New Wearable Heart Rate Monitor for Contact Sports and Its Potential to Change Training Load Management. - Yuichi Higuchi; Naoki Saijo; Takako Ishihara; Tomohiro Usui; Takahiro Murakami; Makoto Miyata; Kazuyoshi Ono; Souichiro Usui; Hiroyoshi Togo (EMBC, 2019)