Peer-reviewed Articles

34 downloads
156 views

Disturbance from the normal developmental trajectory of a trait during growth—the so-called developmental instability—can be observed morphologically through phenodeviants and subtle deviations from perfect symmetry (fluctuating asymmetry). This study investigates...

["Developmental Biology","Evolutionary Studies","Zoology","Anatomy and Physiology","Pathology"]
doi:10.7717/peerj.3359
77 downloads
483 views

A complete understanding of the feeding structures is fundamental in order to study how animals survive. Some birds use long and protrusible tongues as the main tool to collect their central caloric source (e.g., woodpeckers and nectarivores). Hummingbirds are...

["Biophysics","Zoology","Anatomy and Physiology"]
doi:10.7717/peerj.3449
90 downloads
518 views

Background Disturbances in mineral and bone metabolism represent one of the most complex complications of chronic kidney disease (CKD). Serotonin, a monoamine synthesized from tryptophan, may play a potential role in bone metabolism. Brain-derived serotonin exerts...

["Anatomy and Physiology","Nephrology","Neurology"]
doi:10.7717/peerj.3199
367 downloads
1,467 views

Synapsida, the clade including therapsids and thus also mammals, is one of the two major branches of amniotes. Organismal design, with modularity as a concept, offers insights into the evolution of therapsids, a group that experienced profound anatomical transformations...

["Developmental Biology","Evolutionary Studies","Neuroscience","Paleontology","Anatomy and Physiology"]
doi:10.7717/peerj.3119
108 downloads
1,045 views

Background Kettlebell lifting has gained increased popularity as both a form of resistance training and as a sport, despite the paucity of literature validating its use as a training tool. Kettlebell sport requires participants to complete the kettlebell snatch...

["Bioengineering","Anatomy and Physiology","Kinesiology","Orthopedics"]
doi:10.7717/peerj.3111
2 citations
279 downloads
1,432 views

The patella is a sesamoid bone located in the major extensor tendon of the knee joint, in the hindlimb of many tetrapods. Although numerous aspects of knee morphology are ancient and conserved among most tetrapods, the evolutionary occurrence of an ossified patella...

["Evolutionary Studies","Palaeontology","Zoology","Anatomy and Physiology"]
doi:10.7717/peerj.3103
96 downloads
364 views

Background The Non-Recurrent Laryngeal Nerve (NRLN) is a rare embryologically-derived variant of the Recurrent Laryngeal Nerve (RLN). The presence of an NRLN significantly increases the risk of iatrogenic injury and operative complications. Our aim was to provide...

["Anatomy and Physiology","Surgery and Surgical Specialties"]
doi:10.7717/peerj.3012
93 downloads
558 views

In legged terrestrial locomotion, the duration of stance phase, i.e., when limbs are in contact with the substrate, is positively correlated with limb length, and negatively correlated with the metabolic cost of transport. These relationships are well documented...

["Evolutionary Studies","Zoology","Anatomy and Physiology","Kinesiology"]
doi:10.7717/peerj.3008
212 downloads
777 views

Background Manual anthropometric measurements are time-consuming and challenging to perform within acceptable intra- and inter-individual error margins in large studies. Three-dimensional (3D) laser body scanners provide a fast and precise alternative: within a...

["Anthropology","Anatomy and Physiology","Epidemiology","Public Health","Radiology and Medical Imaging"]
doi:10.7717/peerj.2980
146 downloads
513 views

Background Individuals with unilateral lower limb amputation have a high risk of developing knee osteoarthritis (OA) in their intact limb as they age. This risk may be related to joint loading experienced earlier in life. We hypothesized that loading during walking...

["Bioengineering","Anatomy and Physiology","Kinesiology"]
doi:10.7717/peerj.2960
146 downloads
694 views

The ostrich is a highly cursorial bipedal land animal with a permanently elevated metatarsophalangeal joint supported by only two toes. Although locomotor kinematics in walking and running ostriches have been examined, these studies have been largely limited to...

["Animal Behavior","Bioengineering","Anatomy and Physiology","Kinesiology"]
doi:10.7717/peerj.2857
1 citation
6,096 downloads
46,250 views

The purpose of this study was to test the anabolic window theory by investigating muscle strength, hypertrophy, and body composition changes in response to an equal dose of protein consumed either immediately pre- versus post-resistance training (RT) in trained...

["Anatomy and Physiology","Kinesiology","Nutrition"]
doi:10.7717/peerj.2825
199 downloads
750 views

Background Alterations in skeletal muscle function and architecture have been linked to the compromised exercise capacity characterizing chronic heart failure (CHF). However, how passive skeletal muscle force is affected in CHF is not clear. Understanding passive...

["Bioengineering","Computational Biology","Anatomy and Physiology","Cardiology","Kinesiology"]
doi:10.7717/peerj.2447
2 citations
277 downloads
1,107 views

Background Measurement of lumbar spine range of motion (ROM) is often considered to be an essential component of lumbar spine physiotherapy and orthopedic assessment. The measurement can be carried out through various instruments such as inclinometers, goniometers,...

["Anatomy and Physiology","Kinesiology","Orthopedics"]
doi:10.7717/peerj.2355
1,179 downloads
7,982 views

The modified Thomas test was developed to assess the presence of hip flexion contracture and to measure hip extensibility. Despite its widespread use, to the authors’ knowledge, its criterion reference validity has not yet been investigated. The purpose of this...

["Anatomy and Physiology","Kinesiology","Orthopedics"]
doi:10.7717/peerj.2325

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