ABSTRACT
Urinary incontinence (UI) among older people is a common problem. Several treatments are available for older people with UI including surgery, drug therapies, and behavioral interventions. Recently, much attention has been placed on the behavioral treatments for UI, including pelvic floor muscle (PFM) exercise, weight loss exercise, and thermal therapy, as they have few risks, no side effects, and are effective. These therapies are often recommended as first line treatments for older people with UI. PFM exercise programs often incorporate alternations of fast contractions that are usually held for about two to three seconds interspersed with relaxation intervals of four to five seconds, and sustained contractions, where participants hold the contraction for about eight to ten seconds followed by a relaxation interval of ten to twelve seconds between the contractions. While exercise periods vary between 3 to 24 weeks, 8 to 12 weeks seems to be the most effective length for PFM exercise. The effectiveness of PFM exercise for the improvement of UI has been validated by many studies, with improvement rates ranging widely from 17 to 84%. Also, research has shown that UI is associated with obesity. Increases in body weight cause increases in abdominal wall weight, which in turn increases intra-abdominal pressure and intra-vesicular pressure. Therefore, abdominal fat reduction from exercise may decrease intra-abdominal pressure, perhaps causing improvements in urethral sphincter contraction and, hence, decreasing UI risk. Evidence reveals that PFM exercise and fitness training targeted at reducing modifiable risk factors are effective strategies for treating UI in older people, regardless of UI type.
ABSTRACT
The purpose of this study was to examine the effects of 9 weeks of resistance training, with and without static acceleration training (AT), on participants' lower-limb muscle strength, power, and physical function. Healthy participants (19 men and 28 women), aged 65-75 years, were assigned to a static AT group (AT, n = 31) or a non-AT control group (C, n = 16). The AT group and the C group trained three times/week for 9 weeks. The AT group performed unloaded static AT and low-intensity aerobic activity. The C group performed dynamic weight-bearing resistance training without whole-body vibration and the same aerobic activity as the AT group. We collected and analyzed data from 45 participants (AT = 30, C = 15) who completed pre- and post-tests. There was no significant Group × Time interaction on any measurements of lower-limb muscle strength, power, or physical function. Significant time effects were observed in the following tests:isokinetic knee extensor and flexor peak torque, 5-time sit-to-stand, usual gait speed, timed up and go, standing time from a long sitting position, and sit and reach. All of these 7 variables showed positive changes. These results suggest that static AT is a suitable training method having approximately the same efficiency as conventional, weight-bearing, dynamic resistance training for improving lower-limb muscle strength and power, mobility, and flexibility in community-dwelling Japanese older adults.