title: Kinematic Adaptations of Forward And Backward Walking on Land and in Water.
abstract: The aim of this study was to compare sagittal plane lower limb kinematics during walking on land and submerged to the hip in water. Eight healthy adults (age 22.1 ± 1.1 years, body height 174.8 ± 7.1 cm, body mass 63.4 ± 6.2 kg) were asked to cover a distance of 10 m at comfortable speed with controlled step frequency, walking forward or backward. Sagittal plane lower limb kinematics were obtained from three dimensional video analysis to compare spatiotemporal gait parameters and joint angles at selected events using two-way repeated measures ANOVA. Key findings were a reduced walking speed, stride length, step length and a support phase in water, and step length asymmetry was higher compared to the land condition (p<0.05). At initial contact, knees and hips were more flexed during walking forward in water, whilst, ankles were more dorsiflexed during walking backward in water. At final stance, knees and ankles were more flexed during forward walking, whilst the hip was more flexed during backward walking. These results show how walking in water differs from walking on land, and provide valuable insights into the development and prescription of rehabilitation and training programs.
authors.affiliation: Department of Physical Education and Sport. Faculty of Sport Sciences, University of Granada, Granada, Spain.
authors.forename: Cristina
authors.initials: C
authors.lastname: Cadenas-Sanchez
authors.affiliation: Department of Physical Education and Sport. Faculty of Sport Sciences, University of Granada, Granada, Spain.
authors.forename: Raúl
authors.initials: R
authors.lastname: Arellano
authors.affiliation: School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom.
authors.forename: Jos
authors.initials: J
authors.lastname: Vanrenterghem
authors.affiliation: Department of Physical Education and Sport. Faculty of Sport Sciences, University of Granada, Granada, Spain.
authors.forename: Gracia
authors.initials: G
authors.lastname: López-Contreras
keywords: aquatic environment; gait; kinematics; land environment
references.citation: Stroke. 2013 Apr;44(4):1179-81
references.pmid: 23471273
references.citation: Gait Posture. 2009 Feb;29(2):199-203
references.pmid: 18829319
references.citation: J Sport Rehabil. 2012 May;21(2):175-81
references.pmid: 22104030
references.citation: Stroke. 2007 Jul;38(7):2096-100
references.pmid: 17510461
references.citation: J Strength Cond Res. 2006 Nov;20(4):811-8
references.pmid: 17194242
references.citation: Clin Sports Med. 1999 Apr;18(2):447-61, ix
references.pmid: 10230578
references.citation: Am Heart J. 2007 Sep;154(3):560.e1-6
references.pmid: 17719306
references.citation: Gait Posture. 2013 Jul;38(3):511-7
references.pmid: 23489952
references.citation: Gait Posture. 2012 Feb;35(2):225-30
references.pmid: 21993483
references.citation: Gait Posture. 2009 Apr;29(3):403-7
references.pmid: 19081722
references.citation: Gait Posture. 2000 Sep;12(1):34-45
references.pmid: 10996295
references.citation: Gait Posture. 2012 Apr;35(4):590-4
references.pmid: 22300728
references.citation: Curr Treat Options Neurol. 2012 Dec;14(6):521-30
references.pmid: 22991142
references.citation: J Electromyogr Kinesiol. 2006 Jun;16(3):250-6
references.pmid: 16111894
references.citation: J Neurophysiol. 1998 Oct;80(4):1868-85
references.pmid: 9772246
references.citation: Gait Posture. 2012 Jan;35(1):66-9
references.pmid: 21903395
references.citation: J Biomech. 2011 Apr 7;44(6):1170-5
references.pmid: 21334630
references.citation: Sports Biomech. 2009 Mar;8(1):96-104
references.pmid: 19391497
references.citation: Sports Biomech. 2006 Jul;5(2):315-40
references.pmid: 16939159
references.citation: J Electromyogr Kinesiol. 2008 Aug;18(4):581-90
references.pmid: 17363276
references.citation: Arch Phys Med Rehabil. 2010 Feb;91(2):208-14
references.pmid: 20159123
references.citation: Gait Posture. 2011 Jan;33(1):29-35
references.pmid: 20971013
references.citation: J Electromyogr Kinesiol. 2008 Jun;18(3):446-54
references.pmid: 17196825
references.citation: J Biomech. 1990;23 (6):617-21
references.pmid: 2341423
references.citation: Gait Posture. 2007 Feb;25(2):222-8
references.pmid: 16713710