© 2019 The Authors. Published by Human Kinetics, Inc. This is an Open Access article distributed under the terms of the Creative Commons Attribution License CC BY NC ND 4.0, which permits unrestricted noncommercial distribution of the original work in any medium, provided the original work is properly cited, the new use includes a link to the license, and any changes are indicated. See https://creativecommons.org/licenses/by-nc-nd/4.0/. This license does not cover any third party material that may appear with permission in the article. For commercial use, permission should be requested from Human Kinetics, Inc, through the Copyright Clearance Center (http://www.copyright.com). Permission to adapt, build upon, or transform all or part of the article in a way that is copyrightable must be granted by the author(s) before the modified material can be distributed.
Except where otherwise noted, this item's license is described as © 2019 The Authors. Published by Human Kinetics, Inc. This is an Open Access article distributed under the terms of the Creative Commons Attribution License CC BY NC ND 4.0, which permits unrestricted noncommercial distribution of the original work in any medium, provided the original work is properly cited, the new use includes a link to the license, and any changes are indicated. See https://creativecommons.org/licenses/by-nc-nd/4.0/. This license does not cover any third party material that may appear with permission in the article. For commercial use, permission should be requested from Human Kinetics, Inc, through the Copyright Clearance Center (http://www.copyright.com). Permission to adapt, build upon, or transform all or part of the article in a way that is copyrightable must be granted by the author(s) before the modified material can be distributed.