Too Much Time In The Sun Can Impair Motor-Cognitive Functioning

Whether you're outside gardening, biking, or going for a jog, spending time outdoors is generally more enjoyable when the sun is shining. But, as painful sunburns may have revealed, more is not always better. According to a recent study, published in Scientific Reports, direct sun exposure on the top of the head has implications beyond just sunburn1—it may also impair motor-cognitive performance. 

The study featured eight healthy male participants between 27 and 41 years old, who underwent motor-cognitive testing three times in three separate settings: room temperature, acute heat exposure (15 minutes), and prolonged exposure (about two hours). Heat radiation was directed on the back, side, and top of each participants' head, as well as the lower body. 

The study is specifically important for anyone who works outside, like in agriculture or construction. Prolonged exposure to sun radiation, especially on the head, may lead to work-related injuries or accidents due to impaired cognitive and motor functioning.

It may also be applicable to people who willingly spend prolonged periods of time outdoors, through activities such as gardening or playing sports.