G A Lichtwark

Summary

Affiliation: Royal Veterinary College
Country: UK

Publications

  1. ncbi request reprint Is Achilles tendon compliance optimised for maximum muscle efficiency during locomotion?
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
    J Biomech 40:1768-75. 2007
  2. ncbi request reprint Muscle fascicle and series elastic element length changes along the length of the human gastrocnemius during walking and running
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
    J Biomech 40:157-64. 2007
  3. ncbi request reprint Effects of series elasticity and activation conditions on muscle power output and efficiency
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
    J Exp Biol 208:2845-53. 2005
  4. ncbi request reprint Interactions between the human gastrocnemius muscle and the Achilles tendon during incline, level and decline locomotion
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
    J Exp Biol 209:4379-88. 2006
  5. ncbi request reprint A modified Hill muscle model that predicts muscle power output and efficiency during sinusoidal length changes
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
    J Exp Biol 208:2831-43. 2005
  6. ncbi request reprint In vivo mechanical properties of the human Achilles tendon during one-legged hopping
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
    J Exp Biol 208:4715-25. 2005
  7. doi request reprint The mechanism for efficacy of eccentric loading in Achilles tendon injury; an in vivo study in humans
    J D Rees
    Department of Sport and Exercise Medicine, Royal National Orthopaedic Hospital, Stanmore, UK
    Rheumatology (Oxford) 47:1493-7. 2008
  8. ncbi request reprint The mechanics of mouse skeletal muscle when shortening during relaxation
    C J Barclay
    School of Physiotherapy and Exercise Science, Griffith University, Gold Coast, PMB50 Gold Coast Mail Centre, Gold Coast, QLD 9726, Australia
    J Biomech 40:3121-9. 2007
  9. doi request reprint Optimal muscle fascicle length and tendon stiffness for maximising gastrocnemius efficiency during human walking and running
    G A Lichtwark
    School of Physiotherapy and Exercise Science, Griffith University, Gold Coast, QLD, Australia
    J Theor Biol 252:662-73. 2008
  10. doi request reprint The energetic cost of activation in mouse fast-twitch muscle is the same whether measured using reduced filament overlap or N-benzyl-p-toluenesulphonamide
    C J Barclay
    School of Physiotherapy and Exercise Science, Griffith University, Gold Coast Campus, QLD, Australia
    Acta Physiol (Oxf) 193:381-91. 2008

Detail Information

Publications10

  1. ncbi request reprint Is Achilles tendon compliance optimised for maximum muscle efficiency during locomotion?
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
    J Biomech 40:1768-75. 2007
    ..The influence of varying tendon stiffness on kinematic performance may, however, play an important role in determining the efficiency of the muscle...
  2. ncbi request reprint Muscle fascicle and series elastic element length changes along the length of the human gastrocnemius during walking and running
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
    J Biomech 40:157-64. 2007
    ....
  3. ncbi request reprint Effects of series elasticity and activation conditions on muscle power output and efficiency
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
    J Exp Biol 208:2845-53. 2005
    ..In addition, by varying the amplitude of the activation level, the efficiency can theoretically remain unchanged, whilst the power output can be modulated...
  4. ncbi request reprint Interactions between the human gastrocnemius muscle and the Achilles tendon during incline, level and decline locomotion
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
    J Exp Biol 209:4379-88. 2006
    ..This may be a consequence of the role of this biarticular muscle or of the load sharing between the other muscles of the triceps surae...
  5. ncbi request reprint A modified Hill muscle model that predicts muscle power output and efficiency during sinusoidal length changes
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
    J Exp Biol 208:2831-43. 2005
    ..The results of this study demonstrate that predictions about the mechanics and energetics of muscle are possible when sufficient information is known about the specific muscle...
  6. ncbi request reprint In vivo mechanical properties of the human Achilles tendon during one-legged hopping
    G A Lichtwark
    Structure and Motion Laboratory, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
    J Exp Biol 208:4715-25. 2005
    ....
  7. doi request reprint The mechanism for efficacy of eccentric loading in Achilles tendon injury; an in vivo study in humans
    J D Rees
    Department of Sport and Exercise Medicine, Royal National Orthopaedic Hospital, Stanmore, UK
    Rheumatology (Oxford) 47:1493-7. 2008
    ..Our objective was to determine the mechanism for the beneficial effect of eccentric exercise in Achilles tendinopathy...
  8. ncbi request reprint The mechanics of mouse skeletal muscle when shortening during relaxation
    C J Barclay
    School of Physiotherapy and Exercise Science, Griffith University, Gold Coast, PMB50 Gold Coast Mail Centre, Gold Coast, QLD 9726, Australia
    J Biomech 40:3121-9. 2007
    ..It is proposed that unloading the CC, without any change in its overall length, accelerated cross-bridge detachment when shortening was applied during relaxation...
  9. doi request reprint Optimal muscle fascicle length and tendon stiffness for maximising gastrocnemius efficiency during human walking and running
    G A Lichtwark
    School of Physiotherapy and Exercise Science, Griffith University, Gold Coast, QLD, Australia
    J Theor Biol 252:662-73. 2008
    ..Efficiency is maximised when the required volume of muscle is minimised, which may also help reduce limb inertia and basal metabolic costs...
  10. doi request reprint The energetic cost of activation in mouse fast-twitch muscle is the same whether measured using reduced filament overlap or N-benzyl-p-toluenesulphonamide
    C J Barclay
    School of Physiotherapy and Exercise Science, Griffith University, Gold Coast Campus, QLD, Australia
    Acta Physiol (Oxf) 193:381-91. 2008
    ..The purpose of this study was to compare E(A) measured by inhibiting force generation by: (1) the conventional method of reducing contractile filament overlap; and (2) pharmacological inhibition using BTS...