systematic changes in behavior over time, that is, the behavioral dynamics. Nonlinear measures of variability identify only the structured variability that comprises those behavioral dynamics. Consider the activity of walking as a rhythmic pattern that is very stable, that is, has a strong cyclic behavioral
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Distinguishing Two Types of Variability in a Sit-to-Stand Task
Cameron T. Gibbons, Polemnia G. Amazeen, and Aaron D. Likens
Associations of Recreational and Nonrecreational Physical Activity and Body Weight Change on Cardiovascular Disease Mortality During the Obesogenic Transition in the United States: National Health and Nutrition Examination Survey Follow-up Study
Birinder S. Cheema, Zumin Shi, Rhiannon L. White, and Evan Atlantis
active category (ie, the “moderate–vigorous” group) while the remaining group (little or no/quite inactive) was categorized into the “inactive” group. To examine changes in both recreational and nonrecreational activity, values were recoded into stable (“moderate–vigorous stable” or “inactive stable”; ie
Biomechanical Outcomes Due to Impact Loading in Runners While Looking Sideways
Anamaria Laudet Silva Mangubat, Janet Hanwen Zhang, Zoe Yau-Shan Chan, Aislinn Joan MacPhail, Ivan Pui-Hung Au, and Roy Tsz-Hei Cheung
During locomotion, a stable gaze is necessary to obtain visual information about our environment and maintain a constant visual field. 1 Our gaze guides our bodies to certain destinations, avoids obstacles, alters speed, accommodates different types of terrain, and allows us to maintain dynamic
Sustaining Regular Exercise During Weight Loss Maintenance: The Role of Consistent Exercise Timing
Leah M. Schumacher, J. Graham Thomas, Rena R. Wing, Hollie A. Raynor, Ryan E. Rhodes, and Dale S. Bond
same time (eg, afternoon–afternoon) at follow-up were coded as remaining stable in timing. To be considered stable in timing, participants were required to be exercising consistently at the same time of day at follow-up rather than to simply be classified as a temporally consistent exerciser to avoid
Revisiting Perfectionism in High-Level Ballet: A Longitudinal Collective Instrumental Case Study
Sanna M. Nordin-Bates, Martin Aldoson, and Charlotte Downing
. In Figure 2 , the first indication of such differences is illustrated via the questionnaire findings from 2015 and 2020. As shown, Elis’ PS changed from low/moderate (2.8) to moderate/high (4.0) and his PC score from moderate/high (4.0) to low/moderate (2.8). Petra was very stable in her
Activation of Scapular and Lumbopelvic Muscles During Core Exercises Executed on a Whole-Body Wobble Board
Andrea Biscarini, Samuele Contemori, and Giuditta Grolla
under stable conditions, strength exercises performed on unstable surfaces yield higher core-muscle activation and perceived exertion, but lower force generation, power output, movement velocity, and range of motion. 17 – 21 However, the use of unstable surfaces can significantly improve neuromuscular
Does a Perturbation-Based Gait Intervention Enhance Gait Stability in Fall-Prone Stroke Survivors? A Pilot Study
Michiel Punt, Sjoerd M. Bruijn, Ingrid G. van de Port, Ilona J.M. de Rooij, Harriet Wittink, and Jaap H. van Dieën
-prone stroke survivors. Here, we define stable gait as gait that does not result into falls despite of perturbations. 6 In comparison to conventional treadmill training of gait stability, perturbation-based training (PBT) may offer a more ecologically valid training approach. Meaning that the exercises
Complexity of Center of Pressure in Postural Control for Children With Autism Spectrum Disorders Was Partially Compromised
Yumeng Li, Melissa A. Mache, and Teri A. Todd
Instrument Corp, Winterthur, Switzerland). For all tests, the participants were instructed to stand as stationary as possible with arms relaxed on the side under 4 conditions in a randomized order: (1) eyes open and standing on a stable surface (force plate), (2) eyes open and standing on a compliant surface
Exercising on Different Unstable Surfaces Increases Core Abdominal Muscle Thickness: An Observational Study Using Real-Time Ultrasound
Timothy J. Gibbons and Marie-Louise Bird
on stable surfaces. 6 , 9 , 10 This is particularly true of contralateral abdominal muscle activity during single-leg exercises. 6 The Oov (Figure 1 ) is a novel apparatus designed to conform to the inherent curvature of the spine while providing an unstable surface during supine exercise. The Oov
Profiling Single-Leg Balance by Leg Preference and Position in Rugby Union Athletes
Scott R. Brown, Matt Brughelli, and Seth Lenetsky
(MLSI), and overall stability index (OSI; a combination of the APSI and MLSI). These three indices represent variations around a “zero point” established prior to testing when the platform is in a stable position ( Arnold & Schmitz, 1998 ). Additionally, the Biodex Balance SD system also calculates the
