.
    Tomlin DL, Wenger HA (2001) The relationship between aerobic fitness and recovery from high intensity intermittent exercise. Sports Med 31(1):1–11CrossRefGoogle Scholar
  12. 12.
    Tanaka H, Monahan KD, Seals DR (2001) Age-predicted maximal heart rate revisited. J Am Coll Cardiol 37(1):153–156CrossRefGoogle Scholar
  13. 13.
    Stevenson JM, Bryant JT, Reid SA et al (2004) Development and assessment of the Canadian personal load carriage system using objective biomechanical measures. Ergonomics 47(12):1255–1271CrossRefGoogle Scholar
  14. 14.
    Stevenson JM, Bossi LL, Bryant JT et al (2004) A suite of objective biomechanical measurement tools for personal load carriage system assessment. Ergonomics 47(11):1160–1179CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Jiewen Zheng
    • 1
  • Yuhong Shen
    • 1
  • Chenming Li
    • 1
  • Pengfei Ren
    • 1
  • Yafei Guo
    • 1
  1. 1.The Quartermaster Research Institute of the General Logistic DepartmentBeijingChina

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