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Principles of Core Stabilization for Athletic Populations

R. Barry Dale and Ryan Lawrence

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The Adoption and Spread of a Core-Strengthening Exercise Through an Online Social Network

Sherry L. Pagoto, Kristin L. Schneider, Jessica Oleski, Brian Smith, and Michael Bauman


The present feasibility study describes engagement and spread of a Twitter-based core-strengthening challenge.


A challenge that entailed completing a core-strengthening exercise using a hashtag (#PlankADay) was circulated via Twitter. This study surveyed users who joined during the first 2 months of the challenge to describe their characteristics, including social support for exercise and to what extent they invited others to join. The study continued to track total users for 10 months.


Of 407 individuals who joined in the first 2 months, 105 completed surveys. Among these, 81% were female and 86% white and mean age was 35.8. 72% participated for at least 1 month and 47% participated for at least 2 months. Survey participants reported that the challenge increased their enjoyment of abdominal exercise. Of the 68% of participants who invited others to participate, 28% recruited none, 66% recruited 1–5 users, and 6% recruited 10 or more users. Participants reported that online friends provided as much positive social support for exercise as family and in-person friends. In 14 months, 4941 users produced 76,746 tweets and mean total tweets per user was 15.86 (SD = 75.34; range = 1–2888).


Online social networks may be a promising mechanism to spread brief exercise behaviors.

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Clinical Assessment and Thickness Changes of the Oblique and Multifidus Muscles Using a Novel Screening Tool and Exercise Program: A Randomized Controlled Trial

Brian Catania, Travis Ross, Bradley Sandella, Bradley Bley, and Andrea DiTrani Lobacz

dynamic, rotation-based exercises to a traditional exercise program and measure changes in clinical assessment scores and muscle thickness. Determining the influence of abdominal exercise selection on muscle activation is important to clinicians who incorporate training into interventions designed for

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Effects of Progressive Resistance Training on Obesity Indices in Polycystic Ovary Syndrome and the Relationship With Telomere Length

Gislaine S. Kogure, Cristiana L. Miranda-Furtado, Daiana C.C. Pedroso, Victor B. Ribeiro, Matheus C. Eiras, Rafael C. Silva, Lisandra C. Caetano, Rui A. Ferriani, Rodrigo T. Calado, and Rosana M. dos Reis

, front latissimus dorsi pull down, leg curl, lateral raise, leg press (45°), triceps pulley, calf leg press, arm curl, and abdominal exercise. The program was executed in alternating segments. A linear periodization training approach was used, with decreasing volume of repetitions and increasing