Tennis coach Bill Shine at powerhouse Menlo School has more questions than answers as the girlsРІР‚в„ў West Bay Athletic League season is scheduled to start March 9. He said cotton is too absorbent, suggesting a blend of cotton with other fabrics like polyester. For now, Kravitz recommends multilayer masks with one layer having an antimicrobial agent that kills microorganisms. The exercise science professor has started a study this semester to measure masksРІР‚в„ў effectiveness during exertion. Generally, wearing a mask during training takes an adjustment, said Kravitz, a former San Jose State instructor. In December, the World Health Organization reported that factory-made fabric masks should meet minimum thresholds in three areas: filtration, breathability and fit. РІР‚СљNone of which is easy to do for a long period of time.РІР‚Сњ РІР‚СљWe tried running with a bunch of masks on,РІР‚Сњ he said. Granada High coaches Noel and Jeremy Mattern also experimented with masks on training runs along LivermoreРІР‚в„ўs Arroyo Mocho Trail to help their cross-country team decode the mask mystery. (Jose Carlos Fajardo/Bay Area News Group) GranadaРІР‚в„ўs Alexis Rosenberg, 15, adjusts her mask after competing Saturday during a junior varsity cross-country meet at Dublin High.

The Bells have just started tryouts so Agelson said he does not know how masks might affect his golfers. The golf coaches tried compression masks with copper thread that helps kill bacteria and viruses and Mission cooling gaiters among others, he said.Р”Р„gelson said the masks did not impede swing techniques or performance. РІР‚СљWhen we started we didnРІР‚в„ўt know what one-ply or two-ply meant,РІР‚Сњ he said. Louie Agelson, Bellarmine College Prep golf coach, said he and his staff have sampled masks since June to try to find the best ones for their athletes. The updated guidelines did not specify which mask works best. Last month, officials from the California Interscholastic Federation (CIF) announced masks would be required for most sports even while performing high-intensity activities.Р”Р„mong the exemptions are cross-country, track, swimming and water polo. He said some use surgical masks as well as the N95, a disposable, tight-fitting covering that is not recommended for physical activities because it breaks down when sweat and moisture seep inside. Williams said most of his runners wear cloth masks. Williams said he abandoned his project even though the scientists later said the media misinterpreted their findings. Then Duke researchers published a study saying gaiters and bandanas offered little protection. (Jose Carlos Fajardo/Bay Area News Group)Р”ВublinРІР‚в„ўs Williams had the novel idea of making neck gaiters last summer to help promote wearing masks. Dublin cross-country coach Chris Williams prepares to fire the starting pistol during a junior varsity meet on Saturday.

Dublin high school cross country