The Effect of Synchronous Beats on Human Gait during Unilateral

Shoulder Load Carriage

Swetambri Sonal Atreya

Prof. Sneh Anand Faculty of Sciences, Jamia Hamdard, New Delhi Centre for Biomedical Engineering, IIT DelhiBiomedical Engineering Unit, AIIMS New Delhi 

Load carrying positions

Muscle strain

Distortion of the natural curve of the spine

Rounding of the shoulders

Unloaded Loaded

Effect of Load Carriage

4

Human Gait and Music

6

Parkinson's

Stroke

Applications of Music Therapy in Rehabilitation

Effect of Music

7

Music & rhythm

Accompany motor activity

Influence emotional & psychological aspects

Improves temporal stride symmetry

Treat disorders like stroke patients, Parkinson's disease,

cerebral palsy

Purpose of the study

8

Protocol

Image Courtesy

Prosthetics and Orthotics Workshop

Department of Physical Medicine and Rehabilitation, AIIMS New Delhi

Stimuli

• Subjects were made to listen to ascending auditory beats; slow beats (60beats/min), medium beats (100 beats /min), fast beats (120 beats/min).

• Beats were recorded using a synthesizer/sequencer.

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Analysis

• All the data was acquired at the 100Hz sampling frequency• Data processing and analysis performed on MATLAB (The

Math Works Inc, US).• Karl Pearson Coefficient of Correlation

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Results

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Correlation between normal walk and 60 beats /min

Correlation between normal walk and 100 beats /min

 

Correlation between normal walk and 120 beats /min

80 85 90 95 100 105 110 115 120 12590

95

100

105

110

115

120

125

130

135

140

stride length(cm)normal

strid

e le

ngth

(cm

)60b

eats

/min

r = 0.7357

80 85 90 95 100 105 110 115 120 12580

90

100

110

120

130

140

150

stride length(cm)normal

strid

e le

ngth

(cm

)100

beat

s/m

in

r=0.7651

80 85 90 95 100 105 110 115 120 12570

80

90

100

110

120

130

140

stride length(cm)normal

strid

e le

ngth

(cm

)120

bea

ts/m

in

r= 0.1610

• Highest positive correlation was found with 100 beats/ min as compared to other tempi(r=0.7651,p<0.05).

• Auditory rhythm has a comprehensive effect on improvement of gait pattern (stride length) and surpasses the effect of load carriage.

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References

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Sheir-Neiss GI et.al .The association of backpack use and back pain in adolescents. Spine 2003; 28(9):922–30.

Iwanaga M., Relationship between heart rate and preference for tempo of music, Percept Mot Skills 1995; 81(2):435-40.

Hamish W. Mackie, The effect of simulated school load carriage configuration, Applied Ergonomics 2005

Grimmer KA, Williams MT, Gill T, The association between adolescent head-on-neck posture, backpack weight and anthropometric features. Spine 1999;24(21):2262-7

Pascoe DD, Pascoe DE, Wang YT, Shim DM, Kim CK. Influence of carrying book bags on gait cycle and posture of youths. Ergonomics 1997;40(6):631-41

MM Panjabi, TR Oxland "Mechanical behaviour of the human lumbar and lumbosacral J Bone joint Surg Am. 1994;76:413-424

Malhotra MS, Sen Gupta J. Carrying of school bags by children. Ergonomics 1965;1:55-60

Introduction Carrying heavy loads is known to cause a change in the gait.

Examined the gait pattern in subjects carrying backpack of 12% of their bodyweight while walking on a force platform.

Relationship between gait and synchronous beats was explored . Determination of the impact of auditory rhythm in reducing effect of load on

gait parameters (stride length) and eventually making them symmetric.

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