TY  - JOUR
AU  - Spiliopoulou, Styliani I.
A2  - Spiliopoulou, Styliani I.
A2  - Amiridis, Ioannis G.
A2  - Tsigganos, Georgios
A2  - Hatzitaki, Vassilia
DB  - BISp
DP  - BISp
KW  - Frau
KW  - Gleichgewichtsvermögen
KW  - Haltungsstabilität
KW  - Kraftzuwachs
KW  - Leistungssteigerung
KW  - Muskelkraft
KW  - Sportmedizin
KW  - Sprunggelenk
KW  - Trainingseffektivität
KW  - Trainingswirkung
KW  - Trainingswissenschaft
KW  - Untersuchung, empirische
KW  - Untrainierter
KW  - Vibration
KW  - Vibrationstraining
LA  - eng
TI  - Side-alternating vibration training for balance and ankle muscle strength in untrained women
TT  - Seitenalternierendes Vibrationstraining für das Gleichgewicht und die Kraft der Sprunggelenk-Muskulatur bei untrainierten Frauen
PY  - 2013
N2  - Context: Side-alternating vibration (SAV) may help reduce the risk of falling by improving body balance control. Such training has been promoted as a strength-training intervention because it can increase muscle activation through an augmented excitatory input from the muscle spindles. Objective: To determine the effect of SAV training on static balance during 3 postural tasks of increasing difficulty and lower limb strength. Design: Randomized controlled clinical trial. Setting: Laboratory. Patients or Other Participants: A total of 21 healthy women were divided into training (n = 11; age = 43.35 ± 4.12 years, height = 169 ± 6.60 cm, mass = 68.33 ± 11.90 kg) and control (n = 10; age = 42.31 ± 3.73 years, height = 167 ± 4.32 cm, mass = 66.29 ± 10.74 kg) groups. Intervention(s): The training group completed a 9-week program during which participants performed 3 sessions per week of ten 15-second isometric contractions with a 30-second active rest of 3 exercises (half-squat, wide-stance squat, 1-legged half-squat) on an SAV plate (acceleration = 0.91–16.3g). The control group did not participate in any form of exercise over the 9-week period. Main Outcome Measure(s): We evaluated isokinetic and isometric strength of the knee extensors and flexors and ankle plantar flexors, dorsiflexors, and evertors. Static balance was assessed using 3 tasks of increasing difficulty (quiet bipedal stance, tandem stance, 1-legged stance). The electromyographic activity of the vastus lateralis, semitendinosus, medial gastrocnemius, tibialis anterior, and peroneus longus was recorded during postural task performance, baseline and pretraining, immediately posttraining, and 15 days posttraining. Results: After training in the training group, ankle muscle strength improved (P = .03), whereas knee muscle strength remained unaltered (P = .13). Improved ankle-evertor strength was observed at all angular velocities (P = .001). Postural sway decreased in both directions but was greater in the mediolateral (P < .001) than anteroposterior (P = .02) direction. The electromyographic activity of the peroneus longus increased during the sharpened tandem (P = .001) and 1-legged tasks (P = .007). No changes were seen in the control group for any measures. Conclusions: The SAV training could enhance ankle muscle strength and reduce postural sway during static balance performance. The reduction in mediolateral sway could be associated with the greater use of ankle evertors due to their strength improvement. Verf.-Referat
L2  - https://dx.doi.org/10.4085/1062-6050-48.4.03
DO  - 10.4085/1062-6050-48.4.03
SP  - S. 590-600
SN  - 1062-6050
JO  - Journal of athletic training
IS  - 5
VL  - 48
M3  - Gedruckte Ressource
ID  - PU201311007774
ER  -