The analysis included 2,795 participants of the multicase-control (MCC-Spain) study in Spain. The researchers found that the beneficial effect of the physical activity (longest done throughout lifetime) to reduce breast and prostate cancer risk was stronger when the activity was regularly done in the morning (8-10 am). In men, the effect was similarly strong also for evening activity (7-11 pm). Results were unchanged when considering the most strenuous physical activity timing. Effects differed across chronotypes, the preference for sleeping and being active at a certain time of day. Early morning activity (8-10 am) seemed especially protective for late chronotypes, people who generally prefer to be active towards the evening.
Overall the findings of this study indicate that “time of the day of physical activity is an important aspect that may potentiate the protective effect of physical activity on cancer risk”, said Manolis Kogevinas, Scientific Director of the Severo Ochoa Distinction at ISGlobal and coordinator of the study via a press release.
“These results, if confirmed, may improve current physical activity recommendations for cancer prevention. Clear is that everyone can reduce his/her cancer risk simply by being moderately physically active for at least 150 minutes each week.”
Credit: Original article published here.