OBJECTIVE: Despite that the biomechanics of standing and walking bipedally has been extensively studied in nonhuman primates, the morphological features that may constrain, or facilitate, the control of balance and thus of the spontaneous occurrence of @entity146 are poorly known. We aim to test the relationship between body mass distribution and @entity146 using a nonhuman primate species, the @entity3474 , @entity3474 , raised in captivity. MATERIALS AND METHODS: We collected quantitative data on the frequency and duration of bipedalism together with morphometrics on a sample of 22 individuals. We used ontogenetic changes as a natural experiment that provides insights into the impact of morphology. Specifically we focus on 1) quantifying how body mass distribution changes from infancy to adulthood in @entity6599 ; and 2) whether the different patterns of mass distribution influence the behavioral variables, i.e., a) the frequency and b) the duration of bouts of @entity146 realized in different activity contexts. RESULTS: With regard to assisted @entity146 , the duration and frequency of bouts of standing, contrary to walking, are significantly related to age. With regard to unassisted @entity146 , no correlation to age is observed; the bout duration of walking is strongly correlated to body mass and mass distribution, contrary to the frequency of walking as well as the bout duration and frequency of bipedal standing. DISCUSSION: Our results suggest a close relationship between the pattern of mass distribution and the mechanism of balance control in the spontaneous bipedal walking of @entity6599 . The mechanical effects of the pattern of mass distribution on the ability to perform bipedally in extant nonhuman primates are discussed in the context of the evolution toward habitual bipedalism. Am J Phys Anthropol, 2015.    2015 Wiley Periodicals, Inc.

Bipedality from locomotor autonomy to adulthood in captive @entity3474 ( XXXX ): Cross-sectional follow-up and first insight into the impact of body mass distribution.

@entity3474 :: ('9555', 'Species') :: ['olive baboon', 'Papio anubis'] @entity6599 :: ('9557', 'Species') :: ['baboons'] @entity146 :: ('MESH:D001523', 'Disease') :: ['bipedal behaviors', 'bipedal behavior']
@entity3474 :: (9555,Species) :: ['Papio anubis']
