A comparison of the physiological consequences of head-loading and back-loading for African and European women

@article{Lloyd2010ACO,
  title={A comparison of the physiological consequences of head-loading and back-loading for African and European women},
  author={Ray Lloyd and Bridget M Parr and Simeon E.H. Davies and Ty Partridge and Carlton Brian Cooke},
  journal={European Journal of Applied Physiology},
  year={2010},
  volume={109},
  pages={607-616}
}
The aim is to quantify the physiological cost of head-load carriage and to examine the ‘free ride’ hypothesis for head-load carriage in groups of women differing in their experience of head-loading. Twenty-four Xhosa women [13 experienced head-loaders (EXP), 11 with no experience of head-loading (NON)] attempted to carry loads of up to 70% of body mass on both their heads and backs whilst walking on a treadmill at a self-selected walking speed. Expired air was collected throughout. In a second… 
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