Petitioner appeals from the district court ruling which affirmed on judicial review a decision of the workers' compensation commissioner awarding petitioner some workers' compensation benefits, but not permanent partial disability benefits. Petitioner contends the court erred in affirming the commissioner's decision because (1) the commissioner failed to consider petitioner's testimony concerning her physical limitations following injury, and instead relied solely on medical evidence; and (2) the commissioner's failure to award permanent partial disability benefits was not supported by substantial evidence. We affirm. X works for Dowd Drug as a pharmacy technician and an accounts payable clerk. on July 2, 1996, her supervisor asked her to deliver a cassette holding medications to the courthouse in Guthrie Center. A woman at the courthouse was to deliver the cassette to a nursing home. X delivered the cassette, picked up an empty cassette to return to the pharmacy, and exited the courthouse. She walked out of the courthouse, stepped off a curb approximately eighteen inches high, heard her ankle pop, and fell to the ground. An ambulance transported X to the Guthrie County Hospital. X-rays revealed a fracture and dislocation of the right ankle. She was transferred to Mercy Hospital in Des Moines, where Dr. Formanek performed an open reduction and internal fixation of the right trimalleolar ankle fracture. Dr. Farber provided follow-up care. He placed X in a short walking cast on July 12, 1996. He released her to return to light-duty work effective July 15, 1996. She returned to light duty on July 17, 1996, and resumed her usual working schedule on July 20, 1996. X saw Dr. Farber again on August 23, 1996. He reported, "she is doing well," but told her "she is always going to have some stiffness and soreness in her ankle as a manifestation of traumatic arthritis. . . . the more she soaks this and works it, the better off she will be. I will plan on seeing her back PRN." Dr. William Koenig, Jr., a specialist in physical medicine and rehabilitation, evaluated X on October 27, 1997. Utilizing the AMA Guides to the Evaluation of Permanent Impairment, 4th edition, he opined X sustained a seventeen percent impairment of the right lower extremity due to residual weakness. Dr. Formanek re-evaluated X on February 26, 1998. He concluded: She has no true restriction in her ankle motion. In reviewing the AMA Guides to the Evaluation of Permanent Impairment, I would opine that she has no residual impairment of her ankle or lower extremity. There is the possibility she will require removal of the internal fixation due to the subcutaneous nature of the distal screws in the fibular area. . . . Otherwise, I do not believe she will need any further future medical care for this. Dr. Koenig disagreed with Dr. Formanek's conclusions: He notes "good subtalar motion", but does not specify degrees of inversion and eversion during the exam. He also notes the range of motion of the ankle is from 10 degrees of dorsiflexion to 50 degrees of plantar flexion. This is normal range of motion for plantar flexion, but normal range for dorsiflexion at the ankle is 20 -30 degrees. Thus, his examination implies some impairment based upon that. Dr. Formanek notes that there is no instability of the ankle and, indeed, I noted none on my exam of October 27, 1997. However, he does not indicate strength testing to be present in his examination, which I used as the basis for my disability rating and is referred to in Table 38 of the AMA Guides to the Evaluation of Permanent Impairment, fourth edition. X filed a petition in arbitration before the Iowa Workers' Compensation Commissioner against Dowd Drug, employer, and Allied Mutual, insurance carrier (hereinafter referred to collectively as "respondents"), for the injury sustained on July 2, 1996. At the hearing before deputy workers' compensation commissioner Teresa Hillary on March 1, 1998, X testified prior to the injury she had no problems with her ankle. At the time of the hearing, she experienced difficulty going down steps, standing for long periods of time, and wearing dress shoes. She was unable to go on long walks with her husband as much anymore, and experienced difficulty dancing due to her stiff ankle. In an arbitration decision filed April 13, 1998, the workers' compensation commissioner found X's injury did not arise out of her employment and ordered X "take nothing from this file." X appealed to the industrial commissioner. the industrial commissioner reversed, finding X's injury compensable as arising out of and in the course of her employment, and ordering respondents to pay healing period benefits and temporary partial disability benefits. The industrial commissioner went on to determine, however, X was not entitled to an award of permanent partial disability benefits because she sustained no loss of function of her right lower extremity. X sought judicial review of the commissioner's determination she sustained no permanent partial disability in connection with the injury to her right ankle. the district court affirmed the industrial commissioner, concluding substantial evidence supported the determination X sustained no permanent disability. X appeals. Standard of Review. Our review is limited to correction of errors of law. Koehler Elec. v. Wills, 608 N.W.2d 1, 3 (Iowa 2000). When we review findings of the industrial commissioner, those findings carry the effect of a jury verdict. Terwilliger v. Snap-On Tools Corp., 529 N.W.2d 267, 271 (Iowa 1995). We will reverse an agency's findings only if, after reviewing the record as a whole, we determine substantial evidence does not support them. Terwilliger, 529 N.W.2d at 271. Evidence is substantial if a reasonable mind would accept it as adequate to reach the given conclusion. St. Luke's Hosp. v. Gray, 604 N.W.2d 646, 649 (Iowa 2000). X contends the commissioner erred as a matter of law in failing to consider non-medical evidence of her residual disability. Respondents argue X's argument is actually the commissioner afforded insufficient weight to her testimony. X presents a close case, but after a careful review of the record, we agree with respondents. the commissioner, in her appeal decision, stated: "The record, including the transcript of the hearing before the deputy and all exhibits admitted into the record, has been reviewed de novo on appeal." The commissioner, therefore, reviewed X's testimony, included in the transcript of the hearing before the deputy. In addition, the commissioner considered Dr. Koenig's report, which contained a recitation of the complaints similar to those made by X at the hearing. The commissioner chose to place greater weight upon the opinion of Dr. Formanek, X's treating physician, in this case. Assessing the weight of the evidence remains within the agency's exclusive domain. Robbennolt v. Snap-On Tools Corp., 555 N.W.2d 229, 234 (Iowa 1996). We must not reassess the weight of the evidence on appeal. Id. the agency's determination must be affirmed if supported by substantial evidence. Terwilliger, 529 N.W.2d at 272. As in Terwilliger, the decision of the commissioner was "sufficiently detailed" and explained so we could follow the process of analysis. Substantial Evidence. the commissioner concluded as follows: Claimant either has no permanent partial disability to her right ankle, or has a 17 percent impairment of the right lower extremity due to residual weakness, according to Dr. Koenig. Dr. Formanek is her treating orthopedic surgeon and Dr. Koenig is a specialist in electrodiagnostic medicine who performed a one-time examination on October 17, 1997. Dr. Koenig opined that Dr. Formanek's report of February 26, 1998 did not alter the opinions expressed in his original report. Dr. Formanek noted upon examination on February 26, 1998 there is no instability of the ankle. Dr. Koenig agreed that during his examination he also noted no instability of the ankle. Dr. Formanek's opinions are given preference over the opinions of Dr. Koenig. Dr. Formanek was the treating physician, and had the opportunity to treat and observe the claimant on more than one occasion, and his evaluation was performed more closer in time to the hearing in this case, giving a more accurate view of the function of claimant's right ankle following the work injury. Therefore, based on Dr. Formanek's opinions, claimant has no loss of function to her right ankle. X contends Dr. Formanek did not follow the AMA Guides and gave no consideration to muscle weakness as provided in the Guides. Again, X's arguments go to the weight given by the commissioner to the evidence. We find substantial evidence in the record, taken as a whole, to support the commissioner's conclusions. As the district court correctly concluded: The Commissioner reviewed all of the evidence before her, including Dr. Koenig's criticisms of Dr. Formanek's impairment evaluations. The Commissioner reasoned that Dr. Formanek, as the treating physician, was a more credible judge of the overall effect of the injury than Dr. Koenig, who examined X long after the injury had taken place. The Commissioner can accept or reject any evidence, medical or non-medical, and give such evidence whatever weight she determines to be justified. (Citations omitted). The Commissioner need not make individual findings with respect to X's various arguments. (Citation omitted.) She referred to the evidence she relied upon and provided detailed reasons for her conclusions. (Citation omitted). The Court will not reassess the weight given to evidence by the Commissioner on appeal. When viewed as a whole, there is substantial evidence in the record to support her determination that X sustained no permanent partial disability.