title: Both anticipatory and compensatory postural adjustments are adapted while catching a ball in unstable standing posture.
abstract: The main objective of this study was to analyze the role of balance exercises on anticipatory (APA) and compensatory (CPA) postural adjustments in different conditions of postural stability. Sixteen subjects were required to catch a ball while standing on rigid floor, trampoline and foam cushion surfaces. Electromyographic activities (EMG) of postural muscles were analyzed during time windows typical for APAs and CPAs. Overall there were a reciprocal activation of the muscles around the ankle and co-activations between ventral and dorsal muscles of the thigh and trunk during the catching a ball task. Compared to the rigid floor, the tibialis anterior activation was greater during the trampoline condition (CPA: p = 0.006) and the soleus muscle inhibition was higher during foam cushion condition (APA: p = 0.001; CPA: p = 0.007). Thigh and trunk muscle activities were similar across the conditions. These results advance the knowledge in postural control during body perturbations standing on unstable surfaces.
authors.affiliation: Santa Catarina State University, Health Sciences and Sport Center, Department of Physical Therapy, Florianópolis, Santa Catarina, Brazil.
authors.forename: Vanessa
authors.initials: V
authors.lastname: Scariot
authors.affiliation: Santa Catarina State University, Health Sciences and Sport Center, Human Movement Sciences Graduation Program, Florianópolis, Santa Catarina, Brazil; University of Calgary, Kinesiology, Calgary, Alberta, Canada.
authors.forename: Jaqueline L
authors.initials: JL
authors.lastname: Rios
authors.affiliation: Santa Catarina State University, Health Sciences and Sport Center, Human Movement Sciences Graduation Program, Florianópolis, Santa Catarina, Brazil.
authors.forename: Renato
authors.initials: R
authors.lastname: Claudino
authors.affiliation: Santa Catarina State University, Health Sciences and Sport Center, Department of Physical Therapy, Florianópolis, Santa Catarina, Brazil.
authors.forename: Eloá C
authors.initials: EC
authors.lastname: Dos Santos
authors.affiliation: Santa Catarina State University, Health Sciences and Sport Center, Department of Physical Therapy, Florianópolis, Santa Catarina, Brazil.
authors.forename: Hanna B B
authors.initials: HBB
authors.lastname: Angulski
authors.affiliation: Santa Catarina State University, Health Sciences and Sport Center, Department of Physical Therapy, Florianópolis, Santa Catarina, Brazil; University of Kansas Medical Center, School of Health Professions, Department of Physical Therapy and Rehabilitation Science, Kansas City, USA. Electronic address: msantos@kumc.edu.
authors.forename: Marcio J
authors.initials: MJ
authors.lastname: Dos Santos
mesh_terms: D000328:Adult; D004576:Electromyography; D005081:Exercise Therapy / Q000379:methods*; D005260:Female; D006801:Humans; D007866:Leg / Q000502:physiology; D008297:Male; D009119:Muscle Contraction; D018482:Muscle, Skeletal / Q000502:physiology*; D004856:Postural Balance / Q000502:physiology*; D060726:Torso / Q000502:physiology
keywords: Ball throwing; Catching; Electromyography; Postural control; Rehabilitation