We test whether locomotor posture is associated with body mass and lower limb length in humans and explore how body size and posture affect net joint moments during walking. We acquired gait data for 24 females and 25 males using a three-dimensional motion capture system and pressure-measuring insoles. We employed the general linear model and commonality analysis to assess the independent effect of body mass and lower limb length on flexion angles at the hip, knee, and ankle while controlling for sex and velocity. In addition, we used inverse dynamics to model the effect of size and posture on net joint moments. At early stance, body mass has a negative effect on knee flexion (p < 0.01), whereas lower limb length has a negative effect on hip flexion (p < 0.05). Body mass uniquely explains 15.8% of the variance in knee flexion, whereas lower limb length uniquely explains 5.4% of the variance in hip flexion. Both of the detected relationships between body size and posture are consistent with the moment moderating postural adjustments predicted by our model. At late stance, no significant relationship between body size and posture was detected. Humans of greater body size reduce the flexion of the hip and knee at early stance, which results in the moderation of net moments at these joints.

• MeSH
• algoritmy MeSH
• biologické modely MeSH
• biomechanika MeSH
• chůze (způsob) fyziologie   MeSH
• chůze fyziologie   MeSH
• dolní končetina fyziologie   MeSH
• dospělí MeSH
• hlezenní kloub fyziologie   MeSH
• index tělesné hmotnosti MeSH
• kolenní kloub fyziologie   MeSH
• koleno fyziologie   MeSH
• kotník fyziologie   MeSH
• kyčelní kloub fyziologie   MeSH
• lidé MeSH
• lineární modely MeSH
• mladý dospělý MeSH
• postura těla fyziologie   MeSH
• rozsah kloubních pohybů fyziologie   MeSH
• velikost těla fyziologie   MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• mladý dospělý MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH