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Lower limb alactic anaerobic power output assessed with different techniques in morbid obesity (Articolo in rivista)
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- Label
- Lower limb alactic anaerobic power output assessed with different techniques in morbid obesity (Articolo in rivista) (literal)
- Anno
- 2002-01-01T00:00:00+01:00 (literal)
- Alternative label
Lafortuna C.L., Fumagalli E., Vangeli V., Sartorio A. (2002)
Lower limb alactic anaerobic power output assessed with different techniques in morbid obesity
in Journal of endocrinological investigation (Testo stamp.)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Lafortuna C.L., Fumagalli E., Vangeli V., Sartorio A. (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- ISI Web of Science (WOS) (literal)
- Titolo
- Lower limb alactic anaerobic power output assessed with different techniques in morbid obesity (literal)
- Abstract
- Short-term alactic anaerobic performance in jumping (5 consecutive
jumps with maximal effort), sprint running (8 m) and stair
climbing (modified Margaria test) has been measured in 75 obese
subjects (body mass index, BMI: 40.3 ± 5.0 kg m-2) and in
36 lean control subjects (BMI: 22.4 ± 3.2 kg m-2) of the same age
and gender distribution. The results showed that obese
subjects attained a significantly lower specific (per unit body mass)
power output both in jumping ( Wspec,j; p < 0.001) and
stair climbing ( Wspec,s; p < 0.001) and run at a significantly lower
average velocity (v; p < 0.001) during sprinting. In spite of
the different motor skilfulness required to accomplish the jumping
and climbing tests, Wspec,s (and hence the vertical
velocity in climbing, vv) was closely correlated with Wspec,j (R2 =
0.427, p < 0.001). In jumping, although the average force
during the positive work phase was significantly higher in obese
subjects (p < 0.001), no difference between the two groups
was detected in absolute power. In stair climbing the absolute power
output of obese resulted significantly higher (18%) than
that of lean controls (p < 0.001). In sprint running, the lower average
horizontal velocity attained by obese subjects entailed
also a different locomotion pattern with shorter step length (Ls; p <
0.001), lower frequency (p < 0.001) and longer foot contact
time with ground (Tc,r; p < 0.001). Wspec,j seems to be a
determinant of the poorer motor performance of obese, being
significantly correlated with: i) the vertical displacement of the centre
of gravity (R2 = 0.853, p < 0.001) in jumping; ii) with vv in
stair climbing and, iii) with Tc,r (R2 = 0.492, p < 0.001), Ls (R2 =
0.266, p < 0.001) and v (R2 = 0.454, p < 0.001) in sprinting.
The results suggest that obese individuals, although partially
hampered in kinetic movements, rely largely on their effective
specific power output to perform complex anaerobic tasks, and they
suffer from the disproportionate excess of the inert mass
of fat. In view also of the sedentary style of life and the consequent
degree of muscle deconditioning accompanying this
condition, it may prove useful to implement rehabilitation
programmes for obesity with effective power training protocols.
(literal)
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