Background: The biomechanical analysis of squatting in individuals from the kinematic prospective would reveal numerous errors in the performance of these movements. These errors essentially arise when the functional integrity of human body is hampered. Individual in the middle aged population are more susceptible to injuries due to incorrect biomechanics during this movements.

Objective: To screen the ability to squat in the middle aged population.

Methods: The observational study included open ended participation between the age of 35-50 years to screen the squatting ability in general population. The outcome measure was squatting assessment and strength of hamstrings and quadriceps muscle by hand held dynamometer.

Result: Significant difference found in deep squat performance and biomechanical movement errors [p<0.05] .Also significant difference found between right and left hamstring and quadriceps with normal and inaccurate squat [p<0.05].

Conclusion: Ability to squat in middle age population is hampered.

Keywords: Squatting, hand-held dynamometer, muscle strength.

1. Gordon W. Hewes, World Dzstribution of Certain Postural Habits. American Anthropologist. 1955;57:231-243.
2. Dahlkvist NJ, Mayo P, Seedhom BB. Forces during squatting and rising from a deep squat. Engineering in medicine. 1982 Apr;11(2):69-76.
3. Solomonow, M, Baratta, R, Zhou, BH, Shoji, H, Bose, W, Beck, C, and D’Ambrosia, R. The synergistic action of the anterior cruciate ligament and thigh muscles in maintaining joint stability. Am J Sports Med.1987; 15: 207–213,
4. Hung, YJ and Gross, MT. Effect of foot position on electromyographic activity of the vastus medialis oblique and vastus lateralis during lower-extremity weight-bearing activities. J Orthop Sports Phys Ther.1999;29: 93–102.
5. Escamilla, RF, Fleisig, GS, Lowry, TM, Barrentine, SW, and Andrews, JR. A three-dimensional biomechanical analysis of the squat during varying stance widths. Med Sci Sports Exerc.2001; 33: 984–998.
6. Bell, DR, Padua, DA, and Clark, MA. Muscle strength and flexibility characteristics of people displaying excessive medial knee displacement. Arch Phys Med Rehabil.2008; 89: 1323–1328.
7. Rasch, PJ and Burke, RK. Kinesiology and Applied Anatomy (5th ed.) 1974. Philadelphia, PA: Lea and Febiger,.
8. Donnelly, DV, Berg, WP, and Fiske, DM. The effect of the direction of gaze on the kinematics of the squat exercise. J Strength Cond Res. 2006 20: 145–150.
9. Li, G, Most, E, DeFrate, LE, Suggs, JF, Gill, TJ, and Rubash, HE. Effect of the posterior cruciate ligament on posterior stability of the knee in high flexion. J Biomech. 2004;37: 779–783.
10. Signorile, JF, Kwiatkowksi, K, Caruso, JF, and Robertson, B. Effect of foot position on the electromyographical activity of the superficial quadriceps muscles during the parallel squat and knee extension. J Strength Cond Res. 1995; 9: 182–187.4
11. van Eijden, TM,Weijs,WA, Kouwenhoven, E, and Verburg, J. Forces acting on the patella during maximal voluntary contraction of the quadriceps femoris muscle at different knee flexion/extension angles. Acta Anat.1987;129: 310–314,
12. Schoenfeld BJ. Squatting kinematics and kinetics and their application to exercise performance. The Journal of Strength & Conditioning Research. 2010 Dec 1;24(12):3497-506.
13. Caterisano A, Moss RE, Pellinger TK, Woodruff K, Lewis VC, Booth W, Khadra T. The effect of back squat depth on the EMG activity of 4 superficial hip and thigh muscles. The Journal of Strength & Conditioning Research. 2002 Aug 1;16(3):428-32.
14. Cook G, Burton L, Hoogenboom B. Pre-participation screening: The use of fundamental movements as an assessment of function–Part 2. North American journal of sports physical therapy: NAJSPT. 2006 Aug;1(3):132.

Gaurav G, Palande

MPT, Department of Sports Physiotherapy

KLEU Institute of Physiotherapy, Belagavi

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