UVic Helmet Safety Video Basic info but a good reminder: https://www.instagram.com/reel/CzmrtkoPOpo/?igsh...==

This was in interesting video with important safety information. Because I am interested in the value of used helmets I did a bit more reading and found the articles below to be informative (my brief conclusions after this little bit of research in brackets). One reason that I did a little more reading is because I have been hesitant to provide and encourage the use of second hand helmets at the bike repair sessions at Our Place. In the future, I will not be so hesitant since I conclude that wearing an old helmet is safe and dramatically better than riding without a helmet.

Mikael

ps. Happy to learn more about this. Additional peer reviewed references are welcome.

1a. MIPS (MIPS technology significantly reduces the rotational forces that can lead to concussion)

Hoshizaki, T., Post, A.M., Zerpa, C.E. et al. Evaluation of two rotational helmet technologies to decrease peak rotational acceleration in cycling helmets. Sci Rep 12, 7735 (2022). https://doi.org/10.1038/s41598-022-11559-0

1b. MIPS continued (the impact of MIPS on rotational forces is reduced in models that incorporate a more realistic head ie. One with a scalp that can slide against the skull)

Hoshizaki, T., Post, A.M., Zerpa, C.E. et al. Evaluation of two rotational helmet technologies to decrease peak rotational acceleration in cycling helmets. Sci Rep 12, 7735 (2022). https://doi.org/10.1038/s41598-022-11559-0

2. Damage to helmet after accident (most helmet pass safety protocol after accidents)

Randal P Ching, Diane C Thompson, Robert S Thompson, Daniel J Thomas, William C Chilcott, Frederick P Rivara, Damage to bicycle helmets involved with crashes, Accident Analysis & Prevention, Volume 29, Issue 5, 1997, Pages 555-562, ISSN 0001-4575, https://doi.org/10.1016/S0001-4575(97)00008-0.

Bland, M.L., McNally, C., Cicchino, J.B. et al. Laboratory Reconstructions of Bicycle Helmet Damage: Investigation of Cyclist Head Impacts Using Oblique Impacts and Computed Tomography. Ann Biomed Eng 48, 2783–2795 (2020). https://doi.org/10.1007/s10439-020-02620-y

3. Age of helmet (age of helmet not related to safety of helmet –everything else equal)

DeMarco, A.L., Good, C.A., Chimich, D.D. et al. Age has a Minimal Effect on the Impact Performance of Field-Used Bicycle Helmets. Ann Biomed Eng 45, 1974–1984 (2017). https://doi.org/10.1007/s10439-017-1842-4