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Your search keyword '"Ability, Influence of age on -- Physiological aspects"' showing total 7 results
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7 results on '"Ability, Influence of age on -- Physiological aspects"'

1. Master your mind: 3 plans to jump-start your smarts

Author

Dustman, Karen Dale

Subjects
Creative ability -- Health aspects, Memory -- Health aspects, Ability, Influence of age on -- Physiological aspects, Consumer news and advice, Health
Published
2000

2. The relationship between aerobic exercise capacity and circulating IGF-1 levels in healthy men and women

Author

Haydar, Ziad R., Blackman, Marc R., Tobin, Jordan D., Wright, Jeanette G., and Fleg, Jerome L.

Subjects
Aerobic exercises -- Physiological aspects, Insulin-like growth factor 1 -- Physiological aspects, Middle aged persons -- Health aspects, Ability, Influence of age on -- Physiological aspects, Health, Seniors
Abstract

Results indicate that aerobic exercise capacity and circulating growth hormone IGF-1 are not independently related in healthy men and women. Data further show that both parameters decline with age.

Published
2000

3. Can older be better? The aging athlete

Author

Levin, Susanna

Subjects
Olympic athletes -- Physiological aspects, Ability, Influence of age on -- Physiological aspects, Athletes -- Training, Health
Published
1992

4. Trunk Sway Measures of Postural Stability During Clinical Balance Tests: Effects of Age

Author

Gill, J., Allum, J. H. J., Carpenter, M. G., Held-Ziolkowska, M., Adkin, A. L., Honegger, F., and Pierchala, K.

Subjects
Posture -- Physiological aspects, Equilibrium (Physiology) -- Research, Ability, Influence of age on -- Physiological aspects, Health, Seniors
Abstract

Background. The major disadvantage of current clinical tests that screen for balance disorders is a reliance on an examiner's subjective assessment of equilibrium control. To overcome this disadvantage we investigated, using quantified measures of trunk sway, age-related differences of normal subjects for commonly used clinical balance tests. Methods. Three age groups were tested: young (15-25 years; n = 48), middle-aged (45-55 years; n = 50) and elderly (65-75 years; n = 49). Each subject performed a series of fourteen tasks similar to those included in the Tinetti and Clinical Test of Sensory Interaction in Balance protocols. The test battery comprised stance and gait tasks performed under normal, altered visual (eyes closed), and altered proprioceptive (foam support surface) conditions. Quantification of trunk sway was performed using a system that measured trunk angular velocity and position in the roll (lateral) and pitch (fore-aft) planes at the level of the lower back. Ranges of sway amplitude and velocity were examined for age-differences with ANOVA techniques. Results. A comparison between age groups showed several differences. Elderly subjects were distinguished from both middle-aged and young subjects by the range of trunk angular sway and angular velocity because both were greater in roll and pitch planes for stance and stance-related tasks (tandem walking). The most significant age group differences (F = 30, p [is less than] .0001) were found for standing on one leg on a normal floor or on a foam support surface with eyes open. Next in significance was walking eight tandem steps on a normal floor (F = 13, p [is less than] .0001). For gait tasks, such as walking five steps while rotating or pitching the head or with eyes closed, pitch and roll velocity ranges were influenced by age with middle-aged subjects showing the smallest ranges followed by elderly subjects and then young subjects (F = 12, p [is less than] .0001). Walking over a set of low barriers also yielded significant differences between age groups for duration and angular sway. In contrast, task duration was the only variable significantly influenced when walking up and down a set of stairs. An interesting finding for all tasks was the different spread of values for each population. Population distributions were skewed for all ages and broadened with age. Conclusions. Accurate measurement of trunk angular sway during stance and gait tasks provides a simple way of reliably measuring changes in balance stability with age and could prove useful when screening for balance disorders of those prone to fall.

Published
2001

5. Influence of Age on Length and Passive Elastic Stiffness Characteristics of the Calf Muscle-Tendon Unit of Women

Author

Gajdosik, Richard L, Vander Linden, Darl W, and Williams, Ann K

Subjects
Ability, Influence of age on -- Physiological aspects, Leg -- Muscles, Tendons -- Physiological aspects
Abstract

Background and Purpose. Therapeutic stretching of the calf muscle-tendon unit is used to increase its length and to ameliorate decreased dorsiflexion range of motion (ROM), but the influence of age on the passive properties of the calf muscle-tendon unit has not been studied adequately. The purpose of this study was to examine the influence of age on length and passive elastic stiffness (PES) characteristics of the calf muscle-tendon unit when stretched through the full, available dorsiflexion ROM. Subjects. Twenty-four younger women (aged 20-39 years), 24 middle-aged women (aged 40-59 years), and 33 older women (aged 60-84 years) participated. Methods. An isokinetic dynamometer was used to passively stretch the right calf muscle-tendon unit from relaxed plantar flexion to the maximal angle of available dorsiflexion at 5 [degrees] [multiplied by] [s.sup.-1]. The maximal passive resistive torque was measured, and passive angle-torque curves were constructed for a full ROM from an initial angle of passive resistive torque to the maximal dorsiflexion angle. The full ROM represented length extensibility. The average PES was calculated for this full stretch ROM and for the first half and the last half of this stretch ROM. The maximal passive dorsiflexion angle, maximal passive resistive torque, angular change for the full stretch ROM, and average PES for the full stretch ROM and the first half and the last half of the full stretch ROM were examined for group differences and their relationships with age. Results. The maximal passive dorsiflexion angle, maximal passive resistive torque, angular change for the full stretch ROM, and average PES within the last half of the full stretch ROM were less for the older women than for the younger women. Age was negatively associated with these variables. Conclusion and Discussion. Decreased maximal passive dorsiflexion ROM in older women was associated with decreased maximal passive resistive torque, decreased calf muscle-tendon unit length extensibility, and decreased average PES within the last half of their available passive dorsiflexion ROM. [Gajdosik RL, Vander Linden DW, Williams AK. Influence of age on length and passive elastic stiffness characteristics of the calf muscle-tendon unit of women. Phys Ther. 1999;79:827-838.], Key Words: Aged, Muscles, Passive elastic stiffness, Women. Decreased length of the calf muscle-tendon unit (MTU), defined as the decrease in dorsiflexion range of motion (ROM) with the knee extended, [...]

Published
1999

6. How old is too old to work?

Author

Roan, Shari

Subjects
Ability, Influence of age on -- Physiological aspects, Employment -- Demographic aspects, Mandatory retirement -- Laws, regulations and rules
Published
1991

7. Beware of the aging driver

Author

Guiteras, G. Patrick

Subjects
Aged automobile drivers -- Physiological aspects, Ability, Influence of age on -- Physiological aspects, Traffic safety -- Evaluation, Raynaud's disease -- Physiological aspects, Connective tissue diseases -- Physiological aspects, Cold -- Physiological aspects, Food/cooking/nutrition, Sports and fitness
Abstract

CENTURIES AGO, the Greek playwright Aristophanes, complained, 'O the days that are gone by, O the days that are no more, When my eye was bold and fearless, And my [...]

Published
1992

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