Brookfield Fitness Studio Bets on Strength Training for Women Over 40

Inside a converted warehouse space off Moorland Road in Brookfield, the equipment tells its own story: rows of barbells, power racks, and weight plates, with almost none of the cardio machines that typically dominate suburban gym floors. Ironwood Strength Studio was built with a single population in mind, women over forty looking to build serious strength rather than simply burn calories.

Owner Colette Rasmussen, a former competitive powerlifter, opened the studio two years ago after growing frustrated with what she describes as a persistent gap in the local fitness market. "There were plenty of options for group cardio classes and plenty of traditional gyms, but almost nowhere that treated midlife women as capable of serious strength work," Rasmussen said. "A lot of the messaging aimed at this age group is still about staying small, not getting stronger."

Addressing a Specific Physiological Need

Rasmussen said her programming is built around research on declining bone density and muscle mass that accelerates for many women during and after perimenopause. Resistance training, particularly progressive barbell work, has increasingly been recommended by physicians as a tool for maintaining bone health, and Rasmussen said that clinical framing has become central to how she markets the studio.

"We talk about bone density and functional strength as much as we talk about how anyone looks," she said. "A lot of our members come in initially because a doctor mentioned early signs of osteopenia, not because they wanted to change their appearance."

The studio currently has around ninety active members, most in their forties, fifties, and sixties, training in small group sessions capped at six people to allow close coaching on lifting form. Rasmussen said several members had never touched a barbell before joining, while others arrived with backgrounds in college athletics and were looking for a space that would push them harder than a typical suburban gym.

A Slower, Deliberate Growth Model

Unlike fitness franchises that expand quickly across the Milwaukee suburbs, Rasmussen has kept Ironwood to a single location, citing the coaching-heavy model as difficult to scale without diluting quality. She employs three coaches, all certified in strength and conditioning, and requires new members to complete a multi-session onboarding process before joining group classes.

"I'd rather grow slowly and keep people safe under the bar than open three locations and have coaches who don't really know each member's history," Rasmussen said.

Member Denise Okonkwo, a 54-year-old Brookfield resident who joined after a bone density scan flagged early osteopenia, said the studio changed her relationship with exercise entirely. "I spent years doing elliptical machines because that's what I thought fitness was supposed to look like at my age," Okonkwo said. "Now I deadlift more than my son does, and my last scan actually showed improvement."

Rasmussen said she is exploring a partnership with a Waukesha County orthopedic practice to offer referral-based introductory sessions for patients recovering from fractures or dealing with early bone density concerns, a move she hopes will formalize the connection between clinical recommendations and the kind of training her studio already offers.