Jacobs Ladder (exercise machine)
Angled climbing ladder used for exercise
From Wikipedia, the free encyclopedia
The Jacobs Ladder is an exercise machine consisting of a runged ladder angled at 40 degrees. It is non-motorized, and thus self-paced.[1] It is named after the Biblical Jacob's Ladder, a ladder to heaven which apperaed in the dream of the patriarch Jacob.[2]
History
Usage
5–10 minutes is considered a beginner duration, 10–20 for moderate, and 20–30 for an advanced level.[1] The Jacobs Ladder works out both the lower and upper body, and it is a favorite among groups such as United States Army Rangers, United States Navy SEALs, and The Biggest Loser contestants.[3] The main muscles activated in the exercise are the quads, glutes, shoulders, and lats.[4] Research from Louisiana State University has concluded that compared to a treadmill, the Jacobs Ladder allows a person to work out harder while expending less effort.[5] Due to the pressure applied on the inner abdominal muscles, the exercise is generally considered unsafe for pregnant women, especially after the 16th week of pregnancy.[6]