Exercise effect on dynamic stability in older women: A randomized controlled trial

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      Objective: To determine whether a 12-month program of regular exercise can improve dynamic postural stability in older women.
      Design: Randomized controlled trial of 12 months' duration.
      Setting: Conducted as part of the Randwick Falls and Fractures Study, in Sydney, Australia.
      Participants: One hundred and twelve community-dwelling women aged 60 to 85 years (mean age 71.2, SD = 5.4).
      Outcome Measures: Quantitative measures of dynamic postural stability: maximal balance range and coordinated stability.
      Main Results: Exercise and control subjects were tested before, midway through, and at the end of the trial. The stability measures had good test-retest reliability, and test performances were significantly associated with measures of lower limb muscle strength, reaction time, neuromuscular control, and body sway. At initial testing, exercisers and controls performed similarly in the two stability measures. The mean number of classes attended for the 48 exercise subjects who completed the program was 58.4 (range 26–77). At the end of the trial, the exercise subjects showed significantly improved performance in both the maximal balance range and coordinated stability tests, with no improvement evident in the controls. Improvements in coordinated stability were associated with corresponding improvements in ankle dorsiflexion, hip extension, and hip flexion strength.
      Conclusion: These findings show that exercise can significantly improve dynamic postural stability in older persons and elucidate some possible mechanisms by which such improvements may be mediated.


        • Lord SR
        • Ward JA
        • Williams P
        • Anstey K
        Physiological factors associated with falls in older community-dwelling women.
        J Am Geriatr Soc. 1994; 42: 1110-1117
        • Campbell AJ
        • Borrie MJ
        • Spears GF
        Risk factors for falls in a community-based prospective study of people 70 years and older.
        J Gerontol (Med Sci). 1989; 44: M112-M117
        • Lichtenstein MJ
        • Shields SL
        • Schiave R
        • Burger MC
        Clinical determinants of biomechanics platform measures of balance in aged women.
        J Am Geriatr Soc. 1988; 36: 996-1002
        • Lord SR
        • Caplan G
        • Ward JA
        Balance, reaction time and muscle strength in exercising and non-exercising women: a pilot study.
        Arch Phys Med Rehabil. 1993; 74: 837-840
        • Spirduso WM
        • MacRae HH
        • MacRae PC
        • Prewitt J
        • Osborne L
        Exercise effects on aged motor function.
        Ann N Y Acad Sci. 1988; 515: 363-373
        • Buchner DM
        • Cress ME
        • Wagner EH
        • de Lateur BJ
        • Price R
        • Abrass IB
        The Seattle FICSIT/MoveIt study: the effect of exercise on gait and balance in older adults.
        J Am Geriatr Soc. 1993; 41: 321-325
        • Era P
        Posture control in the elderly.
        Int J Technol Aging. 1988; 1: 166-179
        • Johansson G
        • Jarlno G
        Balance training in 70 year old women.
        Physiother Theor Pract. 1991; 7: 121-125
        • Crilly RG
        • Willems DA
        • Trenholm K
        • Hayes KC
        • Delaquerriere-Richardson LFO
        Effects of exercise on postural sway in the elderly.
        Gerontology. 1989; 35: 137-143
        • Lichtenstein MJ
        • Shields SL
        • Shiavi RG
        • Burger C
        Exercise and balance in aged women: A pilot controlled clinical trial.
        Arch Phys Med Rehabil. 1989; 70: 138-143
        • McMurdo MET
        • Rennie L
        A controlled trial of exercise by residents of old people's homes.
        Age Ageing. 1993; 22: 11-15
        • Parsons D
        • Foster V
        • Harman F
        • Dickinson A
        • Oliva P
        • Westerlind K
        Balance and strength changes in elderly subjects after heavy-resistance training.
        Med Sci Sports Exerc. 1992; 24: S21
      1. Lord SR, Ward JA, Williams P, Strudwick M. The effect of a 12 month exercise program on balance, strength and falls in older women: a randomised controlled trial. J Am Geriatr Soc. In press.

        • Lord SR
        • Mitchel D
        • Williams P
        Effect of water exercise on balance and related factors in older people.
        Aust J Physiother. 1993; 39: 217-222
        • Lord SR
        • Castell S
        The effect of a physical activity program on balance, strength, neuromuscular control and reaction time in older persons.
        Arch Phys Med Rehabil. 1994; 75: 648-652
        • Dietz V
        • Mauritz KH
        • Dichgans J
        Body oscillations in balancing due to segmental stretch reflex activity.
        Exp Brain Res. 1980; 40: 89-95
        • Fitzpatrick RC
        • Gorman RB
        • Burke D
        • Gandevia SC
        Postural proprioceptive reflexes in standing human subjects: bandwidth of response and transmission characteristics.
        J Physiol. 1992; 458: 69-93
        • Duncan PW
        • Studenski S
        • Chandler J
        • Prescott B
        Functional reach: predictive validity in a sample of elderly male veterans.
        J Gerontol (Med Sci). 1992; 47: M93-M98
        • Tinetti ME
        • Speechley M
        • Ginter SF
        Risk factors for falls among elderly people living in the community.
        N Engl J Med. 1988; 319: 1701-1707
        • American College of Sports Medicine
        Guidelines for graded exercise testing and exercise prescription.
        2nd ed. Lea and Febiger, Philadelphia1980
        • Benson H
        The relaxation response.
        William Morrow and Co, New York1975
        • Fitzpatrick RC
        • Taylor JL
        • McCloskey DI
        Ankle stiffness of standing humans in response to imperceptible pertubation: reflex and task-dependent components.
        J Physiol. 1992; 454: 533-547
        • SPSS Inc
        5th ed. SPSS reference guide. SPSS Inc, Chicago1990
        • SPSS Inc
        5th ed. Advanced statistics user's guide. SPSS Inc, Chicago1990
        • Lord SR
        • Ward JA
        Age-related changes in sensori-motor function and balance in community dwelling women.
        Age Ageing. 1994; 23: 452-460