We analyzed the effects of gravitational unloading on muscular fatigability and the effectiveness of resistive vibration exercise to counteract these changes. Changes in knee extensor fatigability as a consequence of 8 weeks of horizontal bedrest with or without daily resistive vibration exercise were evaluated in 17 healthy male volunteers. Bedrest increased fatigability (% decrease in maximal...

THE EFFECT OF BEDREST ON VARIOUS PARAMETERS OF PHYSIOLOGICAL FUNCTION PART Vll l . THE EFFECT ON THE CARDIOVASCULAR TOLERANCE TO PASSIVE TILT By C. Vallbona, M.D., D. Cardus, M.D., F. B. Vogt, M.D. , and W. A. Spencer, M. D. 2 1 1 5 s . . This study was carried out to evaluate the effect of short term (3 days) and long term (14 days) bedrest on the cardiac tolerance to passive t i l t . It show...

Space flight and the accompanying diminished muscular activity lead to a loss of body nitrogen and muscle function. These losses may affect crew capabilities and health in long-duration missions. Space flight alters protein metabolism such that the body is unable to maintain protein synthetic rates. A concomitant hypocaloric intake and altered anabolic/catabolic hormonal profiles may contribute...

Orthostatic challenge produced by upright posture may lead to syncope if the cardiovascular system is unable to maintain adequate brain perfusion. This review outlines orthostatic intolerance related to the aging process, long-term bedrest confinement, drugs, and disease. Aging-associated illness or injury due to falls often leads to hospitalization. Older patients spend up to 83% of hospital a...

The effects of earlier surgery and shorter bedrest on the outcome in 338 consecutive patients with subarachnoid haemorrhage admitted within five years to a primary emergency hospital were evaluated. Mortality from rebleeds diminished more than surgical mortality increased. Shortened bedrest did not increase the number of rebleeds in patients not operated on. The combined mortality from rebleed ...

Abstract Bedrest is associated with cardiovascular and cerebrovascular changes that are linked to a greater prevalence of orthostatic intolerance; however, much what we know from bedrest trials comes young adults. How older adults respond extended periods activity restriction not well understood. The current work tested the hypothesis impaired control cerebral blood flow in following could be a...

As part of the 2nd Berlin BedRest Study (BBR2-2), we investigated the pattern of muscle atrophy of the postero-lateral hip and hamstring musculature during prolonged inactivity and the effectiveness of two exercise countermeasures. Twenty-four male subjects underwent 60 days of head-down tilt bedrest and were assigned to an inactive control (CTR), resistive vibration exercise (RVE), or resistiv...

WHY: Hospitalization poses a risk for altered functional status for older adults due to acute illness, decreased mobility, the negative effects of bedrest such as pressure ulcers, pain, dehydration and/or malnutrition, medication side effects, and associated hospital treatment measures such as invasive lines and catheters that limit mobility. Low levels of mobility and bedrest are common occurr...

background:  pregnancy in a woman's life is a unique experience. but due to high risk pregnancy and the need to rest in bed, the women and her family are faced with different challenges and needs. the inability to manage these needs will result in crisis and understanding the needs of pregnant women during bed rest is essential to provide comprehensive health care for them. so this qualita...