A spotter’s gender does not influence bench press performance during a 1-RM testing protocol, according to a 2019 report in the Journal of Strength and Conditioning Research (2019; doi:10.1519/JSC.0000000000003156). This is true whether the weightlifter is male or female. Twenty male and female weight-trained subjects participated in the study without knowledge of the true intent.

Separate research, also conducted in 2019, confirmed that spotters improve weightlifting performance in general.