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T Ackland

Publications and source records attributed to T Ackland.

8 recordsLinked to original sources
PubMed2001

Resistance training over 2 years increases bone mass in calcium-replete postmenopausal women.

Understanding the stress/strain relationship between exercise and bone is critical to understanding the potential benefit of exercise in preventing postmenopausal bone loss. This study examined the effect of a 2-year exercise intervention and calcium supplementation (600 mg) on bone mineral density (BMD) in 126 postmenopausal women (mean age, 60 +/- 5 years). Assignment was by block randomization to one of three groups: strength (S), fitness (F), or nonexercise control (C). The two exercise groups completed three sets of the same nine exercises, three times a week. The S group increased the loading, while the F group had additional stationary bicycle riding with minimal increase in loading. Retention at 2 years was 71% (59% in the S group, 69% in the F group, and 83% in the C group), while the exercise compliance did not differ between the exercise groups (S group, 74 +/- 13%; F group, 77 +/- 14%). BMD was measured at the hip, lumbar spine, and forearm sites every 6 months using a Hologic 4500. Whole body BMD also was measured every 6 months on a Hologic 2000. There was no difference between the groups at the forearm, lumbar spine, or whole body sites. There was a significant effect of the strength program at the total (0.9 +/- 2.6%; p < 0.05) and intertrochanter hip site (1.1 +/- 3.0%; p < 0.01). There was a significant time and group interaction (p < 0.05) at the intertrochanter site by repeated measures. This study shows the effectiveness of a progressive strength program in increasing bone density at the clinically important hip site. We concluded that a strength program could be recommended as an adjunct lifestyle approach to osteoporosis treatment or used in combination with other therapies.

Aged↗
PubMed1998

Functional recovery and timing of hospital discharge after primary total hip arthroplasty.

BACKGROUND: Early discharge programmes in hospitals are encouraged to increase financial efficiency and bed availability, but standards of clinical care must not be compromised. Criteria for safe hospital discharge must be established and objective data are needed to assess how rapidly patients can achieve these discharge criteria. METHODS: A prospective study was performed on 65 patients (mean age = 71 years) scheduled for primary total hip arthroplasty (THA). The Modified Barthel Index (MBI) was measured pre-operatively and postoperatively at set intervals to asses recovery of function after THA. A score of 90 out of a possible 100 was used as a discharge criterion and indicated that the patient was functionally independent for safe hospital discharge. In addition, a combined score for thigh flexion and extension isokinetic peak strength was recorded for each patient before and after surgery. The number and nature of comorbidities and complications were also recorded. RESULTS: The length of hospital stay in this sample varied from 5 to 39 days. The MBI scores increased rapidly between days 3 and 5, then began to plateau from day 8 onwards. Based on the MBI, 58% of patients were fit for discharge at or before day 8. The remainder were fit for discharge from day 10 onwards (mean = 14.2 days). The latter group who required an extended hospital stay were older (P = 0.003), had more identified comorbidities (P = 0.01) and were weaker in their hip musculature prior to surgery (P = 0.001), compared to those who were discharged by day 8. A logistic regression analysis indicated that the pre-operative MBI score and hip strength score were strong predictors of timing for hospital discharge. CONCLUSIONS: A clinical pathway with functional milestones laid out over 8 days would be an appropriate criterion for the discharge of the majority of patients. However, approximately 40% of the patients presented in this study required a longer hospital stay before the criteria for safe discharge could be achieved. These patients can be identified pre-operatively by screening their MBI and composite hip strength scores.

Aged↗
PubMed1997

Patient variability and the design of clinical pathways after primary total hip replacement surgery.

Objective data are necessary for the design of clinical pathways of total hip replacement (THR) surgery. The functional recovery and timing for hospital discharge was studied in a consecutive series of 65 patients undergoing primary THR. The Modified Barthel Index (MBI) was serially measured after surgery to assess the recovery of functional independence. A MBI score of 90 out of a maximum of 100 is required before patients are fit for hospital discharge. The length of hospital stay varied from 5 days to 39 days. Fifty-eight percent of patients were fit for discharge by day 8, and 42% required 10 days or longer (mean = 14.2 days) in hospital. Patients in these two groups differed significantly with respect to age, the number of associated comorbidities, preoperative and early MBI scores, and muscle strength parameters. These data suggest that there is wide variability in patients presenting for primary THR. One single clinical pathway may not accommodate this patient variability, whereas two clinical pathways (one with a day 8 and another with an extended [day 10 +] time frame) may be more appropriate.

Activities of Daily Living↗
PubMed1992

A clinical exercise system for paraplegics using functional electrical stimulation.

A low cost clinical exercise system was developed for the spinal cord injured, based on a bicycle ergometer and electrical stimulation. A pilot project was conducted, using the system, to examine the effects of stimulation induced cycling in long term paraplegics. The project comprised 2 phases of exercise, a strengthening phase involving a 12 week programme of electrical stimulation to the quadriceps and hamstrings and a 12 week cycling phase. Physiological, morphological and biochemical parameters were measured for each subject, at the beginning of the programme and following each phase. Results showed that a programme of stimulation induced lower limb exercise increased the exercise tolerance of all patients, as determined by a progressive increase in exercise time, cycling rate and exercise load. The enhanced exercise tolerance was a result of increases in local muscle strength and endurance. Increases in thigh muscle area and joint range of motion were recorded and all incomplete subjects reported an improvement in functional capabilities and general wellbeing.

Adult↗
PubMed1989

Back injuries to fast bowlers in cricket: a prospective study.

Eighty-two high performance young male fast bowlers (mean age 16.8 years) were tested immediately prior to the season for selected kinanthropometric and physiological data. Subjects were also filmed both laterally (200 Hz) and from above (100 Hz) while bowling so that their front foot impacted a force platform during the delivery stride. The players then completed a log book over the ensuing season that detailed their training and playing programmes. All cricket related injuries over this season were assessed by a sports physician who used computerized tomography to assist in the diagnosis of spinal injuries. At the completion of this season the players were grouped according to their injury status (Group 1--bony injury to a vertebra; Group 2--soft tissue injury to the back that caused the player to miss at least one game, and Group 3--no injuries). A one-way analysis of variance was used to identify if any variables were significantly (P less than 0.05) different between the three groups, and a Scheffe post hoc comparison was used to determine which groups were significantly different. Eleven per cent of the players sustained a stress fracture to a vertebra(e) (L4 to S1), while 27 per cent sustained a soft tissue injury to the back. Bowlers with a low longitudinal foot arch were more likely to develop a stress fracture than those with a high arch. Shoulder depression and horizontal flexion strength for the preferred limb and quadriceps power in the non-preferred limb were also significantly related to back injuries. Results suggest that bowlers with the above physical characteristics, who bowl with these biomechanical techniques for extended periods, are predisposed to back injuries.

Adolescent↗