Quantitative measurements of hip strength in different age groups.

The purpose of this study was to develop a clinically useful method of assessing the strength of the hip musculature and to develop a normal data base with this technique. The strength of 72 subjects aged 20-81 years (37 women and 35 men) was measured through the use of a modified Cybex II with an upright stabilization frame for testing sagittal and frontal plane motions; transverse plane motions of internal and external rotation were tested in the seated position. The subjects were tested at multiple isokinetic speeds and isometric angles. Regardless of age or gender, hip extensors were the strongest muscle group, following by flexors, adductors, abductors, and rotators. As the velocity of exercise increased, the magnitude of the torques produced decreased. Demographically, younger men produced the greatest torques and older women the lowest. The strength values of older men and younger women were similar. The results have clinical implications for objective assessment of strength in pathologic patient populations.

[1]  H J Hislop,et al.  Isokinetic contraction: a new concept of resistive exercise. , 1967, Archives of physical medicine and rehabilitation.

[2]  H J Hislop,et al.  The isokinetic concept of exercise. , 1967, Physical therapy.

[3]  R. Berger,et al.  Effect of maximum loads for each of ten repetitions on strength improvement. , 1967, Research quarterly.

[4]  Relative isometric force of the hip abductor and adductor muscles. , 1968, Physical therapy.

[5]  S. Sepic,et al.  Maximum isometric torque of hip abductor and adductor muscles. , 1968, Physical therapy.

[6]  R C Johnston,et al.  A technique for obtaining measurements of force generated by hip muscles. , 1971, Archives of physical medicine and rehabilitation.

[7]  G. Smidt,et al.  The maximum torque generated by the eccentric, isometric, and concentric contractions of the hip abductor muscles. , 1972, Physical therapy.

[8]  A. Thorstensson,et al.  Force-velocity relations and fiber composition in human knee extensor muscles. , 1976, Journal of applied physiology.

[9]  V. Edgerton,et al.  Muscle force-velocity and power-velocity relationships under isokinetic loading. , 1978, Medicine and science in sports.

[10]  Measurement of strength of hip joint muscles. , 1980, Scandinavian journal of rehabilitation medicine.

[11]  D. Schmidt,et al.  Measurement of cardio-respiratory fitness and body composition in the clinical setting. , 1980, Comprehensive therapy.

[12]  A A Sapega,et al.  The nature of torque "overshoot" in Cybex isokinetic dynamometry. , 1982, Medicine and science in sports and exercise.

[13]  D. Costill,et al.  Isokinetic rehabilitation after surgery , 1982, The American journal of sports medicine.

[14]  Norms for high school football players derived from cybex data reduction computer. , 1984, The Journal of orthopaedic and sports physical therapy.

[15]  A. Williams,et al.  Isokinetic Quadriceps and Hamstring Torque Levels of Adolescent, Female Soccer Players , 1984 .

[16]  A. Pappas,et al.  Rehabilitation of the pitching shoulder , 1985, The American journal of sports medicine.

[17]  Muscular strength and flexibility of two female masters swimmers in the eighth decade of life*. , 1985, The Journal of orthopaedic and sports physical therapy.

[18]  J. Calhoun,et al.  Isokinetic testing of shoulder strength: normal values. , 1985, Archives of physical medicine and rehabilitation.

[19]  W Herzog,et al.  The relation between the resultant moments at a joint and the moments measured by an isokinetic dynamometer. , 1988, Journal of biomechanics.