Whole body vibration to attenuate reduction of explosive force in chronic kidney disease patients: a randomized controlled trial

Abstract

To investigate whether whole body vibration (WBV) training increases the explosive force of the knee extensors in chronic kidney disease (CKD) patients. Fourteen CKD patients undergoing hemodialysis were randomly allocated in WBV training or Sham group. Explosive force parameters (contractile impulse [CImp] and relative rate of force development [RFDr]) obtained in early (30 and 50 msec) and late phases (100 and 200 msec) of the knee extensors force/time curve. CImp and RFDr obtained at the early phase of force/time curve reduced after the intervention period, with a smaller decline for WBV (CImp at 50 msec [~−15% and −51%, P=0.038], RFDr at 30 msec [~−22% and −52%, P=0.044] and RFDr at 50 msec [~−11% and −54%; P=0.008]). In the late phase there was a lower decline for WBV group compared to Sham group, respectively: CImp: 100 msec (~−8% and −55%, P=0.025), 200 msec (~−3% and −46%, P= 0.025); RFDr 100 msec (~0.01% and −56%, P=0.033), 200 msec (~−5% and −36%, P=0.004). Three months of WBV training may attenuate the explosive force reduction in CKD patients.

Muscle power and physical dysfunction: A model for tailoring rehabilitation in chronic kidney disease

“…4,6,18 The ability to generate force quickly is critical in situations such as impending falls and postural adjustments. 5 Although muscle power shares several properties with muscle strength (e.g., muscle cross-sectional area), it is influenced by numerous additional neuromuscular properties (e.g., fibre type composition, fibre length, fibre pennation angle, motor unit firing frequency, discharge doublets). 24 We found muscle power was a significant predictor of physical function and the ability to perform activities of daily life; these associations were independent of measures of muscle mass.…”

“…Muscle power reflects the ability of the motor system to perform mechanical work per unit of time 4,6,18 . The ability to generate force quickly is critical in situations such as impending falls and postural adjustments 5 . Although muscle power shares several properties with muscle strength (e.g., muscle cross‐sectional area), it is influenced by numerous additional neuromuscular properties (e.g., fibre type composition, fibre length, fibre pennation angle, motor unit firing frequency, discharge doublets) 24 .…”

“…6 In many activities, motor responses, such as the prevention of falls, are characterized by rapid muscle contractions. 5 The decline of muscle power with age exceeds both the rate of muscle mass and strength decline. 7 Muscle power has been shown to have stronger associations with functional limitations and mortality than sarcopenia in older adults 8,9 and is positively associated with the ability to perform activities of daily life.…”

“…4 This is because there are other components more relevant to functional ability, particularly the neuromuscular system. 4,5 Mechanical muscle power is the product of muscular force and velocity of contraction. 6 In many activities, motor responses, such as the prevention of falls, are characterized by rapid muscle contractions.…”

Does whole body vibration exercise improve oxidative stress markers in women with fibromyalgia?

“…Whole body vibration (WBV) may represent an alternative strategy for the treatment of symptoms associated with FM (14,15) and other chronic inflammatory diseases (16 –18). The vibratory platform generates a mechanical stimulus that increases the muscles gravitational load (14), producing a defensive response from the muscular system to increase stiffness and reduce vibration transmission in the body.…”