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  • Author: Michael E. Miller x
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Ken Pitetti, Ruth Ann Miller and E. Michael Loovis

Male youth (8–18 years) with intellectual disability (ID) demonstrate motor proficiency below age-related competence capacities for typically developing youth. Whether below-criteria motor proficiency also exists for females with ID is not known. The purpose of this study was to determine if sex-specific differences exist in motor proficiency for youth with ID. The Bruininks-Oseretsky Test of Motor Proficiency was used to measure motor proficiency: six items for upper limb coordination, seven items for balance, and six items for bilateral coordination. One hundred and seventy-two (172) males and 85 females with ID but without Down syndrome were divided into five age groups for comparative purposes: 8–10, 11–12, 13–14, 15–16, and 17–21 years. Males scored sufficiently higher than females to suggest that sex data should not be combined to established Bruininks-Oseretsky Test of Motor Proficiency standards for upper limb coordination, balance, and bilateral coordination subtests.

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Aimee E. Roth, Michael G. Miller, Marc Ricard, Donna Ritenour and Brenda L. Chapman


It has been theorized that aquatic balance training differs from land balance training.


To compare the effects of balance training in aquatic and land environments.


Between-groups, repeated-measures design.


Biomechanics laboratory and pool.


24 healthy subjects randomly assigned to aquatic (n = 8), land (n = 10), or control (n = 6) groups.


Four weeks of balance training.

Main Outcome Measures:

Balance was measured (pre, mid, post, follow-up). COP variables: radial area, y range, x range in single leg (SL), tandem (T), single leg foam (SLF), and tandem form (TF) stance.


A significant condition × time interaction for x range was found, with improvements for SL, SLF, and TF. Radial area improved, with post-test 1.01 ± .23 cm2 and follow-up 1.06 ± .18 cm2 significantly lower than pretest 1.18 ± .23 cm2. Y range significantly improved, with posttest (4.69 ± 1.02 cm2) lower than pretest (5.89 ± 1.26 cm2). The foam conditions (SLF & TF) were significantly different from non-foam conditions (SL & T) for all variables.


Results of this study show that balance training can effectively be performed in both land and aquatic environments.